mirror of
https://github.com/MariaDB/server.git
synced 2025-10-24 07:13:33 +03:00
db7561ecf8
CAST() now produces warnings when casting a wrong INTEGER or CHAR values. This also applies to implicite string to number casts. (Bug #5912) ALTER TABLE now fails in STRICT mode if it generates warnings. Inserting a zero date in a DATE, DATETIME or TIMESTAMP column during TRADITIONAL mode now produces an error. (Bug #5933) mysql-test/r/bigint.result: New warning added mysql-test/r/cast.result: Added testing of wrong CAST's of strings to numbers and numbers to strings mysql-test/r/create.result: Added test for wrong default values (#5902) mysql-test/r/func_if.result: Changed tests to produce less warnings mysql-test/r/func_misc.result: New warning mysql-test/r/func_str.result: Added missing drop table Changed test to produce less warnings New warnings mysql-test/r/ndb_index_unique.result: Removed wrong default usage mysql-test/r/ps_1general.result: Changed tests to produce less warnings mysql-test/r/row.result: New warnings mysql-test/r/rpl_session_var.result: Changed tests to produce less warnings mysql-test/r/strict.result: New tests for CAST() and zero date handling mysql-test/r/subselect.result: Changed tests to produce less warnings mysql-test/r/type_ranges.result: Changed tests to produce less warnings mysql-test/t/cast.test: Added testing of wrong CAST's of strings to numbers and numbers to strings mysql-test/t/create.test: Added test for wrong default values (#5902) mysql-test/t/func_if.test: Changed tests to produce less warnings mysql-test/t/func_str.test: Added missing drop table Changed test to produce less warnings New warnings mysql-test/t/ndb_index_unique.test: Removed wrong default usage mysql-test/t/ps_1general.test: Changed tests to produce less warnings mysql-test/t/rpl_session_var.test: Changed tests to produce less warnings mysql-test/t/strict.test: New tests for CAST() and zero date handling mysql-test/t/subselect.test: Changed tests to produce less warnings mysql-test/t/type_ranges.test: Changed tests to produce less warnings sql/Makefile.am: Added new include file sql/field.cc: Added warnings for zero dates for DATE, DATETIME and TIMESTAMP Moved Field_blob::max_length() to a more appropriate position Changed type for 'level' in set_warning() to avoid casts sql/field.h: Changed type for 'level' in set_warning() to avoid casts sql/field_conv.cc: Copy date and datetime fields through string in 'traditional' mode to detect zero dates sql/item.cc: Removed compiler warnings Give warnings for wrong CAST of strings -> number sql/item.h: Moved Item_string::val_real() and ::val_int() to item.cc sql/item_row.cc: Better detection of null values (which doesn't produce warnings) sql/item_sum.cc: Better detection of null values (which doesn't produce warnings) sql/item_timefunc.cc: Give warnings for wrong CAST of number -> string sql/my_decimal.cc: Fixed typo in comment sql/mysql_priv.h: Removed prototype for static function Moved defines for error handling to sql_error.h (to be able to use these in field.h) sql/mysqld.cc: Simplify code sql/sql_class.h: Moved to sql_error.h sql/sql_load.cc: Removed wrong cast sql/sql_parse.cc: Fixed wrong printf() sql/sql_table.cc: Made mysql_prepare_table() static Changed references to pointers to make code more readable ALTER TABLE now aborts if one gets warnings in STRICT mode sql/time.cc: Fixed possible wrong call sql/unireg.cc: Removed one call to current_thd Give errors if one uses a wrong DEFAULT value
797 lines
40 KiB
Plaintext
797 lines
40 KiB
Plaintext
drop table if exists t1,t2;
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set names latin1;
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select 'hello',"'hello'",'""hello""','''h''e''l''l''o''',"hel""lo",'hel\'lo';
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hello 'hello' ""hello"" 'h'e'l'l'o' hel"lo hel'lo
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hello 'hello' ""hello"" 'h'e'l'l'o' hel"lo hel'lo
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select 'hello' 'monty';
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hello
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hellomonty
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select length('\n\t\r\b\0\_\%\\');
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length('\n\t\r\b\0\_\%\\')
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10
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select bit_length('\n\t\r\b\0\_\%\\');
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bit_length('\n\t\r\b\0\_\%\\')
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80
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select char_length('\n\t\r\b\0\_\%\\');
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char_length('\n\t\r\b\0\_\%\\')
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10
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select length(_latin1'\n\t\n\b\0\\_\\%\\');
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length(_latin1'\n\t\n\b\0\\_\\%\\')
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10
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select concat('monty',' was here ','again'),length('hello'),char(ascii('h')),ord('h');
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concat('monty',' was here ','again') length('hello') char(ascii('h')) ord('h')
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monty was here again 5 h 104
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select locate('he','hello'),locate('he','hello',2),locate('lo','hello',2) ;
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locate('he','hello') locate('he','hello',2) locate('lo','hello',2)
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1 0 4
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select instr('hello','HE'), instr('hello',binary 'HE'), instr(binary 'hello','HE');
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instr('hello','HE') instr('hello',binary 'HE') instr(binary 'hello','HE')
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1 0 0
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select position(binary 'll' in 'hello'),position('a' in binary 'hello');
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position(binary 'll' in 'hello') position('a' in binary 'hello')
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3 0
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select left('hello',2),right('hello',2),substring('hello',2,2),mid('hello',1,5) ;
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left('hello',2) right('hello',2) substring('hello',2,2) mid('hello',1,5)
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he lo el hello
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select concat('',left(right(concat('what ',concat('is ','happening')),9),4),'',substring('monty',5,1)) ;
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concat('',left(right(concat('what ',concat('is ','happening')),9),4),'',substring('monty',5,1))
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happy
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select substring_index('www.tcx.se','.',-2),substring_index('www.tcx.se','.',1);
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substring_index('www.tcx.se','.',-2) substring_index('www.tcx.se','.',1)
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tcx.se www
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select substring_index('www.tcx.se','tcx',1),substring_index('www.tcx.se','tcx',-1);
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substring_index('www.tcx.se','tcx',1) substring_index('www.tcx.se','tcx',-1)
