[WIP][SPARK-29887][SQL]PostgreSQL dialect: cast to smallint #26542
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iRakson
changed the title
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Can one of the admins verify this patch? |
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Thank you for contribution, @iRakson . But, unfortunately, we decided to remove PostgreSQL dialect via SPARK-30125 (#26763). Sorry about that. I'll close this PR. |
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What changes were proposed in this pull request?
cast to smallint behaviour in SparkSQL is made consistent with PostgreSQL when spark.sql.dialect is set to PostgreSQL.
Why are the changes needed?
SparkSQL and PostgreSQL behaviour is very different when casting to smallint.
For e.g:
select cast('abc' to smallint) in SparkSQL gives null.
select cast('abc' to smallint) in PostgreSQL gives "invalid input syntax for integer: abc"
Does this PR introduce any user-facing change?
Yes
How was this patch tested?
Manually. Test cases will be added soon.