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fix different byte length when union all with varchar

This commit is contained in:
wangjiaming0909 2024-12-06 09:11:08 +08:00
parent fc987b9722
commit 0e08aa413f
2 changed files with 9 additions and 1 deletions
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1
source/libs/scalar/src/scalar.c
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@ -1241,7 +1241,6 @@ EDealRes sclRewriteFunction(SNode **pNode, SScalarCtx *ctx) {
ctx->code = TSDB_CODE_OUT_OF_MEMORY;
return DEAL_RES_ERROR;
}
res->node.resType.bytes = varDataTLen(output.columnData->pData);
(void)memcpy(res->datum.p, output.columnData->pData, varDataTLen(output.columnData->pData));
} else {
ctx->code = nodesSetValueNodeValue(res, output.columnData->pData);

9
tests/system-test/2-query/union.py
View File

@ -426,6 +426,15 @@ class TDTestCase:
tdLog.printNoPrefix("==========step4:after wal, all check again ")
self.all_test()
self.test_TD_33137()
def test_TD_33137(self):
sql = "select 'asd' union all select 'asdasd'"
tdSql.query(sql, queryTimes=1)
tdSql.checkRows(2)
sql = "select db_name `TABLE_CAT`, '' `TABLE_SCHEM`, stable_name `TABLE_NAME`, 'TABLE' `TABLE_TYPE`, table_comment `REMARKS` from information_schema.ins_stables union all select db_name `TABLE_CAT`, '' `TABLE_SCHEM`, table_name `TABLE_NAME`, case when `type`='SYSTEM_TABLE' then 'TABLE' when `type`='NORMAL_TABLE' then 'TABLE' when `type`='CHILD_TABLE' then 'TABLE' else 'UNKNOWN' end `TABLE_TYPE`, table_comment `REMARKS` from information_schema.ins_tables union all select db_name `TABLE_CAT`, '' `TABLE_SCHEM`, view_name `TABLE_NAME`, 'VIEW' `TABLE_TYPE`, NULL `REMARKS` from information_schema.ins_views"
tdSql.query(sql, queryTimes=1)
tdSql.checkRows(47)
def stop(self):
tdSql.close()