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mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00

Enabled HA_NULL_IN_KEY support

This commit is contained in:
unknown
2004-08-31 10:19:10 +02:00
parent 2e86cdb179
commit c52a30b5df
5 changed files with 178 additions and 57 deletions

View File

@ -212,3 +212,48 @@ select count(*) from t1 where b = 1;
count(*)
1
drop table t1;
CREATE TABLE t1 (
a int unsigned NOT NULL PRIMARY KEY,
b int unsigned,
c int unsigned,
KEY bc(b,c)
) engine = ndb;
insert into t1 values(1,1,1),(2,NULL,2),(3,NULL,NULL),(4,4,NULL);
select * from t1 use index (bc) where b IS NULL;
a b c
3 NULL NULL
2 NULL 2
select * from t1 use index (bc)order by a;
a b c
1 1 1
2 NULL 2
3 NULL NULL
4 4 NULL
select * from t1 use index (bc) order by a;
a b c
1 1 1
2 NULL 2
3 NULL NULL
4 4 NULL
select * from t1 use index (PRIMARY) where b IS NULL order by a;
a b c
2 NULL 2
3 NULL NULL
select * from t1 use index (bc) where b IS NULL order by a;
a b c
2 NULL 2
3 NULL NULL
select * from t1 use index (bc) where b IS NULL and c IS NULL order by a;
a b c
3 NULL NULL
select * from t1 use index (bc) where b IS NULL and c = 2 order by a;
a b c
2 NULL 2
select * from t1 use index (bc) where b < 4 order by a;
a b c
1 1 1
select * from t1 use index (bc) where b IS NOT NULL order by a;
a b c
1 1 1
4 4 NULL
drop table t1;

View File

@ -109,6 +109,68 @@ a b c
3 4 6
drop table t3;
CREATE TABLE t1 (
pk int NOT NULL PRIMARY KEY,
a int unsigned,
UNIQUE KEY (a)
) engine=ndbcluster;
insert into t1 values (-1,NULL), (0,0), (1,NULL),(2,2),(3,NULL),(4,4);
select * from t1 order by pk;
pk a
-1 NULL
0 0
1 NULL
2 2
3 NULL
4 4
insert into t1 values (5,0);
ERROR 23000: Can't write, because of unique constraint, to table 't1'
select * from t1 order by pk;
pk a
-1 NULL
0 0
1 NULL
2 2
3 NULL
4 4
delete from t1 where a = 0;
insert into t1 values (5,0);
select * from t1 order by pk;
pk a
-1 NULL
1 NULL
2 2
3 NULL
4 4
5 0
CREATE TABLE t2 (
pk int NOT NULL PRIMARY KEY,
a int unsigned,
b tinyint NOT NULL,
c VARCHAR(10),
UNIQUE KEY si(a, c)
) engine=ndbcluster;
insert into t2 values (-1,1,17,NULL),(0,NULL,18,NULL),(1,3,19,'abc');
select * from t2 order by pk;
pk a b c
-1 1 17 NULL
0 NULL 18 NULL
1 3 19 abc
insert into t2 values(2,3,19,'abc');
ERROR 23000: Can't write, because of unique constraint, to table 't2'
select * from t2 order by pk;
pk a b c
-1 1 17 NULL
0 NULL 18 NULL
1 3 19 abc
delete from t2 where c IS NOT NULL;
insert into t2 values(2,3,19,'abc');
select * from t2 order by pk;
pk a b c
-1 1 17 NULL
0 NULL 18 NULL
2 3 19 abc
drop table t1, t2;
CREATE TABLE t1 (
cid smallint(5) unsigned NOT NULL default '0',
cv varchar(250) NOT NULL default '',
PRIMARY KEY (cid),

