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oceanbase/src/sql/resolver/expr/ob_raw_expr_printer.cpp

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/**
* Copyright (c) 2021 OceanBase
* OceanBase CE is licensed under Mulan PubL v2.
* You can use this software according to the terms and conditions of the Mulan PubL v2.
* You may obtain a copy of Mulan PubL v2 at:
* http://license.coscl.org.cn/MulanPubL-2.0
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PubL v2 for more details.
*/
#define USING_LOG_PREFIX SQL
#include "sql/resolver/expr/ob_raw_expr_printer.h"
#include "lib/oblog/ob_log_module.h"
#include "sql/ob_select_stmt_printer.h"
#include "sql/engine/expr/ob_expr_column_conv.h"
#include "lib/string/ob_sql_string.h"
namespace oceanbase {
using namespace common;
namespace sql {
ObRawExprPrinter::ObRawExprPrinter()
: buf_(NULL),
buf_len_(0),
pos_(NULL),
scope_(T_NONE_SCOPE),
only_column_namespace_(false),
is_inited_(false),
tz_info_(NULL),
print_params_()
{}
ObRawExprPrinter::ObRawExprPrinter(char* buf, int64_t buf_len, int64_t* pos, ObObjPrintParams print_params)
: buf_(buf),
buf_len_(buf_len),
pos_(pos),
scope_(T_NONE_SCOPE),
only_column_namespace_(false),
is_inited_(true),
tz_info_(NULL),
print_params_(print_params)
{}
ObRawExprPrinter::~ObRawExprPrinter()
{}
void ObRawExprPrinter::init(char* buf, int64_t buf_len, int64_t* pos, ObObjPrintParams print_params)
{
buf_ = buf;
buf_len_ = buf_len;
pos_ = pos;
scope_ = T_NONE_SCOPE;
print_params_ = print_params;
is_inited_ = true;
}
int ObRawExprPrinter::do_print(ObRawExpr* expr, ObStmtScope scope, bool only_column_namespace)
{
int ret = OB_SUCCESS;
if (OB_UNLIKELY(!is_inited_)) {
ret = OB_NOT_INIT;
LOG_WARN("not inited!", K(ret));
} else if (OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr should not be NULL", K(ret));
} else {
scope_ = scope;
only_column_namespace_ = only_column_namespace;
PRINT_EXPR(expr);
// if (!expr->get_alias_column_name().empty() && T_FIELD_LIST_SCOPE == scope_) {
// const ObString &alias_name = expr->get_alias_column_name();
// DATA_PRINTF(" AS ");
// DATA_PRINTF("`%.*s`", LEN_AND_PTR(alias_name));
// }
}
return ret;
}
int ObRawExprPrinter::print(ObRawExpr* expr)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(buf_) || OB_ISNULL(pos_) || OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ is NULL of buf_ is NULL or pos_ is NULL or expr is NULL", K(ret));
} else if (!expr->get_alias_column_name().empty() && !expr->is_column_ref_expr() && !expr->is_aggr_expr() &&
!expr->is_pseudo_column_expr() && scope_ != T_DBLINK_SCOPE && scope_ != T_FIELD_LIST_SCOPE &&
scope_ != T_GROUP_SCOPE && scope_ != T_WHERE_SCOPE) {
// expr is a alias column ref
// alias column target list
DATA_PRINTF(lib::is_oracle_mode() ? "\"%.*s\"" : "`%.*s`", LEN_AND_PTR(expr->get_alias_column_name()));
} else if (scope_ == T_DBLINK_SCOPE && OB_NOT_NULL(expr->get_orig_expr())) {
if (OB_FAIL(print(expr->get_orig_expr()))) {
LOG_WARN("fail to print orig expr", K(ret));
}
} else {
switch (expr->get_expr_class()) {
case ObRawExpr::EXPR_CONST: {
ObConstRawExpr* con_expr = static_cast<ObConstRawExpr*>(expr);
PRINT_EXPR(con_expr);
break;
}
case ObRawExpr::EXPR_QUERY_REF: {
ObQueryRefRawExpr* una_expr = static_cast<ObQueryRefRawExpr*>(expr);
PRINT_EXPR(una_expr);
break;
}
case ObRawExpr::EXPR_COLUMN_REF: {
ObColumnRefRawExpr* bin_expr = static_cast<ObColumnRefRawExpr*>(expr);
PRINT_EXPR(bin_expr);
break;
}
case ObRawExpr::EXPR_OPERATOR: {
ObOpRawExpr* op_expr = static_cast<ObOpRawExpr*>(expr);
PRINT_EXPR(op_expr);
break;
}
case ObRawExpr::EXPR_CASE_OPERATOR: {
ObCaseOpRawExpr* case_expr = static_cast<ObCaseOpRawExpr*>(expr);
PRINT_EXPR(case_expr);
break;
}
case ObRawExpr::EXPR_AGGR: {
ObAggFunRawExpr* agg_expr = static_cast<ObAggFunRawExpr*>(expr);
PRINT_EXPR(agg_expr);
break;
}
case ObRawExpr::EXPR_SYS_FUNC: {
ObSysFunRawExpr* sys_expr = static_cast<ObSysFunRawExpr*>(expr);
PRINT_EXPR(sys_expr);
break;
}
case ObRawExpr::EXPR_UDF: {
ret = OB_NOT_SUPPORTED;
break;
}
case ObRawExpr::EXPR_WINDOW: {
ObWinFunRawExpr* win_expr = static_cast<ObWinFunRawExpr*>(expr);
PRINT_EXPR(win_expr);
break;
}
case ObRawExpr::EXPR_DOMAIN_INDEX: {
ObFunMatchAgainst* ma_expr = static_cast<ObFunMatchAgainst*>(expr);
PRINT_EXPR(ma_expr);
break;
}
case ObRawExpr::EXPR_PSEUDO_COLUMN: {
ObPseudoColumnRawExpr* pse_expr = static_cast<ObPseudoColumnRawExpr*>(expr);
PRINT_EXPR(pse_expr);
break;
}
case ObRawExpr::EXPR_SET_OP: {
ObSetOpRawExpr* set_op_expr = static_cast<ObSetOpRawExpr*>(expr);
PRINT_EXPR(set_op_expr);
break;
}
default: {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unknown expr class", K(ret), K(expr->get_expr_class()));
break;
}
}
}
return ret;
}
int ObRawExprPrinter::print(ObConstRawExpr* expr)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(buf_) || OB_ISNULL(pos_) || OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ is NULL of buf_ is NULL or pos_ is NULL or expr is NULL", K(ret));
} else if (T_DBLINK_SCOPE == scope_ && T_QUESTIONMARK == expr->get_expr_type()) {
if (OB_FAIL(ObLinkStmtParam::write(buf_, buf_len_, *pos_, expr->get_value().get_unknown()))) {
LOG_WARN("fail to write param to buf", K(ret));
}
} else if (expr->get_literal_prefix().empty()) {
// for empty string in Oracle mode , we should use char-type obj to print
if (expr->get_value().is_null() && ObCharType == expr->get_expr_obj_meta().get_type()) {
ObObj empty_string = expr->get_value();
empty_string.set_meta_type(expr->get_expr_obj_meta());
if (OB_FAIL(empty_string.print_sql_literal(buf_, buf_len_, *pos_, print_params_))) {
LOG_WARN("fail to print sql literal", K(ret));
}
} else if (OB_FAIL(expr->get_value().print_sql_literal(buf_, buf_len_, *pos_, print_params_))) {
LOG_WARN("fail to print sql literal", K(ret));
}
} else if (expr->get_literal_prefix() == LITERAL_PREFIX_DATE && expr->get_value().is_datetime()) {
int32_t tmp_date = 0;
if (OB_FAIL(databuff_printf(buf_, buf_len_, *pos_, "%s '", LITERAL_PREFIX_DATE))) {
LOG_WARN("fail to print literal prefix", K(ret));
} else if (OB_FAIL(ObTimeConverter::datetime_to_date(expr->get_value().get_datetime(), NULL, tmp_date))) {
LOG_WARN("fail to datetime_to_date", "datetime", expr->get_value().get_datetime(), K(ret));
} else if (OB_FAIL(ObTimeConverter::date_to_str(tmp_date, buf_, buf_len_, *pos_))) {
LOG_WARN("fail to date_to_str", K(tmp_date), K(ret));
} else if (OB_FAIL(databuff_printf(buf_, buf_len_, *pos_, "'"))) {
LOG_WARN("fail to print single quote", K(ret));
}
} else if (expr->get_literal_prefix().prefix_match_ci(ORACLE_LITERAL_PREFIX_INTERVAL) ||
(expr->get_value().is_oracle_decimal())) {
if (OB_FAIL(databuff_printf(
buf_, buf_len_, *pos_, "%.*s", expr->get_literal_prefix().length(), expr->get_literal_prefix().ptr()))) {
LOG_WARN("fail to print literal suffix", K(ret));
}
} else {
if (OB_FAIL(databuff_printf(buf_, buf_len_, *pos_, "%.*s ", LEN_AND_PTR(expr->get_literal_prefix())))) {
LOG_WARN("fail to print literal prefix", K(ret));
} else if (!expr->is_date_unit() &&
OB_FAIL(expr->get_value().print_sql_literal(buf_, buf_len_, *pos_, print_params_))) {
LOG_WARN("fail to print sql literal", K(ret));
}
}
return ret;
}
int ObRawExprPrinter::print(ObQueryRefRawExpr* expr)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(buf_) || OB_ISNULL(pos_) || OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ is NULL of buf_ is NULL or pos_ is NULL or expr is NULL", K(ret));
} else {
if (expr->is_cursor()) {
DATA_PRINTF("CURSOR");
}
if (OB_SUCC(ret)) {
ObStmt* stmt = expr->get_ref_stmt();
if (OB_ISNULL(stmt)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt is NULL", K(ret));
} else {
if (stmt->is_select_stmt()) {
ObIArray<ObString>* column_list = NULL;
bool is_set_subquery = false;
ObSelectStmtPrinter stmt_printer(
buf_, buf_len_, pos_, static_cast<ObSelectStmt*>(stmt), print_params_, column_list, is_set_subquery);
if (OB_FAIL(stmt_printer.do_print())) {
LOG_WARN("fail to print ref query", K(ret));
}
}
}
}
}
return ret;
}
int ObRawExprPrinter::print(ObColumnRefRawExpr* expr)
{
ObArenaAllocator allocator("PrintRefColumn");
int ret = OB_SUCCESS;
bool is_oracle_mode = lib::is_oracle_mode();
if (OB_ISNULL(buf_) || OB_ISNULL(pos_) || OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ is NULL of buf_ is NULL or pos_ is NULL or expr is NULL", K(ret));
} else if (expr->is_generated_column() && expr->is_hidden_column() && OB_NOT_NULL(expr->get_dependant_expr())) {
PRINT_EXPR(expr->get_dependant_expr());
} else {
ObArenaAllocator arena_alloc;
ObString col_name;
if (OB_FAIL(ObSQLUtils::generate_new_name_with_escape_character(
allocator, expr->get_column_name(), col_name, is_oracle_mode))) {
LOG_WARN("fail to generate new name with escape character", K(ret));
} else if (is_oracle_mode &&
OB_FAIL(ObSelectStmtPrinter::remove_double_quotation_for_string(col_name, arena_alloc))) {
LOG_WARN("failed to remove double quotation for string", K(ret));
} else if (OB_FAIL(ObCharset::charset_convert(
allocator, col_name, CS_TYPE_UTF8MB4_BIN, print_params_.cs_type_, col_name))) {
LOG_WARN("fail to convert charset", K(ret));
} else if (expr->is_cte_generated_column()) {
ObString table_name = expr->get_synonym_name().empty() ? expr->get_table_name() : expr->get_synonym_name();
// note: expr's table_name is equal to alias if table's alias is not empty,
CONVERT_CHARSET_FOR_RPINT(allocator, table_name);
DATA_PRINTF(
is_oracle_mode ? "\"%.*s\".\"%.*s\"" : "`%.*s`.`%.*s`", LEN_AND_PTR(table_name), LEN_AND_PTR(col_name));
} else if (OB_UNLIKELY(only_column_namespace_)) {
DATA_PRINTF(is_oracle_mode ? "\"%.*s\"" : "`%.*s`", LEN_AND_PTR(col_name));
} else if (expr->is_from_alias_table()) {
DATA_PRINTF(is_oracle_mode ? "\"%.*s\".\"%.*s\"" : "`%.*s`.`%.*s`",
LEN_AND_PTR(expr->get_table_name()), LEN_AND_PTR(col_name));
} else {
if (!expr->get_synonym_name().empty() && !expr->get_synonym_db_name().empty()) {
ObString synonyn_db_name = expr->get_synonym_db_name();
CONVERT_CHARSET_FOR_RPINT(allocator, synonyn_db_name);
DATA_PRINTF(is_oracle_mode ? "\"%.*s\"." : "`%.*s`.", LEN_AND_PTR(synonyn_db_name));
} else if (expr->get_database_name().length() > 0) {
ObString database_name = expr->get_database_name();
CONVERT_CHARSET_FOR_RPINT(allocator, database_name);
DATA_PRINTF(is_oracle_mode ? "\"%.*s\"." : "`%.*s`.", LEN_AND_PTR(database_name));
}
ObString table_name = expr->get_synonym_name().empty() ? expr->get_table_name() : expr->get_synonym_name();
CONVERT_CHARSET_FOR_RPINT(allocator, table_name);
// note: expr's table_name is equal to alias if table's alias is not empty,
if (!table_name.empty()) {
DATA_PRINTF(
is_oracle_mode ? "\"%.*s\".\"%.*s\"" : "`%.*s`.`%.*s`", LEN_AND_PTR(table_name), LEN_AND_PTR(col_name));
} else {
// oracle allow derived table without alias name, table_name is empty here.
