database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-09-02 04:21:28 +03:00
Code Activity

Add exclusion constraints, which generalize the concept of uniqueness to

Browse Source 
support any indexable commutative operator, not just equality.  Two rows
violate the exclusion constraint if "row1.col OP row2.col" is TRUE for
each of the columns in the constraint.

Jeff Davis, reviewed by Robert Haas
This commit is contained in:
Tom Lane
2009-12-07 05:22:23 +00:00
parent 8de7472b45
commit 0cb65564e5
43 changed files with 1613 additions and 236 deletions
Download Patch File Download Diff File Expand all files Collapse all files

111
src/bin/pg_dump/pg_dump.c
View File

@@ -12,7 +12,7 @@
* by PostgreSQL
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.553 2009/11/20 20:38:11 tgl Exp $
* $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.554 2009/12/07 05:22:22 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -3680,6 +3680,7 @@ getIndexes(TableInfo tblinfo[], int numTables)
i_condeferred,
i_contableoid,
i_conoid,
i_condef,
i_tablespace,
i_options;
int ntups;
@@ -3710,7 +3711,7 @@ getIndexes(TableInfo tblinfo[], int numTables)
* assume an index won't have more than one internal dependency.
*/
resetPQExpBuffer(query);
if (g_fout->remoteVersion >= 80200)
if (g_fout->remoteVersion >= 80500)
{
appendPQExpBuffer(query,
"SELECT t.tableoid, t.oid, "
@@ -3722,6 +3723,35 @@ getIndexes(TableInfo tblinfo[], int numTables)
"c.condeferrable, c.condeferred, "
"c.tableoid AS contableoid, "
"c.oid AS conoid, "
"pg_catalog.pg_get_constraintdef(c.oid, false) AS condef, "
"(SELECT spcname FROM pg_catalog.pg_tablespace s WHERE s.oid = t.reltablespace) AS tablespace, "
"array_to_string(t.reloptions, ', ') AS options "
"FROM pg_catalog.pg_index i "
"JOIN pg_catalog.pg_class t ON (t.oid = i.indexrelid) "
"LEFT JOIN pg_catalog.pg_depend d "
"ON (d.classid = t.tableoid "
"AND d.objid = t.oid "
"AND d.deptype = 'i') "
"LEFT JOIN pg_catalog.pg_constraint c "
"ON (d.refclassid = c.tableoid "
"AND d.refobjid = c.oid) "
"WHERE i.indrelid = '%u'::pg_catalog.oid "
"ORDER BY indexname",
tbinfo->dobj.catId.oid);
}
else if (g_fout->remoteVersion >= 80200)
{
appendPQExpBuffer(query,
"SELECT t.tableoid, t.oid, "
"t.relname AS indexname, "
"pg_catalog.pg_get_indexdef(i.indexrelid) AS indexdef, "
"t.relnatts AS indnkeys, "
"i.indkey, i.indisclustered, "
"c.contype, c.conname, "
"c.condeferrable, c.condeferred, "
"c.tableoid AS contableoid, "
"c.oid AS conoid, "
"null AS condef, "
"(SELECT spcname FROM pg_catalog.pg_tablespace s WHERE s.oid = t.reltablespace) AS tablespace, "
"array_to_string(t.reloptions, ', ') AS options "
"FROM pg_catalog.pg_index i "
@@ -3749,6 +3779,7 @@ getIndexes(TableInfo tblinfo[], int numTables)
"c.condeferrable, c.condeferred, "
"c.tableoid AS contableoid, "
"c.oid AS conoid, "
"null AS condef, "
"(SELECT spcname FROM pg_catalog.pg_tablespace s WHERE s.oid = t.reltablespace) AS tablespace, "
"null AS options "
"FROM pg_catalog.pg_index i "
@@ -3776,6 +3807,7 @@ getIndexes(TableInfo tblinfo[], int numTables)
"c.condeferrable, c.condeferred, "
"c.tableoid AS contableoid, "
"c.oid AS conoid, "
"null AS condef, "
"NULL AS tablespace, "
"null AS options "
"FROM pg_catalog.pg_index i "
@@ -3806,6 +3838,7 @@ getIndexes(TableInfo tblinfo[], int numTables)
"false AS condeferred, "
"0::oid AS contableoid, "
"t.oid AS conoid, "
"null AS condef, "
"NULL AS tablespace, "
"null AS options "
"FROM pg_index i, pg_class t "
