Add Nullif case for eval_const_expressions_mutator

Hou, Zhijie <houzj.fnst@cn.fujitsu.com>

From: "Hou, Zhijie" <houzj.fnst@cn.fujitsu.com>

To: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>

Date: 2020-11-10T11:31:47Z

Lists: pgsql-hackers

Attachments

0001-patch-eval-NULLIF.patch (application/octet-stream) patch 0001

Hi

I notice that there are no Nullif case in eval_const_expression.
Since Nullif is similar to Opexpr and is easy to implement,
I try add this case in eval_const_expressions_mutator.

Best regards,
houzj

Commits

Add support for NullIfExpr in eval_const_expressions
- 9c5f67fd6256 14.0 landed