// e.g.: select * from (select 1 from dual)
DATA_PRINTF(is_oracle_mode ? "\"%.*s\"" : "`%.*s`", LEN_AND_PTR(col_name));
}
}
}
return ret;
}
int ObRawExprPrinter::print(ObOpRawExpr* expr)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(buf_) || OB_ISNULL(pos_) || OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ is NULL of buf_ is NULL or pos_ is NULL or expr is NULL", K(ret));
} else {
ObString symbol("");
ObItemType type = expr->get_expr_type();
switch (type) {
case T_OP_PRIOR:
SET_SYMBOL_IF_EMPTY("prior");
case T_OP_CONNECT_BY_ROOT:
SET_SYMBOL_IF_EMPTY("connect_by_root");
case T_OP_NOT:
SET_SYMBOL_IF_EMPTY("not");
case T_OP_NOT_EXISTS:
SET_SYMBOL_IF_EMPTY("not exists");
case T_OP_EXISTS: {
SET_SYMBOL_IF_EMPTY("exists");
if (1 != expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr param count should be equal 1 ", K(ret), K(expr->get_param_count()));
} else {
DATA_PRINTF("%.*s", LEN_AND_PTR(symbol));
DATA_PRINTF("(");
PRINT_EXPR(expr->get_param_expr(0));
DATA_PRINTF(")");
}
break;
}
case T_OP_NEG: {
if (1 != expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr param count should be equal 1 ", K(ret), K(expr->get_param_count()));
} else {
DATA_PRINTF("-");
DATA_PRINTF("(");
PRINT_EXPR(expr->get_param_expr(0));
DATA_PRINTF(")");
}
break;
}
case T_OP_AND:
SET_SYMBOL_IF_EMPTY("and");
case T_OP_OR: {
SET_SYMBOL_IF_EMPTY("or");
if (expr->get_param_count() < 2) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr param count should be greater than or equal 2", K(ret), K(expr->get_param_count()));
} else {
DATA_PRINTF("(");
for (int64_t i = 0; OB_SUCC(ret) && i < expr->get_param_count(); ++i) {
PRINT_EXPR(expr->get_param_expr(i));
DATA_PRINTF(" %.*s ", LEN_AND_PTR(symbol));
}
if (OB_SUCC(ret)) {
*pos_ -= 2 + symbol.length();
DATA_PRINTF(")");
}
}
break;
}
case T_OP_ADD: // a op b
case T_OP_AGG_ADD:
SET_SYMBOL_IF_EMPTY("+");
case T_OP_MINUS:
case T_OP_AGG_MINUS:
SET_SYMBOL_IF_EMPTY("-");
case T_OP_MUL:
case T_OP_AGG_MUL:
SET_SYMBOL_IF_EMPTY("*");
case T_OP_DIV:
case T_OP_AGG_DIV:
SET_SYMBOL_IF_EMPTY("/");
case T_OP_POW:
SET_SYMBOL_IF_EMPTY("pow");
case T_OP_MOD:
if (lib::is_oracle_mode()) {
SET_SYMBOL_IF_EMPTY("mod");
} else {
SET_SYMBOL_IF_EMPTY("%");
}
case T_OP_INT_DIV:
SET_SYMBOL_IF_EMPTY("div");
case T_OP_LE:
case T_OP_SQ_LE: // subquery
SET_SYMBOL_IF_EMPTY("<=");
case T_OP_LT:
case T_OP_SQ_LT:
SET_SYMBOL_IF_EMPTY("<");
case T_OP_EQ:
case T_OP_SQ_EQ:
SET_SYMBOL_IF_EMPTY("=");
case T_OP_NSEQ:
case T_OP_SQ_NSEQ:
SET_SYMBOL_IF_EMPTY("<=>");
case T_OP_GE:
case T_OP_SQ_GE:
SET_SYMBOL_IF_EMPTY(">=");
case T_OP_GT:
case T_OP_SQ_GT:
SET_SYMBOL_IF_EMPTY(">");
case T_OP_BIT_LEFT_SHIFT:
SET_SYMBOL_IF_EMPTY("<<");
case T_OP_BIT_RIGHT_SHIFT:
SET_SYMBOL_IF_EMPTY(">>");
case T_OP_NE:
case T_OP_SQ_NE:
SET_SYMBOL_IF_EMPTY("<>");
case T_OP_IN: // in sub-query wille be rewrited as expr = ANY(sub-query)
SET_SYMBOL_IF_EMPTY("in");
case T_OP_NOT_IN:
SET_SYMBOL_IF_EMPTY("not in"); // not in sub-query wille be rewrited as expr != all(sub-query)
case T_OP_BIT_OR:
SET_SYMBOL_IF_EMPTY("|");
case T_OP_BIT_XOR:
case T_OP_XOR:
SET_SYMBOL_IF_EMPTY("^");
case T_OP_BIT_AND:
SET_SYMBOL_IF_EMPTY("&");
case T_OP_REGEXP: {
SET_SYMBOL_IF_EMPTY("regexp");
case T_OP_CNN:
SET_SYMBOL_IF_EMPTY("||");
// case T_OP_DATE_ADD: {
if (OB_UNLIKELY(2 != expr->get_param_count())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr param count should be equal 2", "count", expr->get_param_count(), K(ret));
} else {
if (T_OP_MOD == type && lib::is_oracle_mode()) {
DATA_PRINTF(" %.*s(", LEN_AND_PTR(symbol));
PRINT_EXPR(expr->get_param_expr(0));
DATA_PRINTF(", ");
PRINT_EXPR(expr->get_param_expr(1));
DATA_PRINTF(")");
} else {
DATA_PRINTF("(");
PRINT_EXPR(expr->get_param_expr(0));
DATA_PRINTF(" %.*s ", LEN_AND_PTR(symbol));
if (OB_SUCC(ret)) {
// any, all
if (T_WITH_ANY == expr->get_subquery_key()) {
DATA_PRINTF("any ");
} else if (T_WITH_ALL == expr->get_subquery_key()) {
DATA_PRINTF("all ");
}
}
PRINT_EXPR(expr->get_param_expr(1));
DATA_PRINTF(")");
}
}
break;
}
// is bool, is not bool, is null, is not null, isnull()
case T_OP_IS:
SET_SYMBOL_IF_EMPTY("is");
case T_OP_IS_NOT: {
SET_SYMBOL_IF_EMPTY("is not");
if (3 != expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr param count should be equal 3", K(ret), K(expr->get_param_count()));
} else {
DATA_PRINTF("(");
PRINT_EXPR(expr->get_param_expr(0));
DATA_PRINTF(" %.*s ", LEN_AND_PTR(symbol));
if (OB_SUCC(ret)) {
ObConstRawExpr* con_expr = static_cast<ObConstRawExpr*>(expr->get_param_expr(1));
if (OB_ISNULL(con_expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("con_expr should not be NULL", K(ret));
} else {
ObObj& obj = con_expr->get_value();
ObObjType type = obj.get_type();
if (ObNullType == type) {
DATA_PRINTF("null");
} else if (ObTinyIntType == type) {
DATA_PRINTF("%s", obj.get_bool() ? "true" : "false");
} else {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpected obj type", K(ret), K(type));
}
}
}
DATA_PRINTF(")");
}
break;
}
// between, not between
case T_OP_BTW:
SET_SYMBOL_IF_EMPTY("between");
case T_OP_NOT_BTW: {
SET_SYMBOL_IF_EMPTY("not between");
if (3 != expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr param count should be equal 3", K(ret), K(expr->get_param_count()));
} else {
DATA_PRINTF("(");
PRINT_EXPR(expr->get_param_expr(0));
DATA_PRINTF(" %.*s ", LEN_AND_PTR(symbol));
PRINT_EXPR(expr->get_param_expr(1));
DATA_PRINTF(" and ");
PRINT_EXPR(expr->get_param_expr(2));
DATA_PRINTF(")");
}
break;
}
// expr list
case T_OP_ROW: {
if (expr->get_param_count() < 1) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("param count should be greater than or equal 1", K(ret), K(expr->get_param_count()));
} else {
DATA_PRINTF("(");
for (int64_t i = 0; OB_SUCC(ret) && i < expr->get_param_count(); ++i) {
PRINT_EXPR(expr->get_param_expr(i));
DATA_PRINTF(",");
}
if (OB_SUCC(ret)) {
--*pos_;
DATA_PRINTF(")");
}
}
break;
}
case T_OP_LIKE:
SET_SYMBOL_IF_EMPTY("like");
case T_OP_NOT_LIKE: {
SET_SYMBOL_IF_EMPTY("not like");
if (3 != expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("param count should be equal 3", K(ret), K(expr->get_param_count()));
} else {
DATA_PRINTF("(");
PRINT_EXPR(expr->get_param_expr(0));
DATA_PRINTF(" %.*s ", LEN_AND_PTR(symbol));
PRINT_EXPR(expr->get_param_expr(1));
DATA_PRINTF(" escape ");
PRINT_EXPR(expr->get_param_expr(2));
DATA_PRINTF(")");
}
break;
}
case T_OBJ_ACCESS_REF: {
ret = OB_NOT_SUPPORTED;
break;
}
case T_FUN_PL_ASSOCIATIVE_INDEX: {
ret = OB_NOT_SUPPORTED;
break;
}
case T_FUN_PL_INTEGER_CHECKER: {
ret = OB_NOT_SUPPORTED;
break;
}
case T_OP_ASSIGN: {
SET_SYMBOL_IF_EMPTY(":=");
if (OB_UNLIKELY(2 != expr->get_param_count())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("param count should be equal 2", K(ret), K(expr->get_param_count()));
} else {
DATA_PRINTF("(");
if (OB_ISNULL(expr->get_param_expr(0)) || !expr->get_param_expr(0)->is_const_expr() ||
!static_cast<ObConstRawExpr*>(expr->get_param_expr(0))->get_value().is_varchar()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("invalid user variable name", K(ret), K(expr->get_param_expr(0)));
} else {
ObString func_name = static_cast<ObConstRawExpr*>(expr->get_param_expr(0))->get_value().get_varchar();
DATA_PRINTF("@");
DATA_PRINTF("%.*s", LEN_AND_PTR(func_name));