@@ -3831,6 +3864,7 @@ getIndexes(TableInfo tblinfo[], int numTables)
"false AS condeferred, "
"0::oid AS contableoid, "
"t.oid AS conoid, "
"null AS condef, "
"NULL AS tablespace, "
"null AS options "
"FROM pg_index i, pg_class t "
@@ -3858,6 +3892,7 @@ getIndexes(TableInfo tblinfo[], int numTables)
i_condeferred = PQfnumber(res, "condeferred");
i_contableoid = PQfnumber(res, "contableoid");
i_conoid = PQfnumber(res, "conoid");
i_condef = PQfnumber(res, "condef");
i_tablespace = PQfnumber(res, "tablespace");
i_options = PQfnumber(res, "options");
@@ -3895,7 +3930,7 @@ getIndexes(TableInfo tblinfo[], int numTables)
indxinfo[j].indisclustered = (PQgetvalue(res, j, i_indisclustered)[0] == 't');
contype = *(PQgetvalue(res, j, i_contype));
if (contype == 'p' || contype == 'u')
if (contype == 'p' || contype == 'u' || contype == 'x')
{
/*
* If we found a constraint matching the index, create an
@@ -3913,7 +3948,10 @@ getIndexes(TableInfo tblinfo[], int numTables)
constrinfo[j].contable = tbinfo;
constrinfo[j].condomain = NULL;
constrinfo[j].contype = contype;
constrinfo[j].condef = NULL;
if (contype == 'x')
constrinfo[j].condef = strdup(PQgetvalue(res, j, i_condef));
else
constrinfo[j].condef = NULL;
constrinfo[j].confrelid = InvalidOid;
constrinfo[j].conindex = indxinfo[j].dobj.dumpId;
constrinfo[j].condeferrable = *(PQgetvalue(res, j, i_condeferrable)) == 't';
@@ -10728,7 +10766,9 @@ dumpConstraint(Archive *fout, ConstraintInfo *coninfo)
q = createPQExpBuffer();
delq = createPQExpBuffer();
if (coninfo->contype == 'p' || coninfo->contype == 'u')
if (coninfo->contype == 'p' ||
coninfo->contype == 'u' ||
coninfo->contype == 'x')
{
/* Index-related constraint */
IndxInfo *indxinfo;
@@ -10745,37 +10785,46 @@ dumpConstraint(Archive *fout, ConstraintInfo *coninfo)
appendPQExpBuffer(q, "ALTER TABLE ONLY %s\n",
fmtId(tbinfo->dobj.name));
appendPQExpBuffer(q, " ADD CONSTRAINT %s %s (",
fmtId(coninfo->dobj.name),
coninfo->contype == 'p' ? "PRIMARY KEY" : "UNIQUE");
appendPQExpBuffer(q, " ADD CONSTRAINT %s ",
fmtId(coninfo->dobj.name));
for (k = 0; k < indxinfo->indnkeys; k++)
if (coninfo->condef)
{
int indkey = (int) indxinfo->indkeys[k];
const char *attname;
if (indkey == InvalidAttrNumber)
break;
attname = getAttrName(indkey, tbinfo);
appendPQExpBuffer(q, "%s%s",
(k == 0) ? "" : ", ",
fmtId(attname));
/* pg_get_constraintdef should have provided everything */
appendPQExpBuffer(q, "%s;\n", coninfo->condef);
}
appendPQExpBuffer(q, ")");
if (indxinfo->options && strlen(indxinfo->options) > 0)
appendPQExpBuffer(q, " WITH (%s)", indxinfo->options);
if (coninfo->condeferrable)
else
{
appendPQExpBuffer(q, " DEFERRABLE");
if (coninfo->condeferred)
appendPQExpBuffer(q, " INITIALLY DEFERRED");
}
appendPQExpBuffer(q, "%s (",
coninfo->contype == 'p' ? "PRIMARY KEY" : "UNIQUE");
for (k = 0; k < indxinfo->indnkeys; k++)
{
int indkey = (int) indxinfo->indkeys[k];
const char *attname;
appendPQExpBuffer(q, ";\n");
if (indkey == InvalidAttrNumber)
break;
attname = getAttrName(indkey, tbinfo);
appendPQExpBuffer(q, "%s%s",
(k == 0) ? "" : ", ",
fmtId(attname));
}
appendPQExpBuffer(q, ")");
if (indxinfo->options && strlen(indxinfo->options) > 0)
appendPQExpBuffer(q, " WITH (%s)", indxinfo->options);
if (coninfo->condeferrable)
{
appendPQExpBuffer(q, " DEFERRABLE");
if (coninfo->condeferred)
appendPQExpBuffer(q, " INITIALLY DEFERRED");
}
appendPQExpBuffer(q, ";\n");
}
/* If the index is clustered, we need to record that. */
if (indxinfo->indisclustered)