473 lines
16 KiB
C++
473 lines
16 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#define USING_LOG_PREFIX SQL_EXE
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#include "ob_expr_week_of_func.h"
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#include "lib/timezone/ob_time_convert.h"
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#include "share/object/ob_obj_cast.h"
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#include "ob_expr_extract.h"
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#include "share/ob_time_utility2.h"
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#include "sql/session/ob_sql_session_info.h"
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#include "sql/engine/ob_exec_context.h"
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#include "sql/engine/expr/ob_datum_cast.h"
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using namespace oceanbase::share;
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using namespace oceanbase::sql;
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namespace oceanbase
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{
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namespace sql
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{
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ObExprWeekOfYear::ObExprWeekOfYear(ObIAllocator& alloc)
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: ObFuncExprOperator(alloc,
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T_FUN_SYS_WEEK_OF_YEAR,
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N_WEEK_OF_YEAR,
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1, NOT_VALID_FOR_GENERATED_COL, NOT_ROW_DIMENSION)
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{
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}
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ObExprWeekOfYear::~ObExprWeekOfYear() {}
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int ObExprWeekOfYear::cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const
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{
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UNUSED(op_cg_ctx);
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UNUSED(raw_expr);
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int ret = OB_SUCCESS;
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if (rt_expr.arg_cnt_ != 1) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("weekofyear expr should have one param", K(ret), K(rt_expr.arg_cnt_));
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} else if (OB_ISNULL(rt_expr.args_) || OB_ISNULL(rt_expr.args_[0])) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("children of weekofyear expr is null", K(ret), K(rt_expr.args_));
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} else {
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rt_expr.eval_func_ = ObExprWeekOfYear::calc_weekofyear;
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}
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return ret;
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}
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int ObExprWeekOfYear::calc_weekofyear(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum)
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{
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int ret = OB_SUCCESS;
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ObDatum *param_datum = NULL;
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int64_t week = 0;
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ObTime ot;
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ObDateSqlMode date_sql_mode;
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const ObSQLSessionInfo *session = NULL;
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if (OB_ISNULL(session = ctx.exec_ctx_.get_my_session())) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("session is null", K(ret));
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} else if (OB_FAIL(expr.args_[0]->eval(ctx, param_datum))) {
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LOG_WARN("eval param value failed");
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} else if (OB_UNLIKELY(param_datum->is_null())) {
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expr_datum.set_null();
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} else if (FALSE_IT(date_sql_mode.init(session->get_sql_mode()))) {
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} else if (OB_FAIL(ob_datum_to_ob_time_with_date(
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*param_datum, expr.args_[0]->datum_meta_.type_, get_timezone_info(session),
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ot, get_cur_time(ctx.exec_ctx_.get_physical_plan_ctx()), false, date_sql_mode,
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expr.args_[0]->obj_meta_.has_lob_header()))) {
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LOG_WARN("cast to ob time failed", K(ret));
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uint64_t cast_mode = 0;
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ObSQLUtils::get_default_cast_mode(session->get_stmt_type(), session, cast_mode);
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if (CM_IS_WARN_ON_FAIL(cast_mode)) {
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ret = OB_SUCCESS;
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}
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expr_datum.set_null();
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} else if (ot.parts_[DT_YEAR] <= 0) {
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expr_datum.set_null();
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} else {
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week = ObTimeConverter::ob_time_to_week(ot, DT_WEEK_GE_4_BEGIN);
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expr_datum.set_int(week);
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}
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return ret;
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}
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int ObExprWeekOfYear::is_valid_for_generated_column(const ObRawExpr*expr, const common::ObIArray<ObRawExpr *> &exprs, bool &is_valid) const {
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int ret = OB_SUCCESS;
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if (OB_FAIL(check_first_param_not_time(exprs, is_valid))) {