DATA_PRINTF("%.*s", LEN_AND_PTR(symbol));
PRINT_EXPR(expr->get_param_expr(1));
}
DATA_PRINTF(")");
}
break;
}
case T_OP_MULTISET: {
SET_SYMBOL_IF_EMPTY("MULTISET");
break;
}
case T_OP_BOOL:
case T_FUN_SYS_REMOVE_CONST: {
if (expr->has_flag(IS_INNER_ADDED_EXPR)) {
// ignore print inner added expr
CK(1 == expr->get_param_count());
PRINT_EXPR(expr->get_param_expr(0));
} else {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("bool expr have to be inner expr for now", K(ret), K(*expr));
}
break;
}
case T_OP_COLL_PRED: {
SET_SYMBOL_IF_EMPTY("collection predicate");
break;
}
case T_FUN_PL_GET_CURSOR_ATTR: {
ret = OB_NOT_SUPPORTED;
break;
}
default: {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unknown expr type", K(ret), "type", get_type_name(type));
break;
}
} // end switch
}
return ret;
}
int ObRawExprPrinter::print(ObSetOpRawExpr* expr)
{
if (OB_ISNULL(expr)) {
LOG_WARN("expr is NULL", K(expr));
} else {
LOG_WARN("set op expr must be alias", K(*expr));
}
return OB_ERR_UNEXPECTED;
}
int ObRawExprPrinter::print(ObCaseOpRawExpr* expr)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(buf_) || OB_ISNULL(pos_) || OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ is NULL of buf_ is NULL or pos_ is NULL or expr is NULL", K(ret));
} else {
DATA_PRINTF("(case");
if (OB_SUCC(ret)) {
ObRawExpr* arg_expr = expr->get_arg_param_expr();
if (NULL != arg_expr) {
DATA_PRINTF(" ");
PRINT_EXPR(arg_expr);
}
for (int64_t i = 0; OB_SUCC(ret) && i < expr->get_when_expr_size(); ++i) {
DATA_PRINTF(" when ");
PRINT_EXPR(expr->get_when_param_expr(i));
DATA_PRINTF(" then ");
PRINT_EXPR(expr->get_then_param_expr(i));
}
DATA_PRINTF(" else");
if (OB_SUCC(ret)) {
ObRawExpr* default_expr = expr->get_default_param_expr();
if (NULL != default_expr) {
DATA_PRINTF(" ");
PRINT_EXPR(default_expr);
}
}
DATA_PRINTF(" end)");
}
}
return ret;
}
int ObRawExprPrinter::print(ObAggFunRawExpr* expr)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(buf_) || OB_ISNULL(pos_) || OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ is NULL of buf_ is NULL or pos_ is NULL or expr is NULL", K(ret));
} else {
ObString symbol("");
ObItemType type = expr->get_expr_type();
switch (type) {
case T_FUN_COUNT:
SET_SYMBOL_IF_EMPTY("count");
case T_FUN_MAX:
SET_SYMBOL_IF_EMPTY("max");
case T_FUN_MIN:
SET_SYMBOL_IF_EMPTY("min");
case T_FUN_SUM:
SET_SYMBOL_IF_EMPTY("sum");
case T_FUN_MEDIAN:
SET_SYMBOL_IF_EMPTY("median");
case T_FUN_APPROX_COUNT_DISTINCT:
SET_SYMBOL_IF_EMPTY("approx_count_distinct");
case T_FUN_GROUPING:
SET_SYMBOL_IF_EMPTY("grouping");
case T_FUN_VARIANCE:
SET_SYMBOL_IF_EMPTY("variance");
case T_FUN_STDDEV:
SET_SYMBOL_IF_EMPTY("stddev");
case T_FUN_CORR:
SET_SYMBOL_IF_EMPTY("corr");
case T_FUN_COVAR_POP:
SET_SYMBOL_IF_EMPTY("covar_pop");
case T_FUN_COVAR_SAMP:
SET_SYMBOL_IF_EMPTY("covar_samp");
case T_FUN_VAR_POP:
SET_SYMBOL_IF_EMPTY("var_pop");
case T_FUN_VAR_SAMP:
SET_SYMBOL_IF_EMPTY("var_samp");
case T_FUN_REGR_SLOPE:
SET_SYMBOL_IF_EMPTY("regr_slope");
case T_FUN_REGR_INTERCEPT:
SET_SYMBOL_IF_EMPTY("regr_intercept");
case T_FUN_REGR_COUNT:
SET_SYMBOL_IF_EMPTY("regr_count");
case T_FUN_REGR_R2:
SET_SYMBOL_IF_EMPTY("regr_r2");
case T_FUN_REGR_AVGX:
SET_SYMBOL_IF_EMPTY("regr_avgx");
case T_FUN_REGR_AVGY:
SET_SYMBOL_IF_EMPTY("regr_avgy");
case T_FUN_REGR_SXX:
SET_SYMBOL_IF_EMPTY("regr_sxx");
case T_FUN_REGR_SYY:
SET_SYMBOL_IF_EMPTY("regr_syy");
case T_FUN_REGR_SXY:
SET_SYMBOL_IF_EMPTY("regr_sxy");
case T_FUN_AVG:
SET_SYMBOL_IF_EMPTY("avg");
case T_FUN_STDDEV_POP:
SET_SYMBOL_IF_EMPTY("stddev_pop");
case T_FUN_STDDEV_SAMP:
SET_SYMBOL_IF_EMPTY("stddev_samp");
case T_FUN_WM_CONCAT: {
SET_SYMBOL_IF_EMPTY("wm_concat");
DATA_PRINTF("%.*s(", LEN_AND_PTR(symbol));
// distinct, default 'all', not print
if (OB_SUCC(ret)) {
if (expr->is_param_distinct()) {
DATA_PRINTF("distinct ");
}
}
if (OB_SUCC(ret)) {
if (0 == expr->get_param_count()) {
if (T_FUN_COUNT != type) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr type should be T_FUN_COUNT ", K(ret), K(type));
} else {
// count(*) -> count(0)
DATA_PRINTF("0");
}
} else if (T_FUN_MEDIAN == type) {
// median add an order_item_expr when resolve, here not need to do this
PRINT_EXPR(expr->get_param_expr(0));
} else {
for (int64_t i = 0; OB_SUCC(ret) && i < expr->get_param_count(); ++i) {
PRINT_EXPR(expr->get_param_expr(i));
DATA_PRINTF(",");
}
if (OB_SUCC(ret)) {
--*pos_;
}
}
}
DATA_PRINTF(")");
break;
}
case T_FUN_GROUP_RANK:
SET_SYMBOL_IF_EMPTY("rank");
case T_FUN_GROUP_DENSE_RANK:
SET_SYMBOL_IF_EMPTY("dense_rank");
case T_FUN_GROUP_PERCENT_RANK:
SET_SYMBOL_IF_EMPTY("percent_rank");
case T_FUN_GROUP_CUME_DIST:
SET_SYMBOL_IF_EMPTY("cume_dist");
case T_FUN_GROUP_PERCENTILE_CONT:
SET_SYMBOL_IF_EMPTY("percentile_cont");
case T_FUN_GROUP_PERCENTILE_DISC:
SET_SYMBOL_IF_EMPTY("percentile_disc");
case T_FUN_GROUP_CONCAT: {
// mysql: group_concat(distinct c1,c2+1 order by c1 desc separator ',')
// oracle: listagg(c1,',') within group(order by c1);
if (share::is_oracle_mode()) {
SET_SYMBOL_IF_EMPTY("listagg");
} else {
SET_SYMBOL_IF_EMPTY("group_concat");
}
DATA_PRINTF("%.*s(", LEN_AND_PTR(symbol));
// distinct
if (OB_SUCC(ret)) {
if (expr->is_param_distinct()) {
DATA_PRINTF("distinct ");
}
}
// expr list
for (int64_t i = 0; OB_SUCC(ret) && i < expr->get_real_param_count(); ++i) {
PRINT_EXPR(expr->get_real_param_exprs().at(i));
DATA_PRINTF(",");
}
if (OB_SUCC(ret)) {
--*pos_;
}
if (share::is_oracle_mode() && type == T_FUN_GROUP_CONCAT && 0 == expr->get_order_items().count()) {
/* do nothing */
} else {
if (share::is_oracle_mode()) {
DATA_PRINTF(") within group (");
}
// order by
if (OB_SUCC(ret)) {
const ObIArray<OrderItem>& order_items = expr->get_order_items();
int64_t order_item_size = order_items.count();
if (order_item_size > 0) {
DATA_PRINTF(" order by ");
for (int64_t i = 0; OB_SUCC(ret) && i < order_item_size; ++i) {
const OrderItem& order_item = order_items.at(i);
PRINT_EXPR(order_item.expr_);
if (OB_SUCC(ret)) {
if (share::is_mysql_mode()) {
if (is_descending_direction(order_item.order_type_)) {
DATA_PRINTF(" desc ");
}
} else if (order_item.order_type_ == NULLS_FIRST_ASC) {
DATA_PRINTF(" asc nulls first ");
} else if (order_item.order_type_ == NULLS_LAST_ASC) { // use default value
/*do nothing*/
} else if (order_item.order_type_ == NULLS_FIRST_DESC) { // use default value
DATA_PRINTF(" desc ");
} else if (order_item.order_type_ == NULLS_LAST_DESC) {
DATA_PRINTF(" desc nulls last ");
} else { /*do nothing*/
}
}
DATA_PRINTF(",");
}
if (OB_SUCC(ret)) {
--*pos_;
}
}
}
// separator
if (OB_SUCC(ret)) {
if (expr->get_separator_param_expr()) {
DATA_PRINTF(" separator ");
PRINT_EXPR(expr->get_separator_param_expr());
}
}
}
DATA_PRINTF(")");
break;
}
case T_FUN_KEEP_MAX:
SET_SYMBOL_IF_EMPTY("max");
case T_FUN_KEEP_MIN:
SET_SYMBOL_IF_EMPTY("min");
case T_FUN_KEEP_SUM:
SET_SYMBOL_IF_EMPTY("sum");
case T_FUN_KEEP_COUNT:
SET_SYMBOL_IF_EMPTY("count");
case T_FUN_KEEP_AVG:
SET_SYMBOL_IF_EMPTY("avg");
case T_FUN_KEEP_STDDEV:
SET_SYMBOL_IF_EMPTY("stddev");
case T_FUN_KEEP_VARIANCE:
SET_SYMBOL_IF_EMPTY("variance");
case T_FUN_KEEP_WM_CONCAT: {
SET_SYMBOL_IF_EMPTY("wm_concat");
DATA_PRINTF("%.*s(", LEN_AND_PTR(symbol));
if (0 == expr->get_real_param_count()) { // count(*) keep(...)
