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Enable ALTER TABLE ADD PRIMARY KEY for pg_dump, for performance reasons 

so index is not on table during COPY.

> > AFAICT, the patch I posted to -patches a little while to enable the
> > usage of ALTER TABLE ADD PRIMARY KEY by pg_dump hasn't been applied, nor
> > is it in the unapplied patches list. I was under the impression that
> > this was in the queue for application -- did it just get lost?

Neil Conway <neilconway@rogers.com>
This commit is contained in:
Bruce Momjian 2002-03-06 20:48:42 +00:00
parent 62e6eb9bf7
commit 5b5cef9abd
1 changed files with 13 additions and 42 deletions
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55
src/bin/pg_dump/pg_dump.c
View File

@ -22,7 +22,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $Header: /cvsroot/pgsql/src/bin/pg_dump/pg_dump.c,v 1.242 2002/02/27 20:59:05 tgl Exp $ * $Header: /cvsroot/pgsql/src/bin/pg_dump/pg_dump.c,v 1.243 2002/03/06 20:48:42 momjian Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -4259,7 +4259,7 @@ dumpTables(Archive *fout, TableInfo *tblinfo, int numTables,
/* put the CONSTRAINTS inside the table def */ /* Put the CONSTRAINTS inside the table def */
for (k = 0; k < tblinfo[i].ncheck; k++) for (k = 0; k < tblinfo[i].ncheck; k++)
{ {
if (actual_atts + k > 0) if (actual_atts + k > 0)
@ -4269,36 +4269,15 @@ dumpTables(Archive *fout, TableInfo *tblinfo, int numTables,
tblinfo[i].check_expr[k]); tblinfo[i].check_expr[k]);
} }
/* Primary Key */ /*
if (tblinfo[i].pkIndexOid != NULL) * Primary Key: In versions of PostgreSQL prior to 7.2, we
{ * needed to include the primary key in the table definition.
PQExpBuffer consDef; * However, this is not ideal because it creates an index
* on the table, which makes COPY slower. As of release 7.2,
/* Find the corresponding index */ * we can add primary keys to a table after is has been created,
for (k = 0; k < numIndexes; k++) * using ALTER TABLE ; see dumpIndexes() for more information.
{ * Therefore, we ignore primary keys in this function.
if (strcmp(indinfo[k].indexreloid, */
tblinfo[i].pkIndexOid) == 0)
break;
}
if (k >= numIndexes)
{
write_msg(NULL, "dumpTables(): failed sanity check, could not find index (%s) for primary key constraint\n",
tblinfo[i].pkIndexOid);
exit_nicely();
}
consDef = getPKconstraint(&tblinfo[i], &indinfo[k]);
if ((actual_atts + tblinfo[i].ncheck) > 0)
appendPQExpBuffer(q, ",\n\t");
appendPQExpBuffer(q, "%s", consDef->data);
destroyPQExpBuffer(consDef);
}
appendPQExpBuffer(q, "\n)"); appendPQExpBuffer(q, "\n)");
@ -4454,27 +4433,19 @@ dumpIndexes(Archive *fout, IndInfo *indinfo, int numIndexes,
/* Handle PK indexes */ /* Handle PK indexes */
if (strcmp(indinfo[i].indisprimary, "t") == 0) if (strcmp(indinfo[i].indisprimary, "t") == 0)
{ {
#if 0
/*
* PK: Enable this code when ALTER TABLE supports PK
* constraints.
*/
PQExpBuffer consDef = getPKconstraint(&tblinfo[tableInd], &indinfo[i]); PQExpBuffer consDef = getPKconstraint(&tblinfo[tableInd], &indinfo[i]);
resetPQExpBuffer(q); resetPQExpBuffer(q);
appendPQExpBuffer(q, "Alter Table %s Add %s;", appendPQExpBuffer(q, "Alter Table %s Add %s;",
fmtId(tblinfo[tableInd].relname, force_quotes), fmtId(tblinfo[tableInd].relname, force_quotes),
consDef->data); consDef->data);
ArchiveEntry(fout, indinfo[i].oid, tblinfo[tableInd].primary_key_name, ArchiveEntry(fout, indinfo[i].indexreloid, tblinfo[tableInd].primary_key_name,
"CONSTRAINT", NULL, q->data, "", "CONSTRAINT", NULL, q->data, "",
"", tblinfo[tableInd].usename, NULL, NULL); "", tblinfo[tableInd].usename, NULL, NULL);
destroyPQExpBuffer(consDef); destroyPQExpBuffer(consDef);
#endif
/* /*
* Don't need to do anything else for this system-generated * Don't need to do anything else for this system-generated