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Since COPY fires triggers, it seems like a good idea for it to use

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a frozen (copied) snapshot too.  Move execMain's snapshot copying code
out into a subroutine in case we find other places that need it.
This commit is contained in:
Tom Lane
2002-05-21 22:59:01 +00:00
parent 26fcd25c57
commit 6c6f395a8a
4 changed files with 44 additions and 22 deletions
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7
src/backend/commands/copy.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/copy.c,v 1.155 2002/05/21 22:05:54 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/copy.c,v 1.156 2002/05/21 22:59:00 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -447,6 +447,7 @@ CopyTo(Relation rel, bool binary, bool oids, FILE *fp,
bool *isvarlena;
int16 fld_size;
char *string;
Snapshot mySnapshot;
if (oids && !rel->rd_rel->relhasoids)
elog(ERROR, "COPY: table %s does not have OIDs",
@ -494,7 +495,9 @@ CopyTo(Relation rel, bool binary, bool oids, FILE *fp,
CopySendData(&tmp, sizeof(int32), fp);
}
scandesc = heap_beginscan(rel, QuerySnapshot, 0, NULL);
mySnapshot = CopyQuerySnapshot();
scandesc = heap_beginscan(rel, mySnapshot, 0, NULL);
while ((tuple = heap_getnext(scandesc, ForwardScanDirection)) != NULL)
{