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修复connect by 查询中使用同义词报错

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函数ColumnRefFindRelname中，当没有显式指定别名时，应该采用
rte->eref->aliasname作为查找的表名，以此适配同义词场景
This commit is contained in:
cc_db_dev
2023-03-10 15:07:19 +08:00
parent 02b127d59a
commit b419fbcae1
3 changed files with 166 additions and 2 deletions
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10
src/common/backend/parser/parse_expr.cpp
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@ -3566,8 +3566,14 @@ static char *ColumnRefFindRelname(ParseState *pstate, const char *colname)
Value *col = (Value *)lfirst(lc2);
if (strcmp(colname, strVal(col)) == 0) {
if (rte->rtekind == RTE_RELATION) {
relname = (rte->alias && rte->alias->aliasname) ?
rte->alias->aliasname : rte->relname;
if (rte->alias && rte->alias->aliasname) {
relname = rte->alias->aliasname;
} else if (rte->eref && rte->eref->aliasname) {
/* should use eref->aliasname for SYNONYM*/
relname = rte->eref->aliasname;
} else {
relname = rte->relname;
}
} else if (rte->rtekind == RTE_SUBQUERY) {
relname = rte->alias->aliasname;
} else if (rte->rtekind == RTE_CTE) {