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fix pushdown none const exprs into set query bug

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This commit is contained in:
zzg19950727
2023-08-09 10:42:35 +00:00
committed by ob-robot
parent 977dad219f
commit 7194825a19
2 changed files with 44 additions and 4 deletions
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45
src/sql/optimizer/ob_optimizer_util.cpp
View File

@ -26,6 +26,7 @@
#include "sql/optimizer/ob_log_table_scan.h"
#include "share/location_cache/ob_location_service.h"
#include "share/ob_order_perserving_encoder.h"
#include "sql/rewrite/ob_predicate_deduce.h"
using namespace oceanbase;
using namespace sql;
@ -6473,8 +6474,10 @@ int ObOptimizerUtil::check_pushdown_filter(const ObDMLStmt &parent_stmt,
remain_filters))) {
LOG_WARN("failed to check pushdown filter overlap index", K(ret));
}
} else {
ret = candi_filters.assign(pushdown_filters);
} else if (OB_FAIL(candi_filters.assign(pushdown_filters))) {
LOG_WARN("failed to assign exprs", K(ret));
} else if (OB_FAIL(remove_special_exprs(candi_filters, remain_filters))) {
LOG_WARN("failed to remove special exprs", K(ret));
}
} else if (OB_FAIL(get_groupby_win_func_common_exprs(subquery,
common_exprs,
@ -6506,6 +6509,30 @@ int ObOptimizerUtil::check_pushdown_filter(const ObDMLStmt &parent_stmt,
return ret;
}
int ObOptimizerUtil::remove_special_exprs(ObIArray<ObRawExpr*> &pushdown_filters,
ObIArray<ObRawExpr*> &remain_filters)
{
int ret = OB_SUCCESS;
ObSEArray<ObRawExpr *, 4> normal_filters;
for (int64_t i = 0; OB_SUCC(ret) && i < pushdown_filters.count(); ++i) {
if (OB_ISNULL(pushdown_filters.at(i))) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("predicate is null", K(ret));
} else if (ObPredicateDeduce::contain_special_expr(*pushdown_filters.at(i))) {
if (OB_FAIL(remain_filters.push_back(pushdown_filters.at(i)))) {
LOG_WARN("failed to push back expr", K(ret));
}
} else if (OB_FAIL(normal_filters.push_back(pushdown_filters.at(i)))) {
LOG_WARN("failed to push back expr", K(ret));
}
}
if (OB_SUCC(ret) &&
OB_FAIL(pushdown_filters.assign(normal_filters))) {
LOG_WARN("failed to assign filters", K(ret));
}
return ret;
}
int ObOptimizerUtil::check_pushdown_filter_overlap_index(const ObDMLStmt &stmt,
ObOptimizerContext &opt_ctx,
ObIArray<ObRawExpr*> &pushdown_filters,
@ -6540,9 +6567,15 @@ int ObOptimizerUtil::check_pushdown_filter_overlap_index(const ObDMLStmt &stmt,
}
if (OB_FAIL(ret)) {
} else if (is_match_index) {
ret = candi_filters.assign(pushdown_filters);
if (OB_FAIL(candi_filters.assign(pushdown_filters))) {
LOG_WARN("failed to assign exprs", K(ret));
} else if (OB_FAIL(remove_special_exprs(candi_filters, remain_filters))) {
LOG_WARN("failed to remove special exprs", K(ret));
}
} else {
ret = remain_filters.assign(pushdown_filters);
if (OB_FAIL(remain_filters.assign(pushdown_filters))) {
LOG_WARN("failed to assign exprs", K(ret));
}
}
return ret;
}
@ -6583,6 +6616,8 @@ int ObOptimizerUtil::check_pushdown_filter_for_set(const ObSelectStmt &parent_st
if (OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpect null expr", K(ret));
} else if (ObPredicateDeduce::contain_special_expr(*expr)) {
is_simple_expr = false;
} else if (expr->has_flag(CNT_WINDOW_FUNC) ||
expr->has_flag(CNT_AGG) ||
expr->has_flag(CNT_SUB_QUERY) ||
@ -6654,6 +6689,8 @@ int ObOptimizerUtil::check_pushdown_filter_for_subquery(const ObDMLStmt &parent_
if (OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpect null expr", K(ret));
} else if (ObPredicateDeduce::contain_special_expr(*expr)) {
is_simple_expr = false;
} else if (expr->has_flag(CNT_WINDOW_FUNC) ||
expr->has_flag(CNT_AGG) ||
expr->has_flag(CNT_SUB_QUERY)) {

3
src/sql/optimizer/ob_optimizer_util.h
View File

@ -1150,6 +1150,9 @@ public:
ObIArray<ObRawExpr*> &remain_filters,
bool check_match_index = true);
static int remove_special_exprs(ObIArray<ObRawExpr*> &pushdown_filters,
ObIArray<ObRawExpr*> &remain_filters);
static int check_pushdown_filter_overlap_index(const ObDMLStmt &stmt,
ObOptimizerContext &opt_ctx,
ObIArray<ObRawExpr*> &pushdown_filters,