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LOG_WARN("fail to check if first param is time", K(ret), K(exprs));
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}
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return ret;
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}
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ObExprWeekDay::ObExprWeekDay(ObIAllocator& alloc)
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: ObFuncExprOperator(alloc,
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T_FUN_SYS_WEEKDAY_OF_DATE,
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N_WEEKDAY_OF_DATE,
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1, NOT_VALID_FOR_GENERATED_COL, NOT_ROW_DIMENSION)
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{
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}
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ObExprWeekDay::~ObExprWeekDay() {}
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int ObExprWeekDay::cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const
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{
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UNUSED(op_cg_ctx);
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UNUSED(raw_expr);
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int ret = OB_SUCCESS;
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if (rt_expr.arg_cnt_ != 1) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("weekday expr should have one param", K(ret), K(rt_expr.arg_cnt_));
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} else if (OB_ISNULL(rt_expr.args_) || OB_ISNULL(rt_expr.args_[0])) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("children of weekday expr is null", K(ret), K(rt_expr.args_));
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} else {
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rt_expr.eval_func_ = ObExprWeekDay::calc_weekday;
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}
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return ret;
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}
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int ObExprWeekDay::calc_weekday(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum)
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{
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int ret = OB_SUCCESS;
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ObDatum *param_datum = NULL;
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ObTime ot;
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ObDateSqlMode date_sql_mode;
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const ObSQLSessionInfo *session = NULL;
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if (OB_ISNULL(session = ctx.exec_ctx_.get_my_session())) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("session is null", K(ret));
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} else if (OB_FAIL(expr.args_[0]->eval(ctx, param_datum))) {
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LOG_WARN("eval param value failed");
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} else if (OB_UNLIKELY(param_datum->is_null())) {
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expr_datum.set_null();
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} else if (FALSE_IT(date_sql_mode.init(session->get_sql_mode()))) {
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} else if (OB_FAIL(ob_datum_to_ob_time_with_date(
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*param_datum, expr.args_[0]->datum_meta_.type_, get_timezone_info(session),
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ot, get_cur_time(ctx.exec_ctx_.get_physical_plan_ctx()), false, date_sql_mode,
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expr.args_[0]->obj_meta_.has_lob_header()))) {
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LOG_WARN("cast to ob time failed", K(ret));
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uint64_t cast_mode = 0;
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ObSQLUtils::get_default_cast_mode(session->get_stmt_type(), session, cast_mode);
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if (CM_IS_WARN_ON_FAIL(cast_mode)) {
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ret = OB_SUCCESS;
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}
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expr_datum.set_null();
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} else if (ot.parts_[DT_YEAR] <= 0) {
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expr_datum.set_null();
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} else {
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int64_t weekday = ot.parts_[DT_WDAY] - 1;
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expr_datum.set_int(weekday);
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}
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return ret;
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}
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int ObExprWeekDay::is_valid_for_generated_column(const ObRawExpr*expr, const common::ObIArray<ObRawExpr *> &exprs, bool &is_valid) const {
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int ret = OB_SUCCESS;
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if (OB_FAIL(check_first_param_not_time(exprs, is_valid))) {
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LOG_WARN("fail to check if first param is time", K(ret), K(exprs));
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}
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return ret;
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}
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ObExprYearWeek::ObExprYearWeek(ObIAllocator& alloc)
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: ObFuncExprOperator(alloc,
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T_FUN_SYS_YEARWEEK_OF_DATE,
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N_YEARWEEK_OF_DATE,
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ONE_OR_TWO,
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NOT_VALID_FOR_GENERATED_COL, NOT_ROW_DIMENSION)
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{
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}
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ObExprYearWeek::~ObExprYearWeek() {}
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int ObExprYearWeek::calc_result_typeN(ObExprResType& type,
