Simon Charette 88bf635c35 [2.2.x] Fixed #30385 -- Restored SearchVector(config) immutability.
Regression in 1a28dc3887e8d66d5e3ff08cf7fb0a6212b873e5.

The usage of CONCAT to allow SearchVector to deal with non-text fields
made the generated expression non-IMMUTABLE which prevents a functional
index to be created for it.

Using a combination of COALESCE and ::text makes sure the expression
preserves its immutability.

Refs #29582. Thanks Andrew Brown for the report, Nick Pope for the
review.

Backport of 405c8363362063542e9e79beac53c8437d389520 from master
2019-04-23 08:32:36 +02:00
..
2018-11-10 17:25:10 -05:00
2017-05-24 09:13:26 -04:00
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