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fix result type deduce bug of expr_repeat

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This commit is contained in:
obdev
2023-08-09 12:48:38 +00:00
committed by ob-robot
parent 0ce1944196
commit 0854e787d1
3 changed files with 14 additions and 4 deletions
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8
src/sql/engine/expr/ob_expr_repeat.cpp
View File

@ -46,19 +46,21 @@ int ObExprRepeat::calc_result_type2(ObExprResType &type,
ObExprTypeCtx &type_ctx) const
{
int ret = OB_SUCCESS;
if (!ob_is_text_tc(text.get_type())) {
if (!ob_is_text_tc(text.get_type()) && !text.is_null()) {
text.set_calc_type(common::ObVarcharType);
}
if (!count.is_null()) {
count.set_calc_type(common::ObIntType);
}
// Set cast mode for %count parameter, truncate string to integer.
type_ctx.set_cast_mode(type_ctx.get_cast_mode() | CM_STRING_INTEGER_TRUNC);
// repeat is mysql only epxr.
CK(lib::is_mysql_mode());
if (OB_SUCC(ret)) {
ObObjType res_type = ObMaxType;
if (text.is_null() || count.is_null()) {
if (text.is_null() && !count.is_null()) {
res_type = ObVarcharType;
} else if (count.is_literal()) {
} else if (count.is_literal() && !count.is_null()) {
const ObObj &obj = count.get_param();
ObArenaAllocator alloc(ObModIds::OB_SQL_RES_TYPE);
const ObDataTypeCastParams dtc_params =

6
tools/deploy/mysql_test/test_suite/static_engine/r/mysql/expr_trim.result
View File

@ -187,3 +187,9 @@ select collation(TRIM( BOTH _binary'a' FROM _gbk'abc' )) ;
| gbk_chinese_ci |
+---------------------------------------------------+
select TRIM(LEADING 'a' FROM TRIM(SUBSTR(REPEAT(NULL, 4 + 1), 1, LEAST(146, 20))));
+-----------------------------------------------------------------------------+
| TRIM(LEADING 'a' FROM TRIM(SUBSTR(REPEAT(NULL, 4 + 1), 1, LEAST(146, 20)))) |
+-----------------------------------------------------------------------------+
| NULL |
+-----------------------------------------------------------------------------+

2
tools/deploy/mysql_test/test_suite/static_engine/t/expr_trim.test
View File

@ -68,5 +68,7 @@ select SUBSTRING( TRIM( BOTH CONVERT( 'a', BINARY( 0 ) ) FROM '+-Ã÷﹢ï
select collation(TRIM( BOTH _binary'a' FROM '+-Ã÷﹢﹣±/= â¥â' )) ;
select collation(TRIM( BOTH _binary'a' FROM _gbk'abc' )) ;
select TRIM(LEADING 'a' FROM TRIM(SUBSTR(REPEAT(NULL, 4 + 1), 1, LEAST(146, 20))));
connection syscon;
--sleep 2