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ObExprResType* types_stack,
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int64_t param_num,
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ObExprTypeCtx& type_ctx) const
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{
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UNUSED(type_ctx);
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int ret = OB_SUCCESS;
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if (OB_ISNULL(types_stack)) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("null types",K(ret));
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} else if (OB_UNLIKELY(param_num > 2)) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("param num is not correct", K(param_num));
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} else {
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if (2 == param_num) {
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types_stack[1].set_calc_type(common::ObIntType);
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}
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if (ob_is_enumset_tc(types_stack[0].get_type())) {
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types_stack[0].set_calc_type(common::ObVarcharType);
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}
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}
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if(OB_SUCC(ret)) {
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type.set_int();
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type.set_scale(common::DEFAULT_SCALE_FOR_INTEGER);
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type.set_precision(common::ObAccuracy::
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DDL_DEFAULT_ACCURACY[common::ObIntType].precision_);
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}
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return ret;
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}
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//参考 https://dev.mysql.com/doc/refman/8.0/en/date-and-time-functions.html 了解更多mode的含义
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template <typename T>
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static int ob_expr_calc_yearweek(const int64_t &mode_value,
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const ObTime &ot,
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int64_t &week_value,
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ObDTMode mode,
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T& result)
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{
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int ret = OB_SUCCESS;
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int64_t week = 0;
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int64_t year = 0;
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int32_t delta = 0;
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int64_t flag = 0;
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//在mode为负值时，和mysql结果保持一致。
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flag = (mode_value % 8 >= 0 ? mode_value % 8 : 8 + (mode_value % 8));
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switch (flag) {
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case 0: //每年的第一周以星期天开始，每周以星期天开始
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week = ObTimeConverter::ob_time_to_week(
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ot, DT_WEEK_SUN_BEGIN + mode, delta);
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break;
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case 2:
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week = ObTimeConverter::ob_time_to_week(
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ot, DT_WEEK_SUN_BEGIN, delta);
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break;
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case 1: //每年的第一周需要该周大于三天，每周以星期一开始
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week = ObTimeConverter::ob_time_to_week(
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ot, DT_WEEK_GE_4_BEGIN + mode, delta);
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break;
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case 3:
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week = ObTimeConverter::ob_time_to_week(
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ot, DT_WEEK_GE_4_BEGIN, delta);
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break;
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case 4: //每年的第一周需要该周大于三天，每周以星期天开始
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week = ObTimeConverter::ob_time_to_week(
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ot, DT_WEEK_GE_4_BEGIN + DT_WEEK_SUN_BEGIN + mode, delta);
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break;
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case 6:
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week = ObTimeConverter::ob_time_to_week(
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ot, DT_WEEK_GE_4_BEGIN + DT_WEEK_SUN_BEGIN, delta);
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break;
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case 5: //每年的第一周需要以星期一开始，每周以星期一开始
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week = ObTimeConverter::ob_time_to_week(ot, mode, delta);
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break;
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case 7:
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week = ObTimeConverter::ob_time_to_week(ot, 0, delta);
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break;
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default:
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("unexpected flag value",K(ret),K(flag), K(mode));
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break;
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}
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if(OB_SUCC(ret)) {
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year = ot.parts_[DT_YEAR] + delta;
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week_value = week;
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result.set_int(year * 100 + week);
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}
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return ret;
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}