if (T_FUN_KEEP_COUNT != type) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr type should be T_FUN_KEEP_COUNT ", K(ret), K(type));
} else {
DATA_PRINTF("*");
}
} else if (OB_UNLIKELY(T_FUN_KEEP_WM_CONCAT != type && 1 != expr->get_real_param_count())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected error", K(ret), K(type));
} else {
PRINT_EXPR(expr->get_real_param_exprs().at(0));
}
if (OB_SUCC(ret)) {
DATA_PRINTF(")");
const ObIArray<OrderItem>& order_items = expr->get_order_items();
if (order_items.count() > 0) {
DATA_PRINTF("keep(dense_rank first order by ");
for (int64_t i = 0; OB_SUCC(ret) && i < order_items.count(); ++i) {
const OrderItem& order_item = order_items.at(i);
PRINT_EXPR(order_item.expr_);
if (OB_SUCC(ret)) {
if (share::is_mysql_mode()) {
if (is_descending_direction(order_item.order_type_)) {
DATA_PRINTF(" desc ");
}
} else if (order_item.order_type_ == NULLS_FIRST_ASC) {
DATA_PRINTF(" asc nulls first ");
} else if (order_item.order_type_ == NULLS_LAST_ASC) { // use default value
/*do nothing*/
} else if (order_item.order_type_ == NULLS_FIRST_DESC) { // use default value
DATA_PRINTF(" desc ");
} else if (order_item.order_type_ == NULLS_LAST_DESC) {
DATA_PRINTF(" desc nulls last ");
} else { /*do nothing*/
}
}
DATA_PRINTF(",");
}
if (OB_SUCC(ret)) {
--*pos_;
DATA_PRINTF(")");
}
}
}
break;
}
default: {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unknown expr type", K(ret), K(type));
break;
}
} // end switch
}
return ret;
}
int ObRawExprPrinter::print(ObSysFunRawExpr* expr)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(buf_) || OB_ISNULL(pos_) || OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ is NULL of buf_ is NULL or pos_ is NULL or expr is NULL", K(ret));
} else {
ObString func_name = expr->get_func_name();
switch (expr->get_expr_type()) {
case T_FUN_SYS_UTC_TIMESTAMP:
case T_FUN_SYS_UTC_TIME: {
const int16_t scale = static_cast<int16_t>(expr->get_result_type().get_scale());
if (scale > 0) {
DATA_PRINTF("%.*s(%d)", LEN_AND_PTR(func_name), scale);
} else {
DATA_PRINTF("%.*s()", LEN_AND_PTR(func_name));
}
break;
}
case T_FUN_SYS_CAST: {
if (2 != expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("param count should be equal 2", K(ret), K(expr->get_param_count()));
} else if (expr->has_flag(IS_INNER_ADDED_EXPR)) {
PRINT_EXPR(expr->get_param_expr(0));
} else {
DATA_PRINTF("cast(");
PRINT_EXPR(expr->get_param_expr(0));
DATA_PRINTF(" as ");
if (OB_SUCC(ret)) {
if (OB_FAIL(print_cast_type(expr->get_param_expr(1)))) {
LOG_WARN("fail to print cast_type", K(ret));
}
}
DATA_PRINTF(")");
}
break;
}
case T_FUN_SYS_SET_COLLATION: {
ObConstRawExpr* coll_expr = NULL;
if (2 != expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("param count should be 2", K(expr->get_param_count()));
} else if (OB_ISNULL(coll_expr = static_cast<ObConstRawExpr*>(expr->get_param_expr(1))) ||
!coll_expr->is_const_expr()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("coll_expr is invalid", "coll_expr", PC(coll_expr));
} else if (!static_cast<ObConstRawExpr*>(coll_expr)->get_value().is_int()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("collation value isn't int value");
} else {
ObString collation_name;
ObCollationType cs_type = static_cast<ObCollationType>(coll_expr->get_value().get_int());
PRINT_EXPR(expr->get_param_expr(0));
DATA_PRINTF(" collate ");
if (OB_SUCC(ret) && OB_FAIL(ObCharset::collation_name(cs_type, collation_name))) {
LOG_WARN("get collation name failed", K(cs_type));
}
DATA_PRINTF("%.*s", LEN_AND_PTR(collation_name));
}
break;
}
case T_FUN_SYS_CONVERT: {
if (2 != expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("param count should be equal 2", K(ret), K(expr->get_param_count()));
} else {
DATA_PRINTF("convert(");
PRINT_EXPR(expr->get_param_expr(0));
DATA_PRINTF(" using ");
PRINT_EXPR(expr->get_param_expr(1));
DATA_PRINTF(")");
}
break;
}
case T_FUN_SYS_DATE_ADD:
case T_FUN_SYS_DATE_SUB: {
if (3 != expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("param count should be equal 3", K(ret), K(expr->get_param_count()));
} else {
DATA_PRINTF("(");
// expr1
PRINT_EXPR(expr->get_param_expr(0));
// '+' or '-'
if (OB_SUCC(ret)) {
if (ObString("date_add") == func_name) {
DATA_PRINTF(" + ");
} else {
DATA_PRINTF(" - ");
}
}
DATA_PRINTF("interval ");
// expr2
PRINT_EXPR(expr->get_param_expr(1));
DATA_PRINTF(" ");
if (OB_SUCC(ret)) {
if (OB_FAIL(print_date_unit(expr->get_param_expr(2)))) {
LOG_WARN("fail to print date unit", K(ret));
}
}
DATA_PRINTF(")");
}
break;
}
case T_FUN_SYS_TIME_STAMP_DIFF: {
if (3 != expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("param count should be equal 3", K(ret), K(expr->get_param_count()));
} else {
DATA_PRINTF("timestampdiff(");
// date_unit
if (OB_SUCC(ret)) {
if (OB_FAIL(print_date_unit(expr->get_param_expr(0)))) {
LOG_WARN("fail to print date unit", K(ret));
}
}
DATA_PRINTF(",");
// expr1
PRINT_EXPR(expr->get_param_expr(1));
DATA_PRINTF(",");
// expr2
PRINT_EXPR(expr->get_param_expr(2));
DATA_PRINTF(")");
}
break;
}
case T_FUN_SYS_EXTRACT: {
if (2 != expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("param count should be equal 2", K(ret), K(expr->get_param_count()));
} else {
DATA_PRINTF("extract(");
// date_unit
if (OB_SUCC(ret)) {
if (OB_FAIL(print_date_unit(expr->get_param_expr(0)))) {
LOG_WARN("fail to print date unit", K(ret));
}
}
DATA_PRINTF(" from ");
PRINT_EXPR(expr->get_param_expr(1));
DATA_PRINTF(")");
}
break;
}
case T_FUN_SYS_TRIM: {
int64_t param_num = expr->get_param_count();
if (param_num > 3 || param_num <= 0) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("invalid param count", K(ret), K(expr->get_param_count()));
} else {
DATA_PRINTF("trim(");
if (1 == param_num) {
PRINT_EXPR(expr->get_param_expr(0));
} else if (2 == param_num || 3 == param_num) {
if (OB_SUCC(ret)) {
// type
int64_t default_type = -1;
ObConstRawExpr* con_expr = static_cast<ObConstRawExpr*>(expr->get_param_expr(0));
if (OB_ISNULL(con_expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("con_expr should not be NULL", K(ret));
} else {
con_expr->get_value().get_int(default_type);
if (0 == default_type) {
DATA_PRINTF("both ");
} else if (1 == default_type) {
DATA_PRINTF("leading ");
} else if (2 == default_type) {
DATA_PRINTF("trailing ");
} else {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unknown default type", K(ret), K(default_type));
}
}
if (OB_SUCC(ret)) {
if (2 == param_num) {
DATA_PRINTF(" from ");
// expr
PRINT_EXPR(expr->get_param_expr(1));
} else if (3 == param_num) {
// default_operand
PRINT_EXPR(expr->get_param_expr(1));
DATA_PRINTF(" from ");
// expr
PRINT_EXPR(expr->get_param_expr(2));
}
}
}
} // end 2 || 3
DATA_PRINTF(")");
}
break;
}
case T_OP_GET_USER_VAR: {
int64_t param_num = expr->get_param_count();
if (1 != param_num || OB_ISNULL(expr->get_param_expr(0))) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("invalid param count", K(ret), K(expr->get_param_count()), K(expr->get_param_expr(0)));
} else if (!expr->get_param_expr(0)->is_const_expr() ||
!static_cast<ObConstRawExpr*>(expr->get_param_expr(0))->get_value().is_varchar()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("invalid user variable name", K(ret), K(*expr->get_param_expr(0)));
} else {
DATA_PRINTF("@");
func_name = static_cast<ObConstRawExpr*>(expr->get_param_expr(0))->get_value().get_varchar();
DATA_PRINTF("%.*s", LEN_AND_PTR(func_name));
}
break;
}
case T_FUN_COLUMN_CONV: {
int64_t param_num = expr->get_param_count();
if ((param_num != ObExprColumnConv::PARAMS_COUNT_WITH_COLUMN_INFO &&
param_num != ObExprColumnConv::PARAMS_COUNT_WITHOUT_COLUMN_INFO) ||
OB_ISNULL(expr->get_param_expr(4))) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("invalid param count", K(ret), K(expr->get_param_count()), K(expr->get_param_expr(4)));
} else {
PRINT_EXPR(expr->get_param_expr(4));
}
break;
}
case T_OP_GET_SUBPROGRAM_VAR: // fallthrough
case T_OP_GET_PACKAGE_VAR: {
