create_index.sql
上传用户:blenddy
上传日期:2007-01-07
资源大小:6495k
文件大小:3k
- --
- -- CREATE ancillary data structures (i.e. indices)
- --
- --
- -- BTREE
- --
- CREATE INDEX onek_unique1 ON onek USING btree(unique1 int4_ops);
- CREATE INDEX onek_unique2 ON onek USING btree(unique2 int4_ops);
- CREATE INDEX onek_hundred ON onek USING btree(hundred int4_ops);
- CREATE INDEX onek_stringu1 ON onek USING btree(stringu1 name_ops);
- CREATE INDEX tenk1_unique1 ON tenk1 USING btree(unique1 int4_ops);
- CREATE INDEX tenk1_unique2 ON tenk1 USING btree(unique2 int4_ops);
- CREATE INDEX tenk1_hundred ON tenk1 USING btree(hundred int4_ops);
- CREATE INDEX tenk2_unique1 ON tenk2 USING btree(unique1 int4_ops);
- CREATE INDEX tenk2_unique2 ON tenk2 USING btree(unique2 int4_ops);
- CREATE INDEX tenk2_hundred ON tenk2 USING btree(hundred int4_ops);
- CREATE INDEX rix ON road USING btree (name text_ops);
- CREATE INDEX iix ON ihighway USING btree (name text_ops);
- CREATE INDEX six ON shighway USING btree (name text_ops);
- --
- -- BTREE ascending/descending cases
- --
- -- we load int4/text from pure descending data (each key is a new
- -- low key) and name/f8 from pure ascending data (each key is a new
- -- high key). we had a bug where new low keys would sometimes be
- -- "lost".
- --
- CREATE INDEX bt_i4_index ON bt_i4_heap USING btree (seqno int4_ops);
- CREATE INDEX bt_name_index ON bt_name_heap USING btree (seqno name_ops);
- CREATE INDEX bt_txt_index ON bt_txt_heap USING btree (seqno text_ops);
- CREATE INDEX bt_f8_index ON bt_f8_heap USING btree (seqno float8_ops);
- --
- -- BTREE partial indices
- -- partial indices are not supported in PostgreSQL
- --
- --CREATE INDEX onek2_u1_prtl ON onek2 USING btree(unique1 int4_ops)
- -- where onek2.unique1 < 20 or onek2.unique1 > 980;
- --CREATE INDEX onek2_u2_prtl ON onek2 USING btree(unique2 int4_ops)
- -- where onek2.stringu1 < 'B';
- -- EXTEND INDEX onek2_u2_prtl where onek2.stringu1 < 'C';
- -- EXTEND INDEX onek2_u2_prtl;
- -- CREATE INDEX onek2_stu1_prtl ON onek2 USING btree(stringu1 name_ops)
- -- where onek2.stringu1 >= 'J' and onek2.stringu1 < 'K';
- --
- -- RTREE
- --
- -- rtrees use a quadratic page-splitting algorithm that takes a
- -- really, really long time. we don't test all rtree opclasses
- -- in the regression test (we check them USING the sequoia 2000
- -- benchmark).
- --
- CREATE INDEX rect2ind ON fast_emp4000 USING rtree (home_base bigbox_ops);
- --
- -- HASH
- --
- CREATE INDEX hash_i4_index ON hash_i4_heap USING hash (random int4_ops);
- CREATE INDEX hash_name_index ON hash_name_heap USING hash (random name_ops);
- CREATE INDEX hash_txt_index ON hash_txt_heap USING hash (random text_ops);
- CREATE INDEX hash_f8_index ON hash_f8_heap USING hash (random float8_ops);
- -- CREATE INDEX hash_ovfl_index ON hash_ovfl_heap USING hash (x int4_ops);