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int ObExprYearWeek::cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const
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{
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UNUSED(op_cg_ctx);
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UNUSED(raw_expr);
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int ret = OB_SUCCESS;
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if (rt_expr.arg_cnt_ != 1 && rt_expr.arg_cnt_ != 2) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("yearweek expr should have one or two params", K(ret), K(rt_expr.arg_cnt_));
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} else if (OB_ISNULL(rt_expr.args_) || OB_ISNULL(rt_expr.args_[0])) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("children of yearweek expr is null", K(ret), K(rt_expr.args_));
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} else if (2 == rt_expr.arg_cnt_ && OB_ISNULL(rt_expr.args_[1])) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("second child of yearweek expr is null", K(ret), K(rt_expr.args_));
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} else {
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rt_expr.eval_func_ = ObExprYearWeek::calc_yearweek;
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}
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return ret;
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}
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int ObExprYearWeek::calc_yearweek(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum)
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{
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int ret = OB_SUCCESS;
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ObDatum *param_datum = NULL;
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int64_t mode_value = 0;
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int64_t week = 0;
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ObTime ot;
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ObDateSqlMode date_sql_mode;
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const ObSQLSessionInfo *session = NULL;
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if (OB_ISNULL(session = ctx.exec_ctx_.get_my_session())) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("session is null", K(ret));
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} else if (OB_FAIL(expr.args_[0]->eval(ctx, param_datum))) {
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LOG_WARN("eval param value failed");
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} else if (OB_UNLIKELY(param_datum->is_null())) {
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expr_datum.set_null();
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} else if (FALSE_IT(date_sql_mode.init(session->get_sql_mode()))) {
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} else if (OB_FAIL(ob_datum_to_ob_time_with_date(
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*param_datum, expr.args_[0]->datum_meta_.type_, get_timezone_info(session),
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ot, get_cur_time(ctx.exec_ctx_.get_physical_plan_ctx()), false,
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date_sql_mode, expr.args_[0]->obj_meta_.has_lob_header()))) {
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LOG_WARN("cast to ob time failed", K(ret));
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uint64_t cast_mode = 0;
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ObSQLUtils::get_default_cast_mode(session->get_stmt_type(), session, cast_mode);
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if (CM_IS_WARN_ON_FAIL(cast_mode)) {
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ret = OB_SUCCESS;
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}
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expr_datum.set_null();
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} else if (ot.parts_[DT_YEAR] <= 0) {
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expr_datum.set_null();
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} else {
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// 短路计算
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if (2 == expr.arg_cnt_) {
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ObDatum *param_datum2 = NULL;
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if (OB_FAIL(expr.args_[1]->eval(ctx, param_datum2))) {
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LOG_WARN("eval param value failed");
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} else if (OB_LIKELY(!param_datum2->is_null())) {
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mode_value = param_datum2->get_int();
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}
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}
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if (OB_SUCC(ret)) {
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ret = ob_expr_calc_yearweek(mode_value, ot, week, 0, expr_datum);
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}
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}
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return ret;
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}
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int ObExprYearWeek::is_valid_for_generated_column(const ObRawExpr*expr, const common::ObIArray<ObRawExpr *> &exprs, bool &is_valid) const {
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int ret = OB_SUCCESS;
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if (OB_FAIL(check_first_param_not_time(exprs, is_valid))) {
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LOG_WARN("fail to check if first param is time", K(ret), K(exprs));
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}
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return ret;
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}
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ObExprWeek::ObExprWeek(ObIAllocator& alloc)
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: ObFuncExprOperator(alloc,
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T_FUN_SYS_WEEK,
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N_WEEK,
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ONE_OR_TWO, NOT_VALID_FOR_GENERATED_COL, NOT_ROW_DIMENSION)
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{
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}
