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result The IN function aggregates result types of all expressions. It uses that type in comparison of left expression and expressions in right part. This approach works in most cases. But let's consider the case when the right part contains both strings and integers. In that case this approach may cause wrong results because all strings which do not start with a digit are evaluated as 0. CASE uses the same approach when a CASE expression is given thus it's also affected. The idea behind this fix is to make IN function to compare expressions with different result types differently. For example a string in the left part will be compared as string with strings specified in right part and will be converted to real for comparison to int or real items in the right part. A new function called collect_cmp_types() is added. It collects different result types for comparison of first item in the provided list with each other item in the list. The Item_func_in class now can refer up to 5 cmp_item objects: 1 for each result type for comparison purposes. cmp_item objects are allocated according to found result types. The comparison of the left expression with any right part expression is now based only on result types of these expressions. The Item_func_case class is modified in the similar way when a CASE expression is specified. Now it can allocate up to 5 cmp_item objects to compare CASE expression with WHEN expressions of different types. The comparison of the CASE expression with any WHEN expression now based only on result types of these expressions.
258 lines
7.5 KiB
Text
258 lines
7.5 KiB
Text
# Initialise
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--disable_warnings
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drop table if exists t1, t2;
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--enable_warnings
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#
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# test of IN (NULL)
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#
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select 1 in (1,2,3);
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select 10 in (1,2,3);
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select NULL in (1,2,3);
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select 1 in (1,NULL,3);
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select 3 in (1,NULL,3);
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select 10 in (1,NULL,3);
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select 1.5 in (1.5,2.5,3.5);
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select 10.5 in (1.5,2.5,3.5);
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select NULL in (1.5,2.5,3.5);
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select 1.5 in (1.5,NULL,3.5);
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select 3.5 in (1.5,NULL,3.5);
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select 10.5 in (1.5,NULL,3.5);
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CREATE TABLE t1 (a int, b int, c int);
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insert into t1 values (1,2,3), (1,NULL,3);
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select 1 in (a,b,c) from t1;
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select 3 in (a,b,c) from t1;
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select 10 in (a,b,c) from t1;
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select NULL in (a,b,c) from t1;
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drop table t1;
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CREATE TABLE t1 (a float, b float, c float);
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insert into t1 values (1.5,2.5,3.5), (1.5,NULL,3.5);
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select 1.5 in (a,b,c) from t1;
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select 3.5 in (a,b,c) from t1;
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select 10.5 in (a,b,c) from t1;
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drop table t1;
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CREATE TABLE t1 (a varchar(10), b varchar(10), c varchar(10));
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insert into t1 values ('A','BC','EFD'), ('A',NULL,'EFD');
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select 'A' in (a,b,c) from t1;
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select 'EFD' in (a,b,c) from t1;
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select 'XSFGGHF' in (a,b,c) from t1;
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drop table t1;
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CREATE TABLE t1 (field char(1));
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INSERT INTO t1 VALUES ('A'),(NULL);
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SELECT * from t1 WHERE field IN (NULL);
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SELECT * from t1 WHERE field NOT IN (NULL);
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SELECT * from t1 where field = field;
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SELECT * from t1 where field <=> field;
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DELETE FROM t1 WHERE field NOT IN (NULL);
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SELECT * FROM t1;
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drop table t1;
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create table t1 (id int(10) primary key);
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insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9);
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select * from t1 where id in (2,5,9);
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drop table t1;
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create table t1 (
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a char(1) character set latin1 collate latin1_general_ci,
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b char(1) character set latin1 collate latin1_swedish_ci,
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c char(1) character set latin1 collate latin1_danish_ci
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);
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insert into t1 values ('A','B','C');
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insert into t1 values ('a','c','c');
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--error 1267
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select * from t1 where a in (b);
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--error 1270
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select * from t1 where a in (b,c);
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--error 1271
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select * from t1 where 'a' in (a,b,c);
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select * from t1 where 'a' in (a);
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select * from t1 where a in ('a');
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select * from t1 where 'a' collate latin1_general_ci in (a,b,c);
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select * from t1 where 'a' collate latin1_bin in (a,b,c);
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select * from t1 where 'a' in (a,b,c collate latin1_bin);
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explain extended select * from t1 where 'a' in (a,b,c collate latin1_bin);
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drop table t1;
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set names utf8;
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create table t1 (a char(10) character set utf8 not null);
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insert into t1 values ('bbbb'),(_koi8r'<27><><EFBFBD><EFBFBD>'),(_latin1'<27><><EFBFBD><EFBFBD>');
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select a from t1 where a in ('bbbb',_koi8r'<27><><EFBFBD><EFBFBD>',_latin1'<27><><EFBFBD><EFBFBD>') order by a;
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drop table t1;
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# Bug#7834 Illegal mix of collations in IN operator
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create table t1 (a char(10) character set latin1 not null);
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insert into t1 values ('a'),('b'),('c');
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select a from t1 where a IN ('a','b','c') order by a;
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drop table t1;
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set names latin1;
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select '1.0' in (1,2);
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select 1 in ('1.0',2);
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select 1 in (1,'2.0');
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select 1 in ('1.0',2.0);
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select 1 in (1.0,'2.0');
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select 1 in ('1.1',2);
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select 1 in ('1.1',2.0);
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# Test case for bug #6365
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create table t1 (a char(2) character set binary);
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insert into t1 values ('aa'), ('bb');
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select * from t1 where a in (NULL, 'aa');
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drop table t1;
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# BUG#13419
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create table t1 (id int, key(id));
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insert into t1 values (1),(2),(3);
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select count(*) from t1 where id not in (1);
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select count(*) from t1 where id not in (1,2);
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drop table t1;
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# End of 4.1 tests
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#
