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Transaction chaining

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Add command variants COMMIT AND CHAIN and ROLLBACK AND CHAIN, which
start new transactions with the same transaction characteristics as the
just finished one, per SQL standard.

Support for transaction chaining in PL/pgSQL is also added.  This
functionality is especially useful when running COMMIT in a loop in
PL/pgSQL.

Reviewed-by: Fabien COELHO <coelho@cri.ensmp.fr>
Discussion: https://www.postgresql.org/message-id/flat/28536681-324b-10dc-ade8-ab46f7645a5a@2ndquadrant.com
This commit is contained in:
Peter Eisentraut
2019-03-24 10:33:14 +01:00
parent b2db277057
commit 280a408b48
26 changed files with 601 additions and 38 deletions
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src/backend/catalog/sql_features.txt
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@@ -443,7 +443,7 @@ T213 INSTEAD OF triggers YES
T231 Sensitive cursors YES
T241 START TRANSACTION statement YES
T251 SET TRANSACTION statement: LOCAL option NO
T261 Chained transactions NO
T261 Chained transactions YES
T271 Savepoints YES
T272 Enhanced savepoint management NO
T281 SELECT privilege with column granularity YES