DATA_PRINTF("?");
break;
}
case T_FUN_SYS_SYSDATE: // fallthrough
case T_FUN_SYS_UID:
case T_FUN_SYS_SESSIONTIMEZONE:
case T_FUN_SYS_DBTIMEZONE:
case T_FUN_SYS_ROWNUM:
case T_FUN_SYS_USER: {
DATA_PRINTF("%.*s", LEN_AND_PTR(expr->get_func_name()));
if (share::is_mysql_mode()) {
DATA_PRINTF("()");
}
break;
}
case T_FUN_SYS_CUR_DATE: {
if (share::is_oracle_mode()) {
DATA_PRINTF(N_CURRENT_DATE);
} else {
DATA_PRINTF("curdate()");
}
break;
}
case T_FUN_SYS_CUR_TIMESTAMP:
// now(), current_timestamp(), local_time(), local_timestamp()
if (share::is_oracle_mode()) {
func_name = "current_timestamp";
} else {
DATA_PRINTF("now(");
if (OB_SUCC(ret) && expr->get_param_count() > 0) {
// accuracy
if (1 != expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("param count should be equal 1", K(ret), K(expr->get_param_count()));
} else {
PRINT_EXPR(expr->get_param_expr(0));
}
}
DATA_PRINTF(")");
break;
}
case T_FUN_SYS_SYSTIMESTAMP:
case T_FUN_SYS_LOCALTIMESTAMP: {
DATA_PRINTF("%.*s", LEN_AND_PTR(func_name));
if (OB_SUCC(ret) && expr->get_param_count() > 0) {
// accuracy
if (1 != expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("param count should be equal 1", K(ret), K(expr->get_param_count()));
} else {
PRINT_EXPR(expr->get_param_expr(0));
}
DATA_PRINTF(")");
}
break;
}
case T_FUN_SYS_SEQ_NEXTVAL: {
ObSequenceRawExpr* seq_expr = static_cast<ObSequenceRawExpr*>(expr);
if (1 != seq_expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("param count should be equal 1", K(ret), K(seq_expr->get_param_count()));
} else if (!seq_expr->get_name().empty() && !seq_expr->get_action().empty()) {
DATA_PRINTF("%.*s.%.*s", LEN_AND_PTR(seq_expr->get_name()), LEN_AND_PTR(seq_expr->get_action()));
} else {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("sequence should sepcify format as seqname.action", K(ret));
}
break;
}
case T_FUN_PL_SQLCODE_SQLERRM: {
ObPLSQLCodeSQLErrmRawExpr* sql_expr = static_cast<ObPLSQLCodeSQLErrmRawExpr*>(expr);
if (sql_expr->get_is_sqlcode()) {
DATA_PRINTF("SQLCODE");
} else {
DATA_PRINTF("SQLERRM");
if (1 == sql_expr->get_param_exprs().count()) {
DATA_PRINTF("(");
PRINT_EXPR(sql_expr->get_param_exprs().at(0));
DATA_PRINTF(")");
}
}
break;
}
case T_FUN_PL_COLLECTION_CONSTRUCT: {
ret = OB_NOT_SUPPORTED;
break;
}
case T_FUN_PL_OBJECT_CONSTRUCT: {
ret = OB_NOT_SUPPORTED;
}
case T_FUN_SYS_DEFAULT: {
DATA_PRINTF("default");
break;
}
case T_FUN_SYS_LNNVL: {
DATA_PRINTF("(%.*s", LEN_AND_PTR(func_name));
if (1 != expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("param count should be equal 1", K(ret), K(expr->get_param_count()));
} else {
PRINT_EXPR(expr->get_param_expr(0));
DATA_PRINTF(")");
}
break;
}
case T_FUN_SYS_TRANSLATE: {
if (2 == expr->get_param_count()) {
ObRawExpr* first_param = expr->get_param_expr(0);
ObRawExpr* second_param = expr->get_param_expr(1);
DATA_PRINTF("translate(");
PRINT_EXPR(first_param);
if (OB_ISNULL(second_param) || OB_UNLIKELY(ObRawExpr::EXPR_CONST != second_param->get_expr_class())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("second param of translate is null or not const", K(ret), KPC(second_param));
} else {
ObConstRawExpr* const_param = static_cast<ObConstRawExpr*>(second_param);
int64_t char_cs;
if (OB_FAIL(const_param->get_value().get_int(char_cs))) {
LOG_WARN("expect int value", K(ret), K(const_param->get_value()));
} else if (0 == char_cs) {
DATA_PRINTF(" using char_cs)");
} else if (OB_LIKELY(1 == char_cs)) {
DATA_PRINTF(" using nchar_cs)");
} else {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expect 0 or 1 for second param", K(ret), K(char_cs));
}
}
} else {
DATA_PRINTF("%.*s(", LEN_AND_PTR(func_name));
if (OB_SUCC(ret)) {
int64_t i = 0;
for (; OB_SUCC(ret) && i < expr->get_param_count(); ++i) {
PRINT_EXPR(expr->get_param_expr(i));
DATA_PRINTF(",");
}
if (OB_SUCC(ret)) {
if (i > 0) {
--*pos_;
}
DATA_PRINTF(")");
}
}
}
break;
}
case T_FUN_SYS_POSITION: {
DATA_PRINTF("%.*s", LEN_AND_PTR(func_name));
if (2 != expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("param count should be equal 2", K(ret), K(expr->get_param_count()));
} else {
DATA_PRINTF("(");
PRINT_EXPR(expr->get_param_expr(0));
DATA_PRINTF(" in ");
PRINT_EXPR(expr->get_param_expr(1));
DATA_PRINTF(")");
}
break;
}
case T_FUN_SYS_CHAR: {
DATA_PRINTF("%.*s(", LEN_AND_PTR(func_name));
if (OB_SUCC(ret)) {
if (expr->get_param_count() < 2) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("param count should be great or equ 2", K(ret), K(expr->get_param_count()));
} else {
int64_t i = 0;
for (; OB_SUCC(ret) && i < expr->get_param_count() - 1; ++i) {
PRINT_EXPR(expr->get_param_expr(i));
DATA_PRINTF(",");
}
if (OB_SUCC(ret)) {
--*pos_;
DATA_PRINTF(" using ");
PRINT_EXPR(expr->get_param_expr(expr->get_param_count() - 1));
DATA_PRINTF(")");
}
}
}
break;
}
case T_FUN_SYS_GET_FORMAT: {
if (2 != expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("param count should be equal 2", K(ret), K(expr->get_param_count()));
} else {
DATA_PRINTF("get_format(");
// temporal_unit
if (OB_SUCC(ret)) {
if (OB_FAIL(print_get_format_unit(expr->get_param_expr(0)))) {
LOG_WARN("fail to print date unit", K(ret));
}
}
DATA_PRINTF(", ");
PRINT_EXPR(expr->get_param_expr(1));
DATA_PRINTF(")");
}
break;
}
default: {
// substr
// date, month
// cur_date, current_date, cur_time, current_time
// func_name
if (T_FUN_SYS_ORA_DECODE == expr->get_expr_type()) {
// The same function is named decode under Oracle and ora_decode under MySQL
// Ensure that SQL reverse spelling will not go wrong
if (share::is_oracle_mode()) {
func_name = "decode";
} else {
func_name = "ora_decode";
}
}
if (T_FUN_UDF == expr->get_expr_type()) {
DATA_PRINTF(share::is_oracle_mode() ? "\"%.*s\"(" : "`%.*s`(", LEN_AND_PTR(func_name));
} else {
DATA_PRINTF("%.*s(", LEN_AND_PTR(func_name));
}
if (OB_SUCC(ret)) {
int64_t i = 0;
for (; OB_SUCC(ret) && i < expr->get_param_count(); ++i) {
PRINT_EXPR(expr->get_param_expr(i));
DATA_PRINTF(",");
}
if (OB_SUCC(ret)) {
if (i > 0) {
--*pos_;
}
DATA_PRINTF(")");
}
}
break;
}
}
}
return ret;
}
int ObRawExprPrinter::print(ObWinFunRawExpr* expr)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(buf_) || OB_ISNULL(pos_) || OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ is NULL of buf_ is NULL or pos_ is NULL or expr is NULL", K(ret));
} else {
ObString symbol("");
ObItemType type = expr->get_func_type();
switch (type) {
case T_WIN_FUN_ROW_NUMBER:
SET_SYMBOL_IF_EMPTY("row_number");
case T_WIN_FUN_RANK:
SET_SYMBOL_IF_EMPTY("rank");
case T_WIN_FUN_DENSE_RANK:
SET_SYMBOL_IF_EMPTY("dense_rank");
case T_WIN_FUN_PERCENT_RANK: {
SET_SYMBOL_IF_EMPTY("percent_rank");
DATA_PRINTF("%.*s(", LEN_AND_PTR(symbol));
DATA_PRINTF(")");
DATA_PRINTF(" over(");
if (OB_FAIL(print_partition_exprs(expr))) {
LOG_WARN("failed to print partition exprs.", K(ret));
} else if (OB_FAIL(print_order_items(expr))) {
LOG_WARN("failed to print order items.", K(ret));
} else { /* do nothing. */
}
DATA_PRINTF(")");
break;
}
case T_FUN_MAX:
SET_SYMBOL_IF_EMPTY("max");
case T_FUN_SUM:
SET_SYMBOL_IF_EMPTY("sum");
case T_FUN_MIN:
SET_SYMBOL_IF_EMPTY("min");
case T_FUN_COUNT:
SET_SYMBOL_IF_EMPTY("count");
case T_FUN_AVG:
SET_SYMBOL_IF_EMPTY("avg");
case T_FUN_CORR:
SET_SYMBOL_IF_EMPTY("corr");
case T_FUN_COVAR_POP:
SET_SYMBOL_IF_EMPTY("covar_pop");
case T_FUN_COVAR_SAMP:
SET_SYMBOL_IF_EMPTY("covar_samp");
case T_FUN_VAR_POP:
SET_SYMBOL_IF_EMPTY("var_pop");
case T_FUN_VAR_SAMP:
SET_SYMBOL_IF_EMPTY("var_samp");
case T_FUN_REGR_SLOPE:
SET_SYMBOL_IF_EMPTY("regr_slope");
case T_FUN_REGR_INTERCEPT:
SET_SYMBOL_IF_EMPTY("regr_intercept");
case T_FUN_REGR_COUNT:
SET_SYMBOL_IF_EMPTY("regr_count");
case T_FUN_REGR_R2:
SET_SYMBOL_IF_EMPTY("regr_r2");
case T_FUN_REGR_AVGX:
SET_SYMBOL_IF_EMPTY("regr_avgx");
case T_FUN_REGR_AVGY:
SET_SYMBOL_IF_EMPTY("regr_avgy");
case T_FUN_REGR_SXX:
SET_SYMBOL_IF_EMPTY("regr_sxx");
case T_FUN_REGR_SYY:
SET_SYMBOL_IF_EMPTY("regr_syy");
case T_FUN_REGR_SXY:
