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Allow ALTER TYPE .. ADD ATTRIBUTE .. CASCADE to recurse to descendants.

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Without this, adding an attribute to a typed table with an inheritance
child fails, which is surprising.

Noah Misch, with minor changes by me.
This commit is contained in:
Robert Haas
2011-04-20 22:49:37 -04:00
parent 8ede427938
commit a0e8df527e
4 changed files with 23 additions and 3 deletions
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5
src/backend/commands/tablecmds.c
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@ -3876,7 +3876,8 @@ ATSimpleRecursion(List **wqueue, Relation rel,
* ATTypedTableRecursion
*
* Propagate ALTER TYPE operations to the typed tables of that type.
* Also check the RESTRICT/CASCADE behavior.
* Also check the RESTRICT/CASCADE behavior. Given CASCADE, also permit
* recursion to inheritance children of the typed tables.
*/
static void
ATTypedTableRecursion(List **wqueue, Relation rel, AlterTableCmd *cmd,
@ -3898,7 +3899,7 @@ ATTypedTableRecursion(List **wqueue, Relation rel, AlterTableCmd *cmd,
childrel = relation_open(childrelid, lockmode);
CheckTableNotInUse(childrel, "ALTER TABLE");
ATPrepCmd(wqueue, childrel, cmd, false, true, lockmode);
ATPrepCmd(wqueue, childrel, cmd, true, true, lockmode);
relation_close(childrel, NoLock);
}
}