wangyum commented on a change in pull request #25740:
[SPARK-28412][SQL][TEST][FOLLOW-UP]Enable overlay binary function tests
URL: https://github.com/apache/spark/pull/25740#discussion_r322613773
##########
File path: sql/core/src/test/resources/sql-tests/inputs/pgSQL/strings.sql
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@@ -653,8 +653,9 @@ SELECT trim(binary('\\000') from binary('\\000Tom\\000'));
-- SELECT btrim(E'\\000trim\\000'::bytea, ''::bytea);
-- [SPARK-28121] decode can not accept 'escape' as charset
-- [SPARK-28412][SQL] ANSI SQL: OVERLAY function support byte array
--- SELECT encode(overlay(E'Th\\000omas'::bytea placing E'Th\\001omas'::bytea
from 2),'escape');
--- SELECT encode(overlay(E'Th\\000omas'::bytea placing E'\\002\\003'::bytea
from 8),'escape');
--- SELECT encode(overlay(E'Th\\000omas'::bytea placing E'\\002\\003'::bytea
from 5 for 3),'escape');
Review comment:
I think the expected SQL is:
```sql
SELECT encode(overlay(binary(E'Th\\000omas') placing binary(E'Th\\001omas')
from 2),'escape');
```
But we don't support **String Constants with C-style Escapes**(SPARK-29034)
and **`decode` can not accept 'escape' as charset**(SPARK-28121) now.
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