[CALCITE-6450] Postgres CONCAT_WS function throws exception when parameter type is (<CHAR(1)>, <INTEGER ARRAY>)

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.37.0
• Fix Version/s: 1.38.0
• Component/s: core
• Labels: pull-request-available
• Assignee: Unassigned
• Reporter: xiong duan
• Created: 28/Jun/24 10:58
• Updated: 17/Oct/24 22:41
• Resolved: 17/Oct/24 22:41

Description

The SQL can run success in Postgres:

select concat_ws(',',ARRAY[10000, 10000, 10000, 10000]); 

But in Calcite, It will throw exception:

@Test void testConcatFunction() {
final String sql = "select concat_ws(',',ARRAY[10000, 10000, 10000, 10000]) as c";
fixture()
.withFactory(c ->
c.withOperatorTable(t ->
SqlValidatorTest.operatorTableFor(SqlLibrary.POSTGRESQL)))
.withCatalogReader(MockCatalogReaderExtended::create)
.withSql(sql)
.ok();
}

From line 1, column 8 to line 1, column 55: Cannot apply 'CONCAT_WS' to arguments of type 'CONCAT_WS(<CHAR(1)>, <INTEGER ARRAY>)'. Supported form(s): 'CONCAT_WS(<STRING>)'

This issue find in comment CALCITE-6446 .

Issue Links

• is related to: CALCITE-5741 Add CONCAT_WS function (enabled in MSSQL, MySQL, Postgres libraries)
• is related to: CALCITE-6446 Add CONCAT_WS function (enabled in Spark library)
• links to: GitHub Pull Request #3846