doc: Fix column_name parameter in ALTER MATERIALIZED VIEW

Michael Paquier <michael@paquier.xyz>

Commit: c0acf25a5cf2d62b60d82e5bb0c553ce9c05a51d
Author: Michael Paquier <michael@paquier.xyz>
Date: 2024-05-23T04:03:22Z
Releases: 12.20
doc: Fix column_name parameter in ALTER MATERIALIZED VIEW

Parameter column_name must be an existing column because ALTER
MATERIALIZED VIEW cannot add new columns.  The old description was
likely copied from ALTER TABLE.

Author: Erik Wienhold
Discussion: https://postgr.es/m/6880ca53-7961-4eeb-86d5-6bd05fc2027e@ewie.name
Backpatch-through: 12

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doc/src/sgml/ref/alter_materialized_view.sgml modified +1 −1

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