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Remove broken Assertions that failed if a statement executed in PL/pgSQL is

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rewritten into another kind of statement, for example if an INSERT is
rewritten into an UPDATE.

Back-patch to 8.3 and 8.2. For HEAD, Tom suggested inventing a new
SPI_OK_REWRITTEN return code, but that's not a backportable solution. I'll
do that as a separate patch, this patch will do as a stopgap measure for HEAD
too in the meanwhile.
This commit is contained in:
Heikki Linnakangas 2009-01-14 09:53:57 +00:00
parent 63ca96af30
commit 963b87c50b
1 changed files with 10 additions and 6 deletions
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16
src/pl/plpgsql/src/pl_exec.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/pl/plpgsql/src/pl_exec.c,v 1.180.2.7 2009/01/07 20:39:15 tgl Exp $
* $PostgreSQL: pgsql/src/pl/plpgsql/src/pl_exec.c,v 1.180.2.8 2009/01/14 09:53:57 heikki Exp $
*
*-------------------------------------------------------------------------
*/
@ -2425,13 +2425,19 @@ exec_stmt_execsql(PLpgSQL_execstate *estate,
/*
* Check for error, and set FOUND if appropriate (for historical reasons
* we set FOUND only for certain query types). Also Assert that we
* identified the statement type the same as SPI did.
* we set FOUND only for certain query types).
*
* Note: the command type indicated by return code might not match
* mod_stmt, if there is an INSTEAD OF rule rewriting an UPDATE into an
* INSERT, for example. In that case, the INSERT doesn't have canSetTag
* set, mod_stmt is false, and SPI_execute_plan sets SPI_processed to
* zero. We'll set FOUND to false here in that case. If the statement is
* rewritten into a utility statement, however, FOUND is left unchanged.
* Arguably that's a bug, but changing it now could break applications.
*/
switch (rc)
{
case SPI_OK_SELECT:
Assert(!stmt->mod_stmt);
exec_set_found(estate, (SPI_processed != 0));
break;
@ -2441,13 +2447,11 @@ exec_stmt_execsql(PLpgSQL_execstate *estate,
case SPI_OK_INSERT_RETURNING:
case SPI_OK_UPDATE_RETURNING:
case SPI_OK_DELETE_RETURNING:
Assert(stmt->mod_stmt);
exec_set_found(estate, (SPI_processed != 0));
break;
case SPI_OK_SELINTO:
case SPI_OK_UTILITY:
Assert(!stmt->mod_stmt);
break;
default: