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doc: Fix wording of MERGE actions in README

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UPDATE was listed twice and DELETE was omitted, replace one UPDATE
with DELETE instead.

Backpatch through v15 where MERGE was added.

Author: Myo Wai Thant <myo.waithant@fujitsu.com>
Reviewed-by: Richard Guo <guofenglinux@gmail.com>
Discussion: https://postgr.es/m/OSAPR01MB43247E46931E9E9CFC4AA0F29A079@OSAPR01MB4324.jpnprd01.prod.outlook.com
Backpatch-through: 15
This commit is contained in:
Daniel Gustafsson 2022-11-17 10:07:06 +01:00
parent e49e191815
commit 1eaa48e998
1 changed files with 1 additions and 1 deletions
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src/backend/executor/README
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@ -229,7 +229,7 @@ MERGE
MERGE is a multiple-table, multiple-action command: It specifies a target MERGE is a multiple-table, multiple-action command: It specifies a target
table and a source relation, and can contain multiple WHEN MATCHED and table and a source relation, and can contain multiple WHEN MATCHED and
WHEN NOT MATCHED clauses, each of which specifies one UPDATE, INSERT, WHEN NOT MATCHED clauses, each of which specifies one UPDATE, INSERT,
UPDATE, or DO NOTHING actions. The target table is modified by MERGE, DELETE, or DO NOTHING actions. The target table is modified by MERGE,
and the source relation supplies additional data for the actions. Each action and the source relation supplies additional data for the actions. Each action
optionally specifies a qualifying expression that is evaluated for each tuple. optionally specifies a qualifying expression that is evaluated for each tuple.