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Implement SQL-standard WITH clauses, including WITH RECURSIVE.

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There are some unimplemented aspects: recursive queries must use UNION ALL
(should allow UNION too), and we don't have SEARCH or CYCLE clauses.
These might or might not get done for 8.4, but even without them it's a
pretty useful feature.

There are also a couple of small loose ends and definitional quibbles,
which I'll send a memo about to pgsql-hackers shortly.  But let's land
the patch now so we can get on with other development.

Yoshiyuki Asaba, with lots of help from Tatsuo Ishii and Tom Lane
This commit is contained in:
Tom Lane
2008-10-04 21:56:55 +00:00
parent 607b2be7bb
commit 44d5be0e53
77 changed files with 5893 additions and 313 deletions
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8
src/bin/psql/tab-complete.c
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@@ -3,7 +3,7 @@
*
* Copyright (c) 2000-2008, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/bin/psql/tab-complete.c,v 1.172 2008/09/08 00:47:40 tgl Exp $
* $PostgreSQL: pgsql/src/bin/psql/tab-complete.c,v 1.173 2008/10/04 21:56:54 tgl Exp $
*/
/*----------------------------------------------------------------------
@@ -615,7 +615,7 @@ psql_completion(char *text, int start, int end)
"GRANT", "INSERT", "LISTEN", "LOAD", "LOCK", "MOVE", "NOTIFY", "PREPARE",
"REASSIGN", "REINDEX", "RELEASE", "RESET", "REVOKE", "ROLLBACK",
"SAVEPOINT", "SELECT", "SET", "SHOW", "START", "TRUNCATE", "UNLISTEN",
"UPDATE", "VACUUM", "VALUES", NULL
"UPDATE", "VACUUM", "VALUES", "WITH", NULL
};
static const char *const backslash_commands[] = {
@@ -2044,6 +2044,10 @@ psql_completion(char *text, int start, int end)
pg_strcasecmp(prev2_wd, "ANALYZE") == 0))
COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
/* WITH [RECURSIVE] */
else if (pg_strcasecmp(prev_wd, "WITH") == 0)
COMPLETE_WITH_CONST("RECURSIVE");
/* ANALYZE */
/* If the previous word is ANALYZE, produce list of tables */
else if (pg_strcasecmp(prev_wd, "ANALYZE") == 0)