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Add pg_upgrade C comment about why we check all relkinds for regtypes.

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This commit is contained in:
Bruce Momjian 2012-01-19 16:04:34 -05:00
parent cc53a1e7cc
commit ecf7a2ea38
1 changed files with 5 additions and 0 deletions
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contrib/pg_upgrade/check.c
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@ -644,6 +644,11 @@ check_for_reg_data_type_usage(ClusterInfo *cluster)
DbInfo *active_db = &cluster->dbarr.dbs[dbnum]; DbInfo *active_db = &cluster->dbarr.dbs[dbnum];
PGconn *conn = connectToServer(cluster, active_db->db_name); PGconn *conn = connectToServer(cluster, active_db->db_name);
/*
* While several relkinds don't store any data, e.g. views, they
* can be used to define data types of other columns, so we
* check all relkinds.
*/
res = executeQueryOrDie(conn, res = executeQueryOrDie(conn,
"SELECT n.nspname, c.relname, a.attname " "SELECT n.nspname, c.relname, a.attname "
"FROM pg_catalog.pg_class c, " "FROM pg_catalog.pg_class c, "