[SPARK-29842][SQL][WIP] PostgreSQL dialect: cast to double #26522
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Can one of the admins verify this patch? |
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Thank you for contribution, @amanomer . As you know, unfortunately, we decided to remove PostgreSQL dialect via SPARK-30125 (#26763). Sorry about that. I'll close this PR, too. |
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What changes were proposed in this pull request?
To make SparkSQL's
cast as doublebehavior consistent with PostgreSQL when spark.sql.dialect is configured as PostgreSQL.Why are the changes needed?
SparkSQL and PostgreSQL have a lot different cast behavior between types by default. We should make SparkSQL's cast behavior be consistent with PostgreSQL when spark.sql.dialect is configured as PostgreSQL.
Does this PR introduce any user-facing change?
Yes. If user switches to PostgreSQL dialect now, they will
How was this patch tested?
Added test cases.