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ef6c36c0c2
Allocate bigger default thread stack because of problems with glibc Fixed bug in UPDATE ... not_null_field=expression_that_returns_null Fixed bug in replication when using auto_increment and LOAD DATA INFILE include/my_global.h: Guard against compiling without -fno-exceptions include/my_pthread.h: Allocate bigger default thread stack because of problems with glibc mysql-test/r/null.result: Updated result mysql-test/t/null.test: Test of using UPDATE/INSERT with NULL on not null fields. sql/field_conv.cc: Fixed bug in UPDATE ... not_null_field=expression_that_returns_null sql/sql_load.cc: Fixed bug in replication when using auto_increment and LOAD DATA INFILE
112 lines
4.1 KiB
Plaintext
112 lines
4.1 KiB
Plaintext
select null,\N,isnull(null),isnull(1/0),isnull(1/0 = null),ifnull(null,1),ifnull(null,"TRUE"),ifnull("TRUE","ERROR"),1/0 is null,1 is not null;
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NULL NULL isnull(null) isnull(1/0) isnull(1/0 = null) ifnull(null,1) ifnull(null,"TRUE") ifnull("TRUE","ERROR") 1/0 is null 1 is not null
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NULL NULL 1 1 1 1 TRUE TRUE 1 1
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select 1 | NULL,1 & NULL,1+NULL,1-NULL;
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1 | NULL 1 & NULL 1+NULL 1-NULL
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NULL NULL NULL NULL
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select NULL=NULL,NULL<>NULL,IFNULL(NULL,1.1)+0,IFNULL(NULL,1) | 0;
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NULL=NULL NULL<>NULL IFNULL(NULL,1.1)+0 IFNULL(NULL,1) | 0
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NULL NULL 1 1
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select strcmp("a",NULL),(1<NULL)+0.0,NULL regexp "a",null like "a%","a%" like null;
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strcmp("a",NULL) (1<NULL)+0.0 NULL regexp "a" null like "a%" "a%" like null
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NULL NULL NULL NULL NULL
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select concat("a",NULL),replace(NULL,"a","b"),replace("string","i",NULL),replace("string",NULL,"i"),insert("abc",1,1,NULL),left(NULL,1);
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concat("a",NULL) replace(NULL,"a","b") replace("string","i",NULL) replace("string",NULL,"i") insert("abc",1,1,NULL) left(NULL,1)
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NULL NULL NULL NULL NULL NULL
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select repeat("a",0),repeat("ab",5+5),repeat("ab",-1),reverse(NULL);
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repeat("a",0) repeat("ab",5+5) repeat("ab",-1) reverse(NULL)
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abababababababababab NULL
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select field(NULL,"a","b","c");
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field(NULL,"a","b","c")
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0
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select 2 between null and 1,2 between 3 AND NULL,NULL between 1 and 2,2 between NULL and 3, 2 between 1 AND null;
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2 between null and 1 2 between 3 AND NULL NULL between 1 and 2 2 between NULL and 3 2 between 1 AND null
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0 0 NULL NULL NULL
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SELECT NULL AND NULL, 1 AND NULL, NULL AND 1, NULL OR NULL, 0 OR NULL, NULL OR 0;
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NULL AND NULL 1 AND NULL NULL AND 1 NULL OR NULL 0 OR NULL NULL OR 0
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NULL NULL NULL NULL NULL NULL
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SELECT (NULL OR NULL) IS NULL;
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(NULL OR NULL) IS NULL
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1
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select NULL AND 0, 0 and NULL;
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NULL AND 0 0 and NULL
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0 0
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select inet_ntoa(null),inet_aton(null),inet_aton("122.256"),inet_aton("122.226."),inet_aton("");
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inet_ntoa(null) inet_aton(null) inet_aton("122.256") inet_aton("122.226.") inet_aton("")
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NULL NULL NULL NULL NULL
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drop table if exists t1;
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create table t1 (x int);
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insert into t1 values (null);
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select * from t1 where x != 0;
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x
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drop table t1;
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CREATE TABLE t1 (
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indexed_field int default NULL,
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KEY indexed_field (indexed_field)
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);
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INSERT INTO t1 VALUES (NULL),(NULL);
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SELECT * FROM t1 WHERE indexed_field=NULL;
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indexed_field
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SELECT * FROM t1 WHERE indexed_field IS NULL;
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indexed_field
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NULL
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NULL
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SELECT * FROM t1 WHERE indexed_field<=>NULL;
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indexed_field
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NULL
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NULL
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DROP TABLE t1;
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create table t1 (a int, b int) type=myisam;
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insert into t1 values(20,null);
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select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on
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t2.b=t3.a;
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b ifnull(t2.b,"this is null")
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NULL this is null
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select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on
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t2.b=t3.a order by 1;
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b ifnull(t2.b,"this is null")
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NULL this is null
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insert into t1 values(10,null);
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select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on
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t2.b=t3.a order by 1;
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b ifnull(t2.b,"this is null")
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NULL this is null
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NULL this is null
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drop table t1;
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CREATE TABLE t1 (a varchar(16) NOT NULL, b smallint(6) NOT NULL, c datetime NOT NULL, d smallint(6) NOT NULL);
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INSERT INTO t1 SET a = "", d= "2003-01-14 03:54:55";
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UPDATE t1 SET d=1/NULL;
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UPDATE t1 SET d=NULL;
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INSERT INTO t1 (a) values (null);
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Column 'a' cannot be null
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INSERT INTO t1 (a) values (1/null);
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Column 'a' cannot be null
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INSERT INTO t1 (a) values (null),(null);
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INSERT INTO t1 (b) values (null);
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Column 'b' cannot be null
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INSERT INTO t1 (b) values (1/null);
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Column 'b' cannot be null
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INSERT INTO t1 (b) values (null),(null);
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INSERT INTO t1 (c) values (null);
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Column 'c' cannot be null
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INSERT INTO t1 (c) values (1/null);
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Column 'c' cannot be null
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INSERT INTO t1 (c) values (null),(null);
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INSERT INTO t1 (d) values (null);
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Column 'd' cannot be null
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INSERT INTO t1 (d) values (1/null);
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Column 'd' cannot be null
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INSERT INTO t1 (d) values (null),(null);
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select * from t1;
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a b c d
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0 0000-00-00 00:00:00 0
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0 0000-00-00 00:00:00 0
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0 0000-00-00 00:00:00 0
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0 0000-00-00 00:00:00 0
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0 0000-00-00 00:00:00 0
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0 0000-00-00 00:00:00 0
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0 0000-00-00 00:00:00 0
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0 0000-00-00 00:00:00 0
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0 0000-00-00 00:00:00 0
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drop table t1;
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