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Fix handling of inherited check constraints in ALTER COLUMN TYPE.

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This case got broken in 8.4 by the addition of an error check that
complains if ALTER TABLE ONLY is used on a table that has children.
We do use ONLY for this situation, but it's okay because the necessary
recursion occurs at a higher level.  So we need to have a separate
flag to suppress recursion without making the error check.

Reported and patched by Pavan Deolasee, with some editorial adjustments by
me.  Back-patch to 8.4, since this is a regression of functionality that
worked in earlier branches.
This commit is contained in:
Tom Lane
2012-11-05 13:36:16 -05:00
parent 4bb106ef4f
commit 5ed6546cf7
4 changed files with 63 additions and 10 deletions
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src/include/nodes/parsenodes.h
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@@ -1197,6 +1197,7 @@ typedef enum AlterTableType
AT_ReAddIndex, /* internal to commands/tablecmds.c */
AT_AddConstraint, /* add constraint */
AT_AddConstraintRecurse, /* internal to commands/tablecmds.c */
AT_ReAddConstraint, /* internal to commands/tablecmds.c */
AT_ValidateConstraint, /* validate constraint */
AT_ValidateConstraintRecurse, /* internal to commands/tablecmds.c */
AT_ProcessedConstraint, /* pre-processed add constraint (local in