SET_SYMBOL_IF_EMPTY("regr_sxy");
case T_FUN_VARIANCE:
SET_SYMBOL_IF_EMPTY("variance");
case T_FUN_STDDEV:
SET_SYMBOL_IF_EMPTY("stddev");
case T_FUN_STDDEV_POP:
SET_SYMBOL_IF_EMPTY("stddev_pop");
case T_FUN_STDDEV_SAMP:
SET_SYMBOL_IF_EMPTY("stddev_samp");
case T_FUN_WM_CONCAT: {
SET_SYMBOL_IF_EMPTY("wm_concat");
DATA_PRINTF("%.*s(", LEN_AND_PTR(symbol));
// distinct, default 'all', not print
if (OB_SUCC(ret)) {
if (expr->is_distinct()) {
DATA_PRINTF("distinct ");
}
}
if (OB_SUCC(ret)) {
int64_t N = expr->get_agg_expr()->get_param_count();
if (0 == N) {
if (T_FUN_COUNT != type) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr type should be T_FUN_COUNT ", K(ret), K(type));
} else {
DATA_PRINTF("0");
}
} else {
for (int64_t i = 0; OB_SUCC(ret) && i < N; ++i) {
PRINT_EXPR(expr->get_agg_expr()->get_param_expr(i));
DATA_PRINTF(",");
}
if (OB_SUCC(ret)) {
--*pos_;
}
}
}
DATA_PRINTF(")");
DATA_PRINTF(" over(");
if (OB_FAIL(print_partition_exprs(expr))) {
LOG_WARN("failed to print partition exprs.", K(ret));
} else if (OB_FAIL(print_order_items(expr))) {
LOG_WARN("failed to print order items.", K(ret));
} else if (OB_FAIL(print_window_clause(expr))) {
LOG_WARN("failed to print window clause.", K(ret));
} else { /* do nothing. */
}
DATA_PRINTF(")");
break;
}
case T_WIN_FUN_NTILE: {
SET_SYMBOL_IF_EMPTY("ntile");
DATA_PRINTF("%.*s(", LEN_AND_PTR(symbol));
if (OB_SUCC(ret)) {
if (0 == expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr type should be T_FUN_COUNT ", K(ret), K(type));
} else {
int64_t N = expr->get_func_params().count();
for (int64_t i = 0; OB_SUCC(ret) && i < N; ++i) {
PRINT_EXPR(expr->get_func_params().at(i));
}
}
}
DATA_PRINTF(")");
DATA_PRINTF(" over(");
if (OB_FAIL(print_partition_exprs(expr))) {
LOG_WARN("failed to print partition exprs.", K(ret));
} else if (OB_FAIL(print_order_items(expr))) {
LOG_WARN("failed to print order items.", K(ret));
} else { /* do nothing. */
}
DATA_PRINTF(")");
break;
}
case T_WIN_FUN_CUME_DIST: {
SET_SYMBOL_IF_EMPTY("cume_dist");
DATA_PRINTF("%.*s(", LEN_AND_PTR(symbol));
DATA_PRINTF(")");
DATA_PRINTF(" over(");
if (OB_FAIL(print_partition_exprs(expr))) {
LOG_WARN("failed to print partition exprs.", K(ret));
} else if (OB_FAIL(print_order_items(expr))) {
LOG_WARN("failed to print order items.", K(ret));
} else { /* do nothing. */
}
DATA_PRINTF(")");
break;
}
case T_WIN_FUN_LEAD:
SET_SYMBOL_IF_EMPTY("lead");
case T_WIN_FUN_LAG: {
SET_SYMBOL_IF_EMPTY("lag");
DATA_PRINTF("%.*s(", LEN_AND_PTR(symbol));
if (OB_SUCC(ret)) {
if (0 == expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr count should not be 0 ", K(ret), K(type));
} else {
int64_t N = expr->get_func_params().count();
for (int64_t i = 0; OB_SUCC(ret) && i < N; ++i) {
PRINT_EXPR(expr->get_func_params().at(i));
DATA_PRINTF(",");
}
if (OB_SUCC(ret)) {
--*pos_;
}
}
}
if (OB_FAIL(ret)) {
if (expr->is_ignore_null()) {
DATA_PRINTF(" ignore nulls");
} else {
DATA_PRINTF(" respect nulls");
}
}
DATA_PRINTF(")");
DATA_PRINTF(" over(");
if (OB_FAIL(print_partition_exprs(expr))) {
LOG_WARN("failed to print partition exprs.", K(ret));
} else if (OB_FAIL(print_order_items(expr))) {
LOG_WARN("failed to print order items.", K(ret));
} else { /* do nothing. */
}
DATA_PRINTF(")");
break;
}
case T_WIN_FUN_RATIO_TO_REPORT: {
SET_SYMBOL_IF_EMPTY("ratio_to_report");
DATA_PRINTF("%.*s(", LEN_AND_PTR(symbol));
if (OB_SUCC(ret)) {
if (0 == expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr count should not be 0 ", K(ret), K(type));
} else {
int64_t N = expr->get_func_params().count();
for (int64_t i = 0; OB_SUCC(ret) && i < N; ++i) {
PRINT_EXPR(expr->get_func_params().at(i));
DATA_PRINTF(",");
}
if (OB_SUCC(ret)) {
--*pos_;
}
}
}
DATA_PRINTF(")");
DATA_PRINTF(" over(");
if (OB_FAIL(print_partition_exprs(expr))) {
LOG_WARN("failed to print partition exprs.", K(ret));
} else { /* do nothing. */
}
DATA_PRINTF(")");
break;
}
case T_WIN_FUN_FIRST_VALUE:
SET_SYMBOL_IF_EMPTY("first_value");
case T_WIN_FUN_LAST_VALUE:
SET_SYMBOL_IF_EMPTY("last_value");
case T_WIN_FUN_NTH_VALUE: {
SET_SYMBOL_IF_EMPTY("nth_value");
DATA_PRINTF("%.*s(", LEN_AND_PTR(symbol));
if (OB_SUCC(ret)) {
if (0 == expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr count should not be 0 ", K(ret), K(type));
} else {
int64_t N = expr->get_func_params().count();
for (int64_t i = 0; OB_SUCC(ret) && i < N; ++i) {
PRINT_EXPR(expr->get_func_params().at(i));
DATA_PRINTF(",");
}
if (OB_SUCC(ret)) {
--*pos_;
}
}
}
DATA_PRINTF(")");
if (OB_SUCC(ret)) {
if (expr->is_from_first()) {
DATA_PRINTF(" from first");
} else {
DATA_PRINTF(" from last");
}
if (expr->is_ignore_null()) {
DATA_PRINTF(" ignore nulls");
} else {
DATA_PRINTF(" respect nulls");
}
}
DATA_PRINTF(" over(");
if (OB_FAIL(print_partition_exprs(expr))) {
LOG_WARN("failed to print partition exprs.", K(ret));
} else if (OB_FAIL(print_order_items(expr))) {
LOG_WARN("failed to print order items.", K(ret));
} else if (OB_FAIL(print_window_clause(expr))) {
LOG_WARN("failed to print window clause.", K(ret));
} else { /* do nothing. */
}
DATA_PRINTF(")");
break;
}
case T_FUN_GROUP_CONCAT: {
// mysql: group_concat(distinct c1,c2+1 order by c1 desc separator ',')
// oracle: listagg(c1,',') within group(order by c1);
if (share::is_oracle_mode()) {
SET_SYMBOL_IF_EMPTY("listagg");
} else {
SET_SYMBOL_IF_EMPTY("group_concat");
}
DATA_PRINTF("%.*s(", LEN_AND_PTR(symbol));
// distinct
if (OB_SUCC(ret)) {
if (expr->is_distinct()) {
DATA_PRINTF("distinct ");
}
}
// expr list
for (int64_t i = 0; OB_SUCC(ret) && i < expr->get_agg_expr()->get_real_param_count(); ++i) {
PRINT_EXPR(expr->get_agg_expr()->get_real_param_exprs().at(i));
DATA_PRINTF(",");
}
if (OB_SUCC(ret)) {
--*pos_;
}
if (share::is_oracle_mode() && 0 == expr->get_order_items().count()) {
/* do nothing */
} else if (share::is_oracle_mode()) {
DATA_PRINTF(") within group (");
// order by
if (OB_SUCC(ret)) {
const ObIArray<OrderItem>& order_items = expr->get_agg_expr()->get_order_items();
int64_t order_item_size = order_items.count();
if (order_item_size > 0) {
DATA_PRINTF(" order by ");
for (int64_t i = 0; OB_SUCC(ret) && i < order_item_size; ++i) {
const OrderItem& order_item = order_items.at(i);
PRINT_EXPR(order_item.expr_);
if (OB_SUCC(ret)) {
if (share::is_mysql_mode()) {
if (is_descending_direction(order_item.order_type_)) {
DATA_PRINTF(" desc ");
}
} else if (order_item.order_type_ == NULLS_FIRST_ASC) {
DATA_PRINTF(" asc nulls first ");
} else if (order_item.order_type_ == NULLS_LAST_ASC) { // use default value
/*do nothing*/
} else if (order_item.order_type_ == NULLS_FIRST_DESC) { // use default value
DATA_PRINTF(" desc ");
} else if (order_item.order_type_ == NULLS_LAST_DESC) {
DATA_PRINTF(" desc nulls last ");
} else { /*do nothing*/
}
}
DATA_PRINTF(",");
}
if (OB_SUCC(ret)) {
--*pos_;
}
}
}
}
// separator
if (OB_SUCC(ret)) {
if (expr->get_agg_expr()->get_separator_param_expr()) {
DATA_PRINTF(" separator ");
PRINT_EXPR(expr->get_agg_expr()->get_separator_param_expr());
}
}
DATA_PRINTF(")");
if (OB_SUCC(ret)) {
DATA_PRINTF(" over(");
if (OB_FAIL(print_partition_exprs(expr))) {
LOG_WARN("failed to print partition exprs.", K(ret));
} else if (OB_FAIL(print_order_items(expr))) {
LOG_WARN("failed to print order items.", K(ret));
} else if (OB_FAIL(print_window_clause(expr))) {
LOG_WARN("failed to print window clause.", K(ret));
} else {
DATA_PRINTF(")");
}
}
break;
}
case T_FUN_KEEP_MAX:
SET_SYMBOL_IF_EMPTY("max");
case T_FUN_KEEP_MIN:
SET_SYMBOL_IF_EMPTY("min");
case T_FUN_KEEP_SUM:
SET_SYMBOL_IF_EMPTY("sum");
case T_FUN_KEEP_COUNT:
SET_SYMBOL_IF_EMPTY("count");
case T_FUN_KEEP_AVG:
SET_SYMBOL_IF_EMPTY("avg");
case T_FUN_KEEP_STDDEV:
SET_SYMBOL_IF_EMPTY("stddev");
case T_FUN_KEEP_VARIANCE:
SET_SYMBOL_IF_EMPTY("variance");
case T_FUN_KEEP_WM_CONCAT: {
SET_SYMBOL_IF_EMPTY("wm_concat");
DATA_PRINTF("%.*s(", LEN_AND_PTR(symbol));
if (0 == expr->get_agg_expr()->get_real_param_count()) { // count(*) keep(...)
