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>     case 'pgsql':
>       db_query("CREATE TABLE {checklist} (
>         cid integer NOT NULL,
>         tid integer NOT NULL DEFAULT '0',
>         nid integer NOT NULL DEFAULT '0',
>         uid integer NOT NULL DEFAULT '0',
>         checked integer NOT NULL DEFAULT '0',
>         PRIMARY KEY (cid));");
>       db_query("CREATE INDEX {checklist_tid_idx} ON {checklist}(tid);");
>       db_query("CREATE INDEX {checklist_nid_idx} ON {checklist}(nid);");
>       db_query("CREATE INDEX {checklist_uid_idx} ON {checklist}(uid);");
>       db_query("CREATE SEQUENCE {checklist_cid_seq};");
>       db_query("CREATE TABLE {checklist_node} (
>         nid integer NOT NULL DEFAULT '0',
>         weight smallint NOT NULL DEFAULT '0',
>         PRIMARY KEY (nid));");