1943
1943
auto int NULL NO PRI NULL auto_increment #
1944
1944
fld1 int unsigned NULL NO UNI NULL #
1945
1945
companynr tinyint(3) unsigned NULL NO NULL #
1946
fld3 char(30) latin1_swedish_ci NO MUL NULL #
1947
fld4 char(35) latin1_swedish_ci NO NULL #
1948
fld5 char(35) latin1_swedish_ci NO NULL #
1949
fld6 char(4) latin1_swedish_ci NO NULL #
1946
fld3 varchar(30) latin1_swedish_ci NO MUL NULL #
1947
fld4 varchar(35) latin1_swedish_ci NO NULL #
1948
fld5 varchar(35) latin1_swedish_ci NO NULL #
1949
fld6 varchar(4) latin1_swedish_ci NO NULL #
1950
1950
show full columns from t2 from test like 'f%';
1951
1951
Field Type Collation Null Key Default Extra Privileges Comment
1952
1952
fld1 int unsigned NULL NO UNI NULL #
1953
fld3 char(30) latin1_swedish_ci NO MUL NULL #
1954
fld4 char(35) latin1_swedish_ci NO NULL #
1955
fld5 char(35) latin1_swedish_ci NO NULL #
1956
fld6 char(4) latin1_swedish_ci NO NULL #
1953
fld3 varchar(30) latin1_swedish_ci NO MUL NULL #
1954
fld4 varchar(35) latin1_swedish_ci NO NULL #
1955
fld5 varchar(35) latin1_swedish_ci NO NULL #
1956
fld6 varchar(4) latin1_swedish_ci NO NULL #
1957
1957
show full columns from t2 from test like 's%';
1958
1958
Field Type Collation Null Key Default Extra Privileges Comment
1959
1959
drop table t4, t3, t2, t1;
3134
3134
t3.a=t2.a AND t3.c IN ('bb','ee') ;
3135
3135
id select_type table type possible_keys key key_len ref rows Extra
3136
3136
1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1
3137
1 SIMPLE t3 range PRIMARY,ci ci 5 NULL 6 Using where; Using index
3137
1 SIMPLE t3 range PRIMARY,ci ci 7 NULL 6 Using where; Using index
3138
3138
1 SIMPLE t2 ref si,ai ai 5 test.t3.a 1 Using where
3140
3140
SELECT t3.a FROM t1,t2 FORCE INDEX (si),t3