if (T_FUN_KEEP_COUNT != type) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr type should be T_FUN_KEEP_COUNT ", K(ret), K(type));
} else {
DATA_PRINTF("*");
}
} else if (OB_UNLIKELY(T_FUN_KEEP_WM_CONCAT != type && 1 != expr->get_agg_expr()->get_real_param_count())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected error", K(ret), K(type));
} else {
PRINT_EXPR(expr->get_agg_expr()->get_real_param_exprs().at(0));
}
if (OB_SUCC(ret)) {
DATA_PRINTF(")");
const ObIArray<OrderItem>& order_items = expr->get_agg_expr()->get_order_items();
if (order_items.count() > 0) {
DATA_PRINTF("keep(dense_rank first order by ");
for (int64_t i = 0; OB_SUCC(ret) && i < order_items.count(); ++i) {
const OrderItem& order_item = order_items.at(i);
if (OB_ISNULL(order_item.expr_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(ret));
} else {
PRINT_EXPR(order_item.expr_);
if (OB_SUCC(ret)) {
if (share::is_mysql_mode()) {
if (is_descending_direction(order_item.order_type_)) {
DATA_PRINTF(" desc ");
}
} else if (order_item.order_type_ == NULLS_FIRST_ASC) {
DATA_PRINTF(" asc nulls first ");
} else if (order_item.order_type_ == NULLS_LAST_ASC) { // use default value
/*do nothing*/
} else if (order_item.order_type_ == NULLS_FIRST_DESC) { // use default value
DATA_PRINTF(" desc ");
} else if (order_item.order_type_ == NULLS_LAST_DESC) {
DATA_PRINTF(" desc nulls last ");
} else { /*do nothing*/
}
}
}
DATA_PRINTF(",");
}
if (OB_SUCC(ret)) {
--*pos_;
DATA_PRINTF(")");
}
}
if (OB_SUCC(ret)) {
DATA_PRINTF(" over(");
if (OB_FAIL(print_partition_exprs(expr))) {
LOG_WARN("failed to print partition exprs.", K(ret));
} else if (OB_FAIL(print_order_items(expr))) {
LOG_WARN("failed to print order items.", K(ret));
} else if (OB_FAIL(print_window_clause(expr))) {
LOG_WARN("failed to print window clause.", K(ret));
} else {
DATA_PRINTF(")");
}
}
}
break;
}
case T_FUN_MEDIAN:
SET_SYMBOL_IF_EMPTY("median");
case T_FUN_GROUP_PERCENTILE_DISC:
SET_SYMBOL_IF_EMPTY("percentile_disc");
case T_FUN_GROUP_PERCENTILE_CONT: {
SET_SYMBOL_IF_EMPTY("percentile_cont");
if (OB_UNLIKELY(1 != expr->get_agg_expr()->get_real_param_count()) ||
OB_UNLIKELY(1 != expr->get_agg_expr()->get_order_items().count())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected error", K(ret), K(type));
} else {
DATA_PRINTF("%.*s(", LEN_AND_PTR(symbol));
PRINT_EXPR(expr->get_agg_expr()->get_param_expr(0));
DATA_PRINTF(")");
if (OB_UNLIKELY(T_FUN_MEDIAN != type)) {
DATA_PRINTF(" within group ( order by ");
const OrderItem& order_item = expr->get_agg_expr()->get_order_items().at(0);
PRINT_EXPR(order_item.expr_);
if (OB_SUCC(ret) && is_descending_direction(order_item.order_type_)) {
DATA_PRINTF(" desc ");
}
DATA_PRINTF(")");
}
}
DATA_PRINTF(" over(");
if (OB_FAIL(print_partition_exprs(expr))) {
LOG_WARN("failed to print partition exprs.", K(ret));
} else { /* do nothing. */
}
DATA_PRINTF(")");
break;
}
default: {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unknown expr type", K(ret), K(type));
break;
}
}
}
return ret;
}
int ObRawExprPrinter::print(ObFunMatchAgainst* expr)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(buf_) || OB_ISNULL(pos_) || OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ is NULL of buf_ is NULL or pos_ is NULL or expr is NULL", K(ret));
} else {
DATA_PRINTF("MATCH(");
if (OB_ISNULL(expr->get_match_columns())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("match columns is NULL", K(ret));
} else {
int64_t i = 0;
for (; OB_SUCC(ret) && i < expr->get_match_columns()->get_param_count(); ++i) {
ObRawExpr* column_ref = expr->get_match_columns()->get_param_expr(i);
if (OB_ISNULL(column_ref)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("match columns is NULL", K(ret));
} else {
PRINT_EXPR(column_ref);
DATA_PRINTF(",");
}
}
if (OB_SUCC(ret)) {
if (i > 0) {
--*pos_;
}
DATA_PRINTF(") AGAINST(");
}
if (OB_SUCC(ret)) {
PRINT_EXPR(expr->get_search_key());
if (NATURAL_LANGUAGE_MODE == expr->get_mode_flag()) {
DATA_PRINTF(" IN NATURAL LANGUAGE MODE)");
} else {
DATA_PRINTF(" IN BOOLEAN MODE)");
}
}
}
}
return ret;
}
int ObRawExprPrinter::print(ObPseudoColumnRawExpr* expr)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(buf_) || OB_ISNULL(pos_) || OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ is NULL of buf_ is NULL or pos_ is NULL or expr is NULL", K(ret));
} else {
ObString symbol("");
ObItemType type = expr->get_expr_type();
switch (type) {
case T_LEVEL:
SET_SYMBOL_IF_EMPTY("level");
case T_CONNECT_BY_ISCYCLE:
SET_SYMBOL_IF_EMPTY("connect_by_iscycle");
case T_CONNECT_BY_ISLEAF: {
SET_SYMBOL_IF_EMPTY("connect_by_isleaf");
if (0 != expr->get_param_count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr param count should be 0", K(ret), K(expr->get_param_count()));
} else {
DATA_PRINTF("%.*s", LEN_AND_PTR(symbol));
}
break;
}
default: {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpected pseudo column type", K(type));
}
}
}
return ret;
}
int ObRawExprPrinter::print_partition_exprs(ObWinFunRawExpr* expr)
{
int ret = OB_SUCCESS;
int64_t N = expr->get_partition_exprs().count();
if (N == 0) { /* do nothing. */
} else if (N > 0) {
DATA_PRINTF(" PARTITION BY ");
for (int64_t i = 0; OB_SUCC(ret) && i < N; ++i) {
if (OB_ISNULL(expr->get_partition_exprs().at(i))) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("failed to get partiton by exprs.", K(ret));
} else {
PRINT_EXPR(expr->get_partition_exprs().at(i));
if (i < N - 1) {
DATA_PRINTF(", ");
} else { /* Do nothing */
}
}
}
} else { /* do nothing. */
}
return ret;
}
int ObRawExprPrinter::print_order_items(ObWinFunRawExpr* expr)
{
int ret = OB_SUCCESS;
int64_t N = expr->get_order_items().count();
if (N == 0) { /* do nothing. */
} else if (N > 0) {
DATA_PRINTF(" ORDER BY ");
for (int64_t i = 0; OB_SUCC(ret) && i < N; ++i) {
if (OB_ISNULL(expr->get_order_items().at(i).expr_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("failed to get order items exprs.", K(ret));
} else {
PRINT_EXPR(expr->get_order_items().at(i).expr_);
ObOrderDirection order_type = expr->get_order_items().at(i).order_type_;
if (lib::is_oracle_mode()) {
if (ObOrderDirection::NULLS_FIRST_ASC == order_type) {
DATA_PRINTF(" ASC NULLS FIRST ");
} else if (ObOrderDirection::NULLS_FIRST_DESC == order_type) {
DATA_PRINTF(" DESC NULLS FIRST ");
} else if (ObOrderDirection::NULLS_LAST_ASC == order_type) {
DATA_PRINTF(" ASC NULLS LAST ");
} else if (ObOrderDirection::NULLS_LAST_DESC == order_type) {
DATA_PRINTF(" DESC NULLS LAST ");
} else { /* do nothing. */
}
} else {
if (is_ascending_direction(order_type)) {
DATA_PRINTF(" ASC ");
} else if (is_descending_direction(order_type)) {
DATA_PRINTF(" DESC ");
} else { /* do nothing. */
}
}
}
if (i < N - 1) {
DATA_PRINTF(", ");
} else { /* Do nothing */
}
}
}
return ret;
}
int ObRawExprPrinter::print_window_clause(ObWinFunRawExpr* expr)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(buf_) || OB_ISNULL(pos_) || OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ is NULL of buf_ is NULL or pos_ is NULL or expr is NULL", K(ret));
} else if (ObRawExpr::EXPR_WINDOW != expr->get_expr_class()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpected expr type.", K(ret));
} else if (expr->get_order_items().empty()) {
// do nothing.
