65 lines
1.9 KiB
PL/PgSQL
65 lines
1.9 KiB
PL/PgSQL
begin;
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select pgam.oid from pg_am pgam
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where amname = 'btree';
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--
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-- Temporary oper table
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--
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-- drop table tmp_op;
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create table tmp_op ( oprname name, opi int2);
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--
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-- Fill in this table
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--
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insert into tmp_op values('<','1');
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insert into tmp_op values('<=','2');
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insert into tmp_op values('=','3');
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insert into tmp_op values('>=','4');
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insert into tmp_op values('>','5');
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select * from tmp_op;
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--
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-- Add record to the pg_opclass
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--
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DELETE FROM pg_opclass WHERE opcname = 'ipaddr_ops';
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INSERT INTO pg_opclass (opcname,opcdeftype)
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select 'ipaddr_ops',oid from pg_type where typname = 'ipaddr';
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--
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-- And determine oid
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--
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SELECT opc.oid,opc.opcname
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FROM pg_opclass opc
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WHERE opc.opcname = 'ipaddr_ops';
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--
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SELECT o.oid AS opoid, o.oprname
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INTO TABLE ipaddr_tmp
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FROM pg_operator o, pg_type t
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WHERE o.oprleft = t.oid and o.oprright = t.oid and t.typname = 'ipaddr';
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SELECT * FROM ipaddr_tmp;
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--
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INSERT INTO pg_amop (amopid, amopclaid, amopopr, amopstrategy, amopselect, amopnpages)
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SELECT am.oid,opcl.oid,c.opoid,t.opi,'btreesel'::regproc, 'btreenpage'::regproc
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FROM pg_am am, pg_opclass opcl, ipaddr_tmp c, tmp_op t
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WHERE t.oprname = c.oprname
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and amname = 'btree'
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and opcname = 'ipaddr_ops';
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--
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SELECT prc.oid, prc.proname FROM pg_proc prc
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WHERE prc.proname = 'ipaddr_cmp';
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--
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INSERT INTO pg_amproc (amid, amopclaid, amproc, amprocnum)
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SELECT pgam.oid, opc.oid,prc.oid,'1'::int2
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FROM pg_am pgam,
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pg_opclass opc,
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pg_proc prc
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WHERE prc.proname = 'ipaddr_cmp'
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and pgam.amname = 'btree'
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and opc.opcname = 'ipaddr_ops';
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drop table tmp_op;
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DROP TABLE ipaddr_tmp;
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COMMIT;
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-- *****************************************************************
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-- * Now you should test this by running test1.sql and test2.sql *
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-- * In test2, be sure the 'explain' operator show you *
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-- * search by index in the last line of output *
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-- *****************************************************************
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