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- If number of records in table is 4, the calculated cost for using "index" and "range" become so close so that any rounding errors becomes visible. - Added one more record to the tables for heap test and expoect "range" to be selected - Decrease number of records in t1 for range and expect "index" to be choosen. mysql-test/r/heap.result: Add one more record to table t1 and expect explain to use "range" mysql-test/r/heap_btree.result: Add one more record to table t1 and expect explain to use "range" mysql-test/r/heap_hash.result: Add one more record to table t1 and expect explain to use "range" mysql-test/r/range.result: Update results mysql-test/t/heap.test: Add one more record to table t1 and expect explain to use "range" mysql-test/t/heap_btree.test: Add one more record to table t1 and expect explain to use "range" mysql-test/t/heap_hash.test: Add one more record to table t1 in order for optimizer to select use of "range" deterministic mysql-test/t/range.test: Remove one record from table t1 to avoid that cost for "index" and "range" are so close that rounding error become visible.
165 lines
5.5 KiB
Text
165 lines
5.5 KiB
Text
#
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# Test of heap tables.
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#
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--disable_warnings
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drop table if exists t1;
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--enable_warnings
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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;
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insert into t1 values(1,1),(2,2),(3,3),(4,4);
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delete from t1 where a=1 or a=0;
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#show table status like "t1";
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show keys from t1;
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select * from t1;
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select * from t1 where a=4;
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update t1 set b=5 where a=4;
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update t1 set b=b+1 where a>=3;
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replace t1 values (3,3);
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select * from t1;
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alter table t1 add c int not null, add key using BTREE (c,a);
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drop table t1;
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create table t1 (a int not null,b int not null, primary key using BTREE (a)) engine=heap comment="testing heaps";
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insert into t1 values(-2,-2),(-1,-1),(0,0),(1,1),(2,2),(3,3),(4,4);
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delete from t1 where a > -3;
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select * from t1;
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drop table t1;
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create table t1 (a int not null,b int not null, primary key using BTREE (a)) engine=heap comment="testing heaps";
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insert into t1 values(1,1),(2,2),(3,3),(4,4);
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alter table t1 modify a int not null auto_increment, engine=myisam, comment="new myisam table";
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#show table status like "t1";
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select * from t1;
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drop table t1;
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create table t1 (a int not null) engine=heap;
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insert into t1 values (869751),(736494),(226312),(802616),(728912);
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select * from t1 where a > 736494;
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alter table t1 add unique uniq_id using BTREE (a);
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select * from t1 where a > 736494;
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select * from t1 where a = 736494;
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select * from t1 where a=869751 or a=736494;
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select * from t1 where a in (869751,736494,226312,802616);
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alter table t1 engine=myisam;
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explain select * from t1 where a in (869751,736494,226312,802616);
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drop table t1;
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create table t1 (x int not null, y int not null, key x using BTREE (x,y), unique y using BTREE (y))
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engine=heap;
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insert into t1 values (1,1),(2,2),(1,3),(2,4),(2,5),(2,6);
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explain select * from t1 where x=1;
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select * from t1 where x=1;
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select * from t1,t1 as t2 where t1.x=t2.y;
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explain select * from t1,t1 as t2 where t1.x=t2.y;
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drop table t1;
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create table t1 (a int) engine=heap;
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insert into t1 values(1);
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select max(a) from t1;
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drop table t1;
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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;
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insert into t1 values(1,1),(1,2),(2,3),(1,3),(1,4),(1,5),(1,6);
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select * from t1 where a=1;
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insert into t1 values(1,1),(1,2),(2,3),(1,3),(1,4),(1,5),(1,6);
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select * from t1 where a=1;
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--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
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explain select * from t1 where a=1 order by a,b;
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--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
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explain select * from t1 where a=1 order by b;
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select * from t1 where b=1;
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--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
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explain select * from t1 where b=1;
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drop table t1;
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create table t1 (id int unsigned not null, primary key using BTREE (id)) engine=HEAP;
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insert into t1 values(1);
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select max(id) from t1;
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insert into t1 values(2);
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select max(id) from t1;
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replace into t1 values(1);
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drop table t1;
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create table t1 (n int) engine=heap;
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drop table t1;
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create table t1 (n int) engine=heap;
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drop table if exists t1;
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# Test of non unique index
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CREATE table t1(f1 int not null,f2 char(20) not
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null,index(f2)) engine=heap;
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INSERT into t1 set f1=12,f2="bill";
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INSERT into t1 set f1=13,f2="bill";
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INSERT into t1 set f1=14,f2="bill";
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INSERT into t1 set f1=15,f2="bill";
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INSERT into t1 set f1=16,f2="ted";
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INSERT into t1 set f1=12,f2="ted";
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INSERT into t1 set f1=12,f2="ted";
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INSERT into t1 set f1=12,f2="ted";
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INSERT into t1 set f1=12,f2="ted";
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delete from t1 where f2="bill";
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select * from t1;
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drop table t1;
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#
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# Test when using part key searches
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#
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create table t1 (btn char(10) not null, key using BTREE (btn)) engine=heap;
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insert into t1 values ("hello"),("hello"),("hello"),("hello"),("hello"),("a"),("b"),("c"),("d"),("e"),("f"),("g"),("h"),("i");
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explain select * from t1 where btn like "i%";
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--replace_column 9 #
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explain select * from t1 where btn like "h%";
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explain select * from t1 where btn like "a%";
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explain select * from t1 where btn like "b%";
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# For the following the BTREE MAY notice that there is no possible matches
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select * from t1 where btn like "ff%";
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select * from t1 where btn like " %";
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select * from t1 where btn like "q%";
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alter table t1 add column new_col char(1) not null, add key using BTREE (btn,new_col), drop key btn;
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update t1 set new_col=left(btn,1);
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explain select * from t1 where btn="a";
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explain select * from t1 where btn="a" and new_col="a";
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drop table t1;
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#
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# Test of NULL keys
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#
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CREATE TABLE t1 (
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a int default NULL,
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b int default NULL,
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KEY a using BTREE (a),
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UNIQUE b using BTREE (b)
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) engine=heap;
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INSERT INTO t1 VALUES (NULL,99),(99,NULL),(1,1),(2,2),(1,3);
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SELECT * FROM t1 WHERE a=NULL;
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explain SELECT * FROM t1 WHERE a IS NULL;
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SELECT * FROM t1 WHERE a<=>NULL;
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SELECT * FROM t1 WHERE b=NULL;
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explain SELECT * FROM t1 WHERE b IS NULL;
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SELECT * FROM t1 WHERE b<=>NULL;
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--error 1062
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INSERT INTO t1 VALUES (1,3);
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DROP TABLE t1;
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CREATE TABLE t1 (a int, b int, c int, key using BTREE (a, b, c)) engine=heap;
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INSERT INTO t1 VALUES (1, NULL, NULL), (1, 1, NULL), (1, NULL, 1);
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SELECT * FROM t1 WHERE a=1 and b IS NULL;
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SELECT * FROM t1 WHERE a=1 and c IS NULL;
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SELECT * FROM t1 WHERE a=1 and b IS NULL and c IS NULL;
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DROP TABLE t1;
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#
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# Test when deleting all rows
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#
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CREATE TABLE t1 (a int not null, primary key using BTREE (a)) engine=heap;
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INSERT into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11);
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DELETE from t1 where a < 100;
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SELECT * from t1;
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DROP TABLE t1;
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