} else {
if (WindowType::WINDOW_MAX == expr->get_window_type()) {
// do nothing.
} else if (WindowType::WINDOW_ROWS == expr->get_window_type()) {
DATA_PRINTF(" ROWS");
} else if (WindowType::WINDOW_RANGE == expr->get_window_type()) {
DATA_PRINTF(" RANGE");
} else {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpected expr type.", K(ret));
}
if (OB_FAIL(ret)) {
} else if (expr->is_between()) {
DATA_PRINTF(" BETWEEN ");
if (BoundType::BOUND_UNBOUNDED == expr->get_upper().type_) {
DATA_PRINTF(" UNBOUNDED ");
if (expr->get_upper().is_preceding_) {
DATA_PRINTF(" PRECEDING ");
} else {
DATA_PRINTF(" FOLLOWING ");
}
} else if (BoundType::BOUND_CURRENT_ROW == expr->get_upper().type_) {
DATA_PRINTF(" CURRENT ROW ");
} else if (BoundType::BOUND_INTERVAL == expr->get_upper().type_) {
PRINT_EXPR(expr->get_upper().interval_expr_);
if (expr->get_upper().is_preceding_) {
DATA_PRINTF(" PRECEDING ");
} else {
DATA_PRINTF(" FOLLOWING ");
}
} else { /* do nothing. */
}
DATA_PRINTF(" AND ");
if (BoundType::BOUND_UNBOUNDED == expr->get_lower().type_) {
DATA_PRINTF(" UNBOUNDED ");
if (expr->get_lower().is_preceding_) {
DATA_PRINTF(" PRECEDING ");
} else {
DATA_PRINTF(" FOLLOWING ");
}
} else if (BoundType::BOUND_CURRENT_ROW == expr->get_lower().type_) {
DATA_PRINTF(" CURRENT ROW ");
} else if (BoundType::BOUND_INTERVAL == expr->get_lower().type_) {
PRINT_EXPR(expr->get_lower().interval_expr_);
if (expr->get_lower().is_preceding_) {
DATA_PRINTF(" PRECEDING ");
} else {
DATA_PRINTF(" FOLLOWING ");
}
} else { /* do nothing. */
}
}
}
return ret;
}
int ObRawExprPrinter::print_date_unit(ObRawExpr* expr)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(buf_) || OB_ISNULL(pos_) || OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ is NULL of buf_ is NULL or pos_ is NULL or expr is NULL", K(ret));
} else {
if (ObRawExpr::EXPR_CONST != expr->get_expr_class()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr class should be EXPR_CONST", K(ret), K(expr->get_expr_class()));
} else {
int64_t date_unit_type = DATE_UNIT_MAX;
ObConstRawExpr* con_expr = static_cast<ObConstRawExpr*>(expr);
if (OB_ISNULL(con_expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("con_expr should not be NULL", K(ret));
} else {
con_expr->get_value().get_int(date_unit_type);
DATA_PRINTF(ob_date_unit_type_str(static_cast<ObDateUnitType>(date_unit_type)));
}
}
}
return ret;
}
int ObRawExprPrinter::print_get_format_unit(ObRawExpr *expr)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(buf_) || OB_ISNULL(pos_) || OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ is NULL of buf_ is NULL or pos_ is NULL or expr is NULL", K(ret));
} else {
if (ObRawExpr::EXPR_CONST != expr->get_expr_class()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr class should be EXPR_CONST", K(ret), K(expr->get_expr_class()));
} else {
int64_t get_format_type = GET_FORMAT_MAX;
ObConstRawExpr *con_expr = static_cast<ObConstRawExpr*>(expr);
if (OB_ISNULL(con_expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("con_expr should not be NULL", K(ret));
} else {
con_expr->get_value().get_int(get_format_type);
DATA_PRINTF("%s", ob_get_format_unit_type_str(static_cast<ObGetFormatUnitType>(get_format_type)));
}
}
}
return ret;
}
// 1. ob not support cast(expr as char charset xxx)
int ObRawExprPrinter::print_cast_type(ObRawExpr* expr)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(buf_) || OB_ISNULL(pos_) || OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ is NULL of buf_ is NULL or pos_ is NULL or expr is NULL", K(ret));
} else if (ObRawExpr::EXPR_CONST != expr->get_expr_class()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr class should be EXPR_CONST ", K(ret), K(expr->get_expr_class()));
} else {
ObConstRawExpr* con_expr = static_cast<ObConstRawExpr*>(expr);
const ObLengthSemantics length_semantics = con_expr->get_accuracy().get_length_semantics();
const ObScale scale = con_expr->get_accuracy().get_scale();
ParseNode parse_node;
if (OB_FAIL(con_expr->get_value().get_int(parse_node.value_))) {
LOG_WARN("get int value failed", K(ret));
} else {
int16_t cast_type = parse_node.int16_values_[OB_NODE_CAST_TYPE_IDX];
switch (cast_type) {
case T_CHAR: {
// ob not support cast(expr as char charset xxx)
#if 0
int16_t collation = parse_node.int16_values_[OB_NODE_CAST_COLL_IDX];
int32_t len = parse_node.int32_values_[OB_NODE_CAST_C_LEN_IDX];
DATA_PRINTF("char");
DATA_PRINTF("(%d) ", len);
DATA_PRINTF("charset ");
if (OB_SUCC(ret)) {
if (BINARY_COLLATION == collation) {
// BINARY
DATA_PRINTF("binary");
} else {
// CHARACTER
DATA_PRINTF("utf8mb4");
}
}
#else
int16_t collation = parse_node.int16_values_[OB_NODE_CAST_COLL_IDX];
int32_t len = parse_node.int32_values_[OB_NODE_CAST_C_LEN_IDX];
if (BINARY_COLLATION == collation) {
// BINARY
if (len >= 0) {
DATA_PRINTF("binary(%d)", len);
} else {
DATA_PRINTF("binary");
}
} else {
// CHARACTER
if (share::is_oracle_mode()) {
DATA_PRINTF("char(%d %s)", len, get_length_semantics_str(length_semantics));
} else {
if (len > 0) {
DATA_PRINTF("character(%d)", len);
} else {
DATA_PRINTF("character");
}
}
}
#endif
break;
}
case T_VARCHAR: {
int16_t collation = parse_node.int16_values_[OB_NODE_CAST_COLL_IDX];
int32_t len = parse_node.int32_values_[OB_NODE_CAST_C_LEN_IDX];
if (BINARY_COLLATION == collation) {
// BINARY
if (share::is_oracle_mode()) {
DATA_PRINTF("varbinary(%d)", len);
} else {
if (len >= 0) {
DATA_PRINTF("binary(%d)", len);
} else {
DATA_PRINTF("binary");
}
}
} else {
// CHARACTER
if (share::is_oracle_mode()) {
DATA_PRINTF("varchar2(%d %s)", len, get_length_semantics_str(length_semantics));
} else {
if (len > 0) {
DATA_PRINTF("varchar(%d)", len);
} else {
DATA_PRINTF("character");
LOG_WARN("varchar's length is zero, use character instead", K(len));
}
}
}
break;
}
case T_NVARCHAR2: {
DATA_PRINTF("nvarchar2(%d)", parse_node.int32_values_[OB_NODE_CAST_C_LEN_IDX]);
break;
}
case T_NCHAR: {
DATA_PRINTF("nchar(%d)", parse_node.int32_values_[OB_NODE_CAST_C_LEN_IDX]);
break;
}
case T_DATETIME: {
// oracle mode treate date as datetime
const char* type_str = lib::is_oracle_mode() ? "date" : "datetime";
DATA_PRINTF(type_str);
break;
}
case T_DATE: {
DATA_PRINTF("date");
break;
}
case T_TIME: {
DATA_PRINTF("time");
break;
}
case T_NUMBER: {
int16_t precision = parse_node.int16_values_[OB_NODE_CAST_N_PREC_IDX];
int16_t scale = parse_node.int16_values_[OB_NODE_CAST_N_SCALE_IDX];
DATA_PRINTF("number(%d,%d)", precision, scale);
break;
}
case T_NUMBER_FLOAT: {
int16_t precision = parse_node.int16_values_[OB_NODE_CAST_N_PREC_IDX];
DATA_PRINTF("float(%d)", precision);
break;
}
case T_TINYINT:
case T_SMALLINT:
case T_MEDIUMINT:
case T_INT32:
case T_INT: {
DATA_PRINTF("signed");
break;
}
case T_UTINYINT:
case T_USMALLINT:
case T_UMEDIUMINT:
case T_UINT32:
case T_UINT64: {
DATA_PRINTF("unsigned");
break;
}
case T_INTERVAL_YM: {
int year_scale = ObIntervalScaleUtil::ob_scale_to_interval_ym_year_scale(static_cast<int8_t>(scale));
DATA_PRINTF("interval year(%d) to month", year_scale);
break;
}
case T_INTERVAL_DS: {
int day_scale = ObIntervalScaleUtil::ob_scale_to_interval_ds_day_scale(static_cast<int8_t>(scale));
int fs_scale = ObIntervalScaleUtil::ob_scale_to_interval_ds_second_scale(static_cast<int8_t>(scale));
DATA_PRINTF("interval day(%d) to second(%d)", day_scale, fs_scale);
break;
}
case T_TIMESTAMP_TZ: {
DATA_PRINTF("timestamp with time zone");
break;
}
case T_TIMESTAMP_LTZ: {
DATA_PRINTF("timestamp with local time zone");
break;
}
case T_TIMESTAMP_NANO: {
DATA_PRINTF("timestamp");
break;
}
case T_RAW: {
int32_t len = parse_node.int32_values_[OB_NODE_CAST_C_LEN_IDX];
DATA_PRINTF("raw(%d)", len);
break;
}
case T_FLOAT: {
const char* type_str = lib::is_oracle_mode() ? "binary_float" : "float";
DATA_PRINTF(type_str);
break;
}
case T_DOUBLE: {
const char* type_str = lib::is_oracle_mode() ? "binary_double" : "double";
DATA_PRINTF(type_str);
break;
}
case T_UROWID: {
DATA_PRINTF("urowid(%d)", parse_node.int32_values_[OB_NODE_CAST_C_LEN_IDX]);
break;
}
case T_LOB: {
int16_t collation = parse_node.int16_values_[OB_NODE_CAST_COLL_IDX];
if (BINARY_COLLATION == collation) {
DATA_PRINTF("blob");
} else {
DATA_PRINTF("clob");
}
break;
}
default: {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unknown cast type", K(ret), K(cast_type));
break;
}
} // end switch
}
}
return ret;
}
} // end of namespace sql
} // end of namespace oceanbase
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