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merging

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bell@sanja.is.com.ua
2002-10-04 14:15:59 +03:00
parent 61488a7b98 2883c3a8cc
commit 199f667c19
49 changed files with 1329 additions and 834 deletions
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12
mysql-test/r/merge.result
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@ -34,11 +34,11 @@ insert into t2 select NULL,message from t1;
insert into t1 select NULL,message from t2;
create table t3 (a int not null, b char(20), key(a)) type=MERGE UNION=(test.t1,test.t2);
explain select * from t3 where a < 10;
table type possible_keys key key_len ref rows Extra
t3 range a a 4 NULL 10 where used
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 range a a 4 NULL 10 where used
explain select * from t3 where a > 10 and a < 20;
table type possible_keys key key_len ref rows Extra
t3 range a a 4 NULL 10 where used
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 range a a 4 NULL 10 where used
select * from t3 where a = 10;
a b
10 Testing
@ -84,8 +84,8 @@ a b
19 Testing
19 Testing
explain select a from t3 order by a desc limit 10;
table type possible_keys key key_len ref rows Extra
t3 index NULL a 4 NULL 1131 Using index
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 index NULL a 4 NULL 1131 Using index
select a from t3 order by a desc limit 10;
a
699