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Fix caching of foreign-key-checking queries so that when a replan is needed,

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we regenerate the SQL query text not merely the plan derived from it.  This
is needed to handle contingencies such as renaming of a table or column
used in an FK.  Pre-8.3, such cases worked despite the lack of replanning
(because the cached plan needn't actually change), so this is a regression.
Per bug #4417 from Benjamin Bihler.
This commit is contained in:
Tom Lane
2008-09-15 23:37:40 +00:00
parent 448950b37b
commit 1cd935609f
5 changed files with 103 additions and 7 deletions
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3
src/include/executor/spi.h
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@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/executor/spi.h,v 1.66 2008/04/01 03:09:30 tgl Exp $
* $PostgreSQL: pgsql/src/include/executor/spi.h,v 1.67 2008/09/15 23:37:40 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -118,6 +118,7 @@ extern int SPI_freeplan(SPIPlanPtr plan);
extern Oid SPI_getargtypeid(SPIPlanPtr plan, int argIndex);
extern int SPI_getargcount(SPIPlanPtr plan);
extern bool SPI_is_cursor_plan(SPIPlanPtr plan);
extern bool SPI_plan_is_valid(SPIPlanPtr plan);
extern const char *SPI_result_code_string(int code);
extern HeapTuple SPI_copytuple(HeapTuple tuple);