View File

@ -122,18 +122,22 @@ drop table t1;
# Indexing NULL values
#
#CREATE TABLE t1 (
# a int unsigned NOT NULL PRIMARY KEY,
# b int unsigned,
# c int unsigned,
# KEY bc(b,c)
#) engine = ndb;
CREATE TABLE t1 (
a int unsigned NOT NULL PRIMARY KEY,
b int unsigned,
c int unsigned,
KEY bc(b,c)
) engine = ndb;
#insert into t1 values(1,1,1),(2,NULL,2),(3,NULL,NULL),(4,4,NULL);
#select * from t1 use index (bc);
#select count(*) from t1 use index (bc);
#select count(*) from t1 use index (PRIMARY) where b IS NULL;
#select count(*) from t1 use index (bc) where b IS NULL;
#select count(*) from t1 use index (bc) where b IS NULL and c = 2;
#select count(*) from t1 use index (bc) where b IS NOT NULL;
#drop table t1;
insert into t1 values(1,1,1),(2,NULL,2),(3,NULL,NULL),(4,4,NULL);
select * from t1 use index (bc) where b IS NULL;
select * from t1 use index (bc)order by a;
select * from t1 use index (bc) order by a;
select * from t1 use index (PRIMARY) where b IS NULL order by a;
select * from t1 use index (bc) where b IS NULL order by a;
select * from t1 use index (bc) where b IS NULL and c IS NULL order by a;
select * from t1 use index (bc) where b IS NULL and c = 2 order by a;
select * from t1 use index (bc) where b < 4 order by a;
select * from t1 use index (bc) where b IS NOT NULL order by a;
drop table t1;

View File

@ -82,43 +82,43 @@ drop table t3;
# Indexes on NULL-able columns
#
#CREATE TABLE t1 (
# pk int NOT NULL PRIMARY KEY,
# a int unsigned,
# UNIQUE KEY (a)
#) engine=ndbcluster;
CREATE TABLE t1 (
pk int NOT NULL PRIMARY KEY,
a int unsigned,
UNIQUE KEY (a)
) engine=ndbcluster;
#insert into t1 values (-1,NULL), (0,0), (1,NULL),(2,2),(3,NULL),(4,4);
insert into t1 values (-1,NULL), (0,0), (1,NULL),(2,2),(3,NULL),(4,4);
#select * from t1 order by pk;
select * from t1 order by pk;
#--error 1169
#insert into t1 values (5,0);
#select * from t1 order by pk;
#delete from t1 where a = 0;
#insert into t1 values (5,0);
#select * from t1 order by pk;
--error 1169
insert into t1 values (5,0);
select * from t1 order by pk;
delete from t1 where a = 0;
insert into t1 values (5,0);
select * from t1 order by pk;
#CREATE TABLE t2 (
# pk int NOT NULL PRIMARY KEY,
# a int unsigned,
# b tinyint NOT NULL,
# c VARCHAR(10),
# UNIQUE KEY si(a, c)
#) engine=ndbcluster;
CREATE TABLE t2 (
pk int NOT NULL PRIMARY KEY,
a int unsigned,
b tinyint NOT NULL,
c VARCHAR(10),
UNIQUE KEY si(a, c)
) engine=ndbcluster;
#insert into t2 values (-1,1,17,NULL),(0,NULL,18,NULL),(1,3,19,'abc');
insert into t2 values (-1,1,17,NULL),(0,NULL,18,NULL),(1,3,19,'abc');
#select * from t2 order by pk;
select * from t2 order by pk;
#--error 1169
#insert into t2 values(2,3,19,'abc');
#select * from t2 order by pk;
#delete from t2 where c IS NOT NULL;
#insert into t2 values(2,3,19,'abc');
#select * from t2 order by pk;
--error 1169
insert into t2 values(2,3,19,'abc');
select * from t2 order by pk;
delete from t2 where c IS NOT NULL;
insert into t2 values(2,3,19,'abc');
select * from t2 order by pk;
#drop table t1, t2;
drop table t1, t2;
#
# More complex tables