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[FEAT MERGE] implement mysql dblink and read consistency

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Co-authored-by: xianyu-w <707512433@qq.com>
Co-authored-by: sdc <njucssdc@gmail.com>
Co-authored-by: seuwebber <webber_code@163.com>
This commit is contained in:
cqliang1995
2023-05-09 18:32:03 +00:00
committed by ob-robot
parent 38b78ad442
commit 4108e781d4
132 changed files with 2726 additions and 818 deletions
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69
src/sql/ob_dml_stmt_printer.cpp
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@ -915,7 +915,16 @@ int ObDMLStmtPrinter::print_base_table(const TableItem *table_item)
}
// flashback query
if (OB_SUCC(ret)) {
if (OB_NOT_NULL(table_item->flashback_query_expr_)) {
bool explain_non_extend = false;
if (OB_NOT_NULL(stmt_->get_query_ctx()) &&
OB_NOT_NULL(stmt_->get_query_ctx()->root_stmt_) &&
stmt_->get_query_ctx()->root_stmt_->is_explain_stmt()) {
explain_non_extend = !static_cast<const ObExplainStmt *>
(stmt_->get_query_ctx()->root_stmt_)->is_explain_extended();
}
if (OB_NOT_NULL(table_item->flashback_query_expr_) &&
// do not print flashback of link table when explain [basic]
!(table_item->is_link_table() && explain_non_extend)) {
if (table_item->flashback_query_type_ == TableItem::USING_TIMESTAMP) {
DATA_PRINTF(" as of timestamp ");
if (OB_FAIL(expr_printer_.do_print(table_item->flashback_query_expr_, T_NONE_SCOPE))) {
@ -1200,23 +1209,67 @@ int ObDMLStmtPrinter::print_limit()
} else if (stmt_->has_fetch() || is_oracle_mode()) {
/*有fetch,说明是oracle mode下的fetch填充的limit,这里不应该打印 */
} else {
if (NULL != stmt_->get_offset_expr() || NULL != stmt_->get_limit_expr()) {
ObRawExpr *offset_expr = stmt_->get_offset_expr();
ObRawExpr *limit_expr = stmt_->get_limit_expr();
if (NULL != offset_expr || NULL != limit_expr) {
DATA_PRINTF(" limit ");
}
// offset
if (OB_SUCC(ret)) {
if (NULL != stmt_->get_offset_expr()) {
if (OB_FAIL(expr_printer_.do_print(stmt_->get_offset_expr(), T_NONE_SCOPE))) {
LOG_WARN("fail to print order offset expr", K(ret));
if (NULL != offset_expr) {
if (NULL != print_params_.exec_ctx_) {
ObArenaAllocator allocator("PrintDMLStmt");
ObObj result;
bool got_result = false;
if (!offset_expr->is_static_const_expr()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("offset expr should be a const int", K(ret), KPC(offset_expr));
} else if (OB_FAIL(ObSQLUtils::calc_const_or_calculable_expr(print_params_.exec_ctx_,
offset_expr,
result,
got_result,
allocator))) {
LOG_WARN("failed to calc offset expr", K(ret));
} else if (!got_result || !result.is_int()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("failed to get the result of offset expr", K(ret), KPC(offset_expr));
} else {
DATA_PRINTF("%ld", result.get_int());
}
} else {
if (OB_FAIL(expr_printer_.do_print(offset_expr, T_NONE_SCOPE))) {
LOG_WARN("fail to print offset expr", K(ret));
}
}
DATA_PRINTF(",");
}
}
// limit
if (OB_SUCC(ret)) {
if (NULL != stmt_->get_limit_expr()) {
if (OB_FAIL(expr_printer_.do_print(stmt_->get_limit_expr(), T_NONE_SCOPE))) {
LOG_WARN("fail to print order limit expr", K(ret));
if (NULL != limit_expr) {
if (NULL != print_params_.exec_ctx_) {
ObArenaAllocator allocator("PrintDMLStmt");
ObObj result;
bool got_result = false;
if (!limit_expr->is_static_const_expr()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("limit expr should be a const int", K(ret), KPC(limit_expr));
} else if (OB_FAIL(ObSQLUtils::calc_const_or_calculable_expr(print_params_.exec_ctx_,
limit_expr,
result,
got_result,
allocator))) {
LOG_WARN("failed to calc limit expr", K(ret));
} else if (!got_result || !result.is_int()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("failed to get the result of limit expr", K(ret), KPC(limit_expr));
} else {
DATA_PRINTF("%ld", result.get_int());
}
} else {
if (OB_FAIL(expr_printer_.do_print(limit_expr, T_NONE_SCOPE))) {
LOG_WARN("fail to print limit expr", K(ret));
}
}
}
}