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Commite90710f

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committed
Dump an unvalidated constraint separately from its table
This allows possibly violating data to be imported before the constraintis installed.Bug reported by Thom Brown
1 parentf21fc7f commite90710f

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1 file changed

+33
-11
lines changed

1 file changed

+33
-11
lines changed

‎src/bin/pg_dump/pg_dump.c‎

Lines changed: 33 additions & 11 deletions
Original file line numberDiff line numberDiff line change
@@ -5953,11 +5953,22 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
59535953
tbinfo->dobj.name);
59545954

59555955
resetPQExpBuffer(q);
5956-
if (g_fout->remoteVersion >=80400)
5956+
if (g_fout->remoteVersion >=90100)
59575957
{
59585958
appendPQExpBuffer(q,"SELECT tableoid, oid, conname, "
59595959
"pg_catalog.pg_get_constraintdef(oid) AS consrc, "
5960-
"conislocal "
5960+
"conislocal, convalidated "
5961+
"FROM pg_catalog.pg_constraint "
5962+
"WHERE conrelid = '%u'::pg_catalog.oid "
5963+
" AND contype = 'c' "
5964+
"ORDER BY conname",
5965+
tbinfo->dobj.catId.oid);
5966+
}
5967+
elseif (g_fout->remoteVersion >=80400)
5968+
{
5969+
appendPQExpBuffer(q,"SELECT tableoid, oid, conname, "
5970+
"pg_catalog.pg_get_constraintdef(oid) AS consrc, "
5971+
"conislocal, true AS convalidated "
59615972
"FROM pg_catalog.pg_constraint "
59625973
"WHERE conrelid = '%u'::pg_catalog.oid "
59635974
" AND contype = 'c' "
@@ -5968,7 +5979,7 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
59685979
{
59695980
appendPQExpBuffer(q,"SELECT tableoid, oid, conname, "
59705981
"pg_catalog.pg_get_constraintdef(oid) AS consrc, "
5971-
"true AS conislocal "
5982+
"true AS conislocal, true AS convalidated "
59725983
"FROM pg_catalog.pg_constraint "
59735984
"WHERE conrelid = '%u'::pg_catalog.oid "
59745985
" AND contype = 'c' "
@@ -5980,7 +5991,7 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
59805991
/* no pg_get_constraintdef, must use consrc */
59815992
appendPQExpBuffer(q,"SELECT tableoid, oid, conname, "
59825993
"'CHECK (' || consrc || ')' AS consrc, "
5983-
"true AS conislocal "
5994+
"true AS conislocal, true AS convalidated "
59845995
"FROM pg_catalog.pg_constraint "
59855996
"WHERE conrelid = '%u'::pg_catalog.oid "
59865997
" AND contype = 'c' "
@@ -5993,7 +6004,7 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
59936004
appendPQExpBuffer(q,"SELECT tableoid, 0 AS oid, "
59946005
"rcname AS conname, "
59956006
"'CHECK (' || rcsrc || ')' AS consrc, "
5996-
"true AS conislocal "
6007+
"true AS conislocal, true AS convalidated "
59976008
"FROM pg_relcheck "
59986009
"WHERE rcrelid = '%u'::oid "
59996010
"ORDER BY rcname",
@@ -6004,7 +6015,7 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
60046015
appendPQExpBuffer(q,"SELECT tableoid, oid, "
60056016
"rcname AS conname, "
60066017
"'CHECK (' || rcsrc || ')' AS consrc, "
6007-
"true AS conislocal "
6018+
"true AS conislocal, true AS convalidated "
60086019
"FROM pg_relcheck "
60096020
"WHERE rcrelid = '%u'::oid "
60106021
"ORDER BY rcname",
@@ -6017,7 +6028,7 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
60176028
"(SELECT oid FROM pg_class WHERE relname = 'pg_relcheck') AS tableoid, "
60186029
"oid, rcname AS conname, "
60196030
"'CHECK (' || rcsrc || ')' AS consrc, "
6020-
"true AS conislocal "
6031+
"true AS conislocal, true AS convalidated "
60216032
"FROM pg_relcheck "
60226033
"WHERE rcrelid = '%u'::oid "
60236034
"ORDER BY rcname",
@@ -6042,6 +6053,8 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
60426053

60436054
for (j=0;j<numConstrs;j++)
60446055
{
6056+
boolvalidated=PQgetvalue(res,j,5)[0]=='t';
6057+
60456058
constrs[j].dobj.objType=DO_CONSTRAINT;
60466059
constrs[j].dobj.catId.tableoid=atooid(PQgetvalue(res,j,0));
60476060
constrs[j].dobj.catId.oid=atooid(PQgetvalue(res,j,1));
@@ -6057,18 +6070,27 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
60576070
constrs[j].condeferrable= false;
60586071
constrs[j].condeferred= false;
60596072
constrs[j].conislocal= (PQgetvalue(res,j,4)[0]=='t');
6060-
constrs[j].separate= false;
6073+
/*
6074+
* An unvalidated constraint needs to be dumped separately, so
6075+
* that potentially-violating existing data is loaded before
6076+
* the constraint.
6077+
*/
6078+
constrs[j].separate= !validated;
60616079

60626080
constrs[j].dobj.dump=tbinfo->dobj.dump;
60636081

60646082
/*
60656083
* Mark the constraint as needing to appear before the table
60666084
* --- this is so that any other dependencies of the
60676085
* constraint will be emitted before we try to create the
6068-
* table.
6086+
* table. If the constraint is not validated, it will be
6087+
* dumped after data is loaded anyway, so don't do it. (There's
6088+
* an automatic dependency in the opposite direction anyway, so
6089+
* don't need to add one manually here.)
60696090
*/
6070-
addObjectDependency(&tbinfo->dobj,
6071-
constrs[j].dobj.dumpId);
6091+
if (validated)
6092+
addObjectDependency(&tbinfo->dobj,
6093+
constrs[j].dobj.dumpId);
60726094

60736095
/*
60746096
* If the constraint is inherited, this will be detected later

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