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# Bug #11885: WHERE condition with NOT IN (one element)
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#
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CREATE TABLE t1 (a int PRIMARY KEY);
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INSERT INTO t1 VALUES (44), (45), (46);
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SELECT * FROM t1 WHERE a IN (45);
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SELECT * FROM t1 WHERE a NOT IN (0, 45);
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SELECT * FROM t1 WHERE a NOT IN (45);
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CREATE VIEW v1 AS SELECT * FROM t1 WHERE a NOT IN (45);
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SHOW CREATE VIEW v1;
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SELECT * FROM v1;
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DROP VIEW v1;
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DROP TABLE t1;
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# BUG#15872: Excessive memory consumption of range analysis of NOT IN
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create table t1 (a int);
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insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
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create table t2 (a int, filler char(200), key(a));
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insert into t2 select C.a*2, 'no' from t1 A, t1 B, t1 C;
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insert into t2 select C.a*2+1, 'yes' from t1 C;
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explain
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select * from t2 where a NOT IN (0, 2,4,6,8,10,12,14,16,18);
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select * from t2 where a NOT IN (0, 2,4,6,8,10,12,14,16,18);
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explain select * from t2 force index(a) where a NOT IN (2,2,2,2,2,2);
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explain select * from t2 force index(a) where a <> 2;
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drop table t2;
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#
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# Repeat the test for DATETIME
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#
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create table t2 (a datetime, filler char(200), key(a));
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insert into t2 select '2006-04-25 10:00:00' + interval C.a minute,
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'no' from t1 A, t1 B, t1 C where C.a % 2 = 0;
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insert into t2 select '2006-04-25 10:00:00' + interval C.a*2+1 minute,
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'yes' from t1 C;
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explain
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select * from t2 where a NOT IN (
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'2006-04-25 10:00:00','2006-04-25 10:02:00','2006-04-25 10:04:00',
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'2006-04-25 10:06:00', '2006-04-25 10:08:00');
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select * from t2 where a NOT IN (
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'2006-04-25 10:00:00','2006-04-25 10:02:00','2006-04-25 10:04:00',
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'2006-04-25 10:06:00', '2006-04-25 10:08:00');
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drop table t2;
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#
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# Repeat the test for CHAR(N)
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#
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create table t2 (a varchar(10), filler char(200), key(a));
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insert into t2 select 'foo', 'no' from t1 A, t1 B;
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insert into t2 select 'barbar', 'no' from t1 A, t1 B;
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insert into t2 select 'bazbazbaz', 'no' from t1 A, t1 B;
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insert into t2 values ('fon', '1'), ('fop','1'), ('barbaq','1'),
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('barbas','1'), ('bazbazbay', '1'),('zz','1');
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explain select * from t2 where a not in('foo','barbar', 'bazbazbaz');
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drop table t2;
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#
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# Repeat for DECIMAL
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#
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create table t2 (a decimal(10,5), filler char(200), key(a));
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insert into t2 select 345.67890, 'no' from t1 A, t1 B;
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insert into t2 select 43245.34, 'no' from t1 A, t1 B;
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insert into t2 select 64224.56344, 'no' from t1 A, t1 B;
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insert into t2 values (0, '1'), (22334.123,'1'), (33333,'1'),
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(55555,'1'), (77777, '1');
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explain
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select * from t2 where a not in (345.67890, 43245.34, 64224.56344);
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select * from t2 where a not in (345.67890, 43245.34, 64224.56344);
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drop table t2;
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# Try a very big IN-list
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create table t2 (a int, key(a), b int);
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insert into t2 values (1,1),(2,2);
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set @cnt= 1;
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set @str="update t2 set b=1 where a not in (";
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select count(*) from (
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select @str:=concat(@str, @cnt:=@cnt+1, ",")
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from t1 A, t1 B, t1 C, t1 D) Z;
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set @str:=concat(@str, "10000)");
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select substr(@str, 1, 50);
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prepare s from @str;
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execute s;
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deallocate prepare s;
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set @str=NULL;
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drop table t2;
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drop table t1;
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# BUG#19618: Crash in range optimizer for
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# "unsigned_keypart NOT IN(negative_number,...)"
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# (introduced in fix BUG#15872)
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create table t1 (
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some_id smallint(5) unsigned,
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key (some_id)
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);
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insert into t1 values (1),(2);
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select some_id from t1 where some_id not in(2,-1);
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select some_id from t1 where some_id not in(-4,-1,-4);
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select some_id from t1 where some_id not in(-4,-1,3423534,2342342);
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drop table t1;
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#
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# Bug#18360: Type aggregation for IN and CASE may lead to a wrong result
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#
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create table t1(f1 char(1));
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insert into t1 values ('a'),('b'),('1');
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select f1 from t1 where f1 in ('a',1);
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select f1, case f1 when 'a' then '+' when 1 then '-' end from t1;
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create index t1f1_idx on t1(f1);
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select f1 from t1 where f1 in ('a',1);
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explain select f1 from t1 where f1 in ('a',1);
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select f1 from t1 where f1 in ('a','b');
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explain select f1 from t1 where f1 in ('a','b');
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select f1 from t1 where f1 in (2,1);
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explain select f1 from t1 where f1 in (2,1);
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create table t2(f2 int, index t2f2(f2));
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insert into t2 values(0),(1),(2);
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select f2 from t2 where f2 in ('a',2);
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explain select f2 from t2 where f2 in ('a',2);
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select f2 from t2 where f2 in ('a','b');
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explain select f2 from t2 where f2 in ('a','b');
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select f2 from t2 where f2 in (1,'b');
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explain select f2 from t2 where f2 in (1,'b');
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drop table t1, t2;
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