heap_btree.test
上传用户:romrleung
上传日期:2022-05-23
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文件大小:5k
- #
- # Test of heap tables.
- #
- --disable_warnings
- drop table if exists t1;
- --enable_warnings
- create table t1 (a int not null,b int not null, primary key using BTREE (a)) engine=heap comment="testing heaps" avg_row_length=100 min_rows=1 max_rows=100;
- insert into t1 values(1,1),(2,2),(3,3),(4,4);
- delete from t1 where a=1 or a=0;
- #show table status like "t1";
- show keys from t1;
- select * from t1;
- select * from t1 where a=4;
- update t1 set b=5 where a=4;
- update t1 set b=b+1 where a>=3;
- replace t1 values (3,3);
- select * from t1;
- alter table t1 add c int not null, add key using BTREE (c,a);
- drop table t1;
- create table t1 (a int not null,b int not null, primary key using BTREE (a)) engine=heap comment="testing heaps";
- insert into t1 values(-2,-2),(-1,-1),(0,0),(1,1),(2,2),(3,3),(4,4);
- delete from t1 where a > -3;
- select * from t1;
- drop table t1;
- create table t1 (a int not null,b int not null, primary key using BTREE (a)) engine=heap comment="testing heaps";
- insert into t1 values(1,1),(2,2),(3,3),(4,4);
- alter table t1 modify a int not null auto_increment, engine=myisam, comment="new myisam table";
- #show table status like "t1";
- select * from t1;
- drop table t1;
- create table t1 (a int not null) engine=heap;
- insert into t1 values (869751),(736494),(226312),(802616);
- select * from t1 where a > 736494;
- alter table t1 add unique uniq_id using BTREE (a);
- select * from t1 where a > 736494;
- select * from t1 where a = 736494;
- select * from t1 where a=869751 or a=736494;
- select * from t1 where a in (869751,736494,226312,802616);
- alter table t1 engine=myisam;
- explain select * from t1 where a in (869751,736494,226312,802616);
- drop table t1;
- create table t1 (x int not null, y int not null, key x using BTREE (x,y), unique y using BTREE (y))
- engine=heap;
- insert into t1 values (1,1),(2,2),(1,3),(2,4),(2,5),(2,6);
- explain select * from t1 where x=1;
- select * from t1 where x=1;
- select * from t1,t1 as t2 where t1.x=t2.y;
- explain select * from t1,t1 as t2 where t1.x=t2.y;
- drop table t1;
- create table t1 (a int) engine=heap;
- insert into t1 values(1);
- select max(a) from t1;
- drop table t1;
- CREATE TABLE t1 ( a int not null default 0, b int not null default 0, key using BTREE (a,b), key using BTREE (b) ) ENGINE=HEAP;
- insert into t1 values(1,1),(1,2),(2,3),(1,3),(1,4),(1,5),(1,6);
- select * from t1 where a=1;
- insert into t1 values(1,1),(1,2),(2,3),(1,3),(1,4),(1,5),(1,6);
- select * from t1 where a=1;
- --replace_result 0 x 1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 x 9 x 10 x 11 x 12 x 13 x 14 x
- explain select * from t1 where a=1 order by a,b;
- --replace_result 0 x 1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 x 9 x 10 x 11 x 12 x 13 x 14 x
- explain select * from t1 where a=1 order by b;
- select * from t1 where b=1;
- --replace_result 0 x 1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 x 9 x 10 x 11 x 12 x 13 x 14 x
- explain select * from t1 where b=1;
- drop table t1;
- create table t1 (id int unsigned not null, primary key using BTREE (id)) engine=HEAP;
- insert into t1 values(1);
- select max(id) from t1;
- insert into t1 values(2);
- select max(id) from t1;
- replace into t1 values(1);
- drop table t1;
- create table t1 (n int) engine=heap;
- drop table t1;
- create table t1 (n int) engine=heap;
- drop table if exists t1;
- # Test of non unique index
- CREATE table t1(f1 int not null,f2 char(20) not
- null,index(f2)) engine=heap;
- INSERT into t1 set f1=12,f2="bill";
- INSERT into t1 set f1=13,f2="bill";
- INSERT into t1 set f1=14,f2="bill";
- INSERT into t1 set f1=15,f2="bill";
- INSERT into t1 set f1=16,f2="ted";
- INSERT into t1 set f1=12,f2="ted";
- INSERT into t1 set f1=12,f2="ted";
- INSERT into t1 set f1=12,f2="ted";
- INSERT into t1 set f1=12,f2="ted";
- delete from t1 where f2="bill";
- select * from t1;
- drop table t1;
- #
- # Test when using part key searches
- #
- create table t1 (btn char(10) not null, key using BTREE (btn)) engine=heap;
- insert into t1 values ("hello"),("hello"),("hello"),("hello"),("hello"),("a"),("b"),("c"),("d"),("e"),("f"),("g"),("h"),("i");
- explain select * from t1 where btn like "i%";
- --replace_column 9 #
- explain select * from t1 where btn like "h%";
- explain select * from t1 where btn like "a%";
- explain select * from t1 where btn like "b%";
- # For the following the BTREE MAY notice that there is no possible matches
- select * from t1 where btn like "ff%";
- select * from t1 where btn like " %";
- select * from t1 where btn like "q%";
- alter table t1 add column new_col char(1) not null, add key using BTREE (btn,new_col), drop key btn;
- update t1 set new_col=left(btn,1);
- explain select * from t1 where btn="a";
- explain select * from t1 where btn="a" and new_col="a";
- drop table t1;
- #
- # Test of NULL keys
- #
- CREATE TABLE t1 (
- a int default NULL,
- b int default NULL,
- KEY a using BTREE (a),
- UNIQUE b using BTREE (b)
- ) engine=heap;
- INSERT INTO t1 VALUES (NULL,99),(99,NULL),(1,1),(2,2),(1,3);
- SELECT * FROM t1 WHERE a=NULL;
- explain SELECT * FROM t1 WHERE a IS NULL;
- SELECT * FROM t1 WHERE a<=>NULL;
- SELECT * FROM t1 WHERE b=NULL;
- explain SELECT * FROM t1 WHERE b IS NULL;
- SELECT * FROM t1 WHERE b<=>NULL;
- --error 1062
- INSERT INTO t1 VALUES (1,3);
- DROP TABLE t1;
- CREATE TABLE t1 (a int, b int, c int, key using BTREE (a, b, c)) engine=heap;
- INSERT INTO t1 VALUES (1, NULL, NULL), (1, 1, NULL), (1, NULL, 1);
- SELECT * FROM t1 WHERE a=1 and b IS NULL;
- SELECT * FROM t1 WHERE a=1 and c IS NULL;
- SELECT * FROM t1 WHERE a=1 and b IS NULL and c IS NULL;
- DROP TABLE t1;
- #
- # Test when deleting all rows
- #
- CREATE TABLE t1 (a int not null, primary key using BTREE (a)) engine=heap;
- INSERT into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11);
- DELETE from t1 where a < 100;
- SELECT * from t1;
- DROP TABLE t1;
- # End of 4.1 tests