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ObExprWeek::~ObExprWeek() {}
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int ObExprWeek::calc_result_typeN(ObExprResType& type,
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ObExprResType* types_stack,
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int64_t params_count,
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common::ObExprTypeCtx& type_ctx) const
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{
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UNUSED(type_ctx);
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int ret = OB_SUCCESS;
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if (OB_ISNULL(types_stack)) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("null types",K(ret));
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} else if (OB_UNLIKELY(params_count > 2)) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("param num is not correct", K(params_count));
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} else {
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if (2 == params_count) {
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types_stack[1].set_calc_type(common::ObIntType);
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}
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if (ob_is_enumset_tc(types_stack[0].get_type())) {
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types_stack[0].set_calc_type(common::ObVarcharType);
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}
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}
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if(OB_SUCC(ret)) {
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type.set_int();
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type.set_scale(common::DEFAULT_SCALE_FOR_INTEGER);
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type.set_precision(common::ObAccuracy::
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DDL_DEFAULT_ACCURACY[common::ObIntType].precision_);
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}
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return ret;
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}
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int ObExprWeek::cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const
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{
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UNUSED(op_cg_ctx);
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UNUSED(raw_expr);
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int ret = OB_SUCCESS;
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if (rt_expr.arg_cnt_ != 1 && rt_expr.arg_cnt_ != 2) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("week expr should have one or two params", K(ret), K(rt_expr.arg_cnt_));
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} else if (OB_ISNULL(rt_expr.args_) || OB_ISNULL(rt_expr.args_[0])) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("children of week expr is null", K(ret), K(rt_expr.args_));
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} else if (2 == rt_expr.arg_cnt_ && OB_ISNULL(rt_expr.args_[1])) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("second child of week expr is null", K(ret), K(rt_expr.args_));
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} else {
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rt_expr.eval_func_ = ObExprWeek::calc_week;
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}
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return ret;
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}
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int ObExprWeek::calc_week(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum)
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{
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int ret = OB_SUCCESS;
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ObDatum *param_datum = NULL;
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int64_t mode_value = 0;
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int64_t week = 0;
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ObTime ot;
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ObDateSqlMode date_sql_mode;
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const ObSQLSessionInfo *session = NULL;
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if (OB_ISNULL(session = ctx.exec_ctx_.get_my_session())) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("session is null", K(ret));
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} else if (OB_FAIL(expr.args_[0]->eval(ctx, param_datum))) {
|
|
LOG_WARN("eval param value failed");
|
|
} else if (OB_UNLIKELY(param_datum->is_null())) {
|
|
expr_datum.set_null();
|
|
} else if (FALSE_IT(date_sql_mode.init(session->get_sql_mode()))) {
|
|
} else if (OB_FAIL(ob_datum_to_ob_time_with_date(
|
|
*param_datum, expr.args_[0]->datum_meta_.type_, get_timezone_info(session),
|
|
ot, get_cur_time(ctx.exec_ctx_.get_physical_plan_ctx()), false, date_sql_mode,
|
|
expr.args_[0]->obj_meta_.has_lob_header()))) {
|
|
LOG_WARN("cast to ob time failed", K(ret));
|
|
uint64_t cast_mode = 0;
|
|
ObSQLUtils::get_default_cast_mode(session->get_stmt_type(), session, cast_mode);
|
|
if (CM_IS_WARN_ON_FAIL(cast_mode)) {
|
|
LOG_WARN("cast to ob time failed", K(ret));
|
|
LOG_USER_WARN(OB_ERR_CAST_VARCHAR_TO_TIME);
|
|
ret = OB_SUCCESS;
|
|
}
|
|
expr_datum.set_null();
|
|
} else if (ot.parts_[DT_YEAR] <= 0) {
|
|
expr_datum.set_null();
|
|
} else {
|
|
// 短路计算
|
|
if (2 == expr.arg_cnt_) {
|
|
ObDatum *param_datum2 = NULL;
|
|
if (OB_FAIL(expr.args_[1]->eval(ctx, param_datum2))) {
|
|
LOG_WARN("eval param value failed");
|
|
} else if (OB_LIKELY(!param_datum2->is_null())) {
|
|
mode_value = param_datum2->get_int();
|
|
}
|
|
}
|
|
if (OB_SUCC(ret)) {
|
|
if (OB_FAIL(ob_expr_calc_yearweek(mode_value, ot, week, DT_WEEK_ZERO_BEGIN, expr_datum))) {
|
|
LOG_WARN("cal yearweek failed", K(ret), K(mode_value), K(ot));
|
|
} else {
|
|
expr_datum.set_int(week);
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int ObExprWeek::is_valid_for_generated_column(const ObRawExpr*expr, const common::ObIArray<ObRawExpr *> &exprs, bool &is_valid) const {
|
|
int ret = OB_SUCCESS;
|
|
if (OB_FAIL(check_first_param_not_time(exprs, is_valid))) {
|
|
LOG_WARN("fail to check if first param is time", K(ret), K(exprs));
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
}
|
|
}
|