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www. .se
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select substring_index('.tcx.se','.',-2),substring_index('.tcx.se','.tcx',-1);
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substring_index('.tcx.se','.',-2) substring_index('.tcx.se','.tcx',-1)
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tcx.se .se
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select concat(':',ltrim(' left '),':',rtrim(' right '),':');
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concat(':',ltrim(' left '),':',rtrim(' right '),':')
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:left : right:
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select concat(':',trim(leading from ' left '),':',trim(trailing from ' right '),':');
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concat(':',trim(leading from ' left '),':',trim(trailing from ' right '),':')
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:left : right:
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select concat(':',trim(LEADING FROM ' left'),':',trim(TRAILING FROM ' right '),':');
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concat(':',trim(LEADING FROM ' left'),':',trim(TRAILING FROM ' right '),':')
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:left: right:
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select concat(':',trim(' m '),':',trim(BOTH FROM ' y '),':',trim('*' FROM '*s*'),':');
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concat(':',trim(' m '),':',trim(BOTH FROM ' y '),':',trim('*' FROM '*s*'),':')
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:m:y:s:
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select concat(':',trim(BOTH 'ab' FROM 'ababmyabab'),':',trim(BOTH '*' FROM '***sql'),':');
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concat(':',trim(BOTH 'ab' FROM 'ababmyabab'),':',trim(BOTH '*' FROM '***sql'),':')
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:my:sql:
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select concat(':',trim(LEADING '.*' FROM '.*my'),':',trim(TRAILING '.*' FROM 'sql.*.*'),':');
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concat(':',trim(LEADING '.*' FROM '.*my'),':',trim(TRAILING '.*' FROM 'sql.*.*'),':')
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:my:sql:
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select TRIM("foo" FROM "foo"), TRIM("foo" FROM "foook"), TRIM("foo" FROM "okfoo");
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TRIM("foo" FROM "foo") TRIM("foo" FROM "foook") TRIM("foo" FROM "okfoo")
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ok ok
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select concat_ws(', ','monty','was here','again');
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concat_ws(', ','monty','was here','again')
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monty, was here, again
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select concat_ws(NULL,'a'),concat_ws(',',NULL,'');
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concat_ws(NULL,'a') concat_ws(',',NULL,'')
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NULL
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select concat_ws(',','',NULL,'a');
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concat_ws(',','',NULL,'a')
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,a
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SELECT CONCAT('"',CONCAT_WS('";"',repeat('a',60),repeat('b',60),repeat('c',60),repeat('d',100)), '"');
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CONCAT('"',CONCAT_WS('";"',repeat('a',60),repeat('b',60),repeat('c',60),repeat('d',100)), '"')
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb";"cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc";"dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd"
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select insert('txs',2,1,'hi'),insert('is ',4,0,'a'),insert('txxxxt',2,4,'es');
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insert('txs',2,1,'hi') insert('is ',4,0,'a') insert('txxxxt',2,4,'es')
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this is a test
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select replace('aaaa','a','b'),replace('aaaa','aa','b'),replace('aaaa','a','bb'),replace('aaaa','','b'),replace('bbbb','a','c');
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replace('aaaa','a','b') replace('aaaa','aa','b') replace('aaaa','a','bb') replace('aaaa','','b') replace('bbbb','a','c')
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bbbb bb bbbbbbbb aaaa bbbb
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select replace(concat(lcase(concat('THIS',' ','IS',' ','A',' ')),ucase('false'),' ','test'),'FALSE','REAL') ;
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replace(concat(lcase(concat('THIS',' ','IS',' ','A',' ')),ucase('false'),' ','test'),'FALSE','REAL')
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this is a REAL test
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select soundex(''),soundex('he'),soundex('hello all folks'),soundex('#3556 in bugdb');
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soundex('') soundex('he') soundex('hello all folks') soundex('#3556 in bugdb')
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H000 H4142 I51231
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select 'mood' sounds like 'mud';
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'mood' sounds like 'mud'
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1
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select 'Glazgo' sounds like 'Liverpool';
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'Glazgo' sounds like 'Liverpool'
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0
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select null sounds like 'null';
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null sounds like 'null'
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NULL
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select 'null' sounds like null;
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'null' sounds like null
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NULL
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select null sounds like null;
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null sounds like null
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NULL
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select md5('hello');
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md5('hello')
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5d41402abc4b2a76b9719d911017c592
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select crc32("123");
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crc32("123")
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2286445522
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select sha('abc');
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sha('abc')
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a9993e364706816aba3e25717850c26c9cd0d89d
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select sha1('abc');
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sha1('abc')
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a9993e364706816aba3e25717850c26c9cd0d89d
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select aes_decrypt(aes_encrypt('abc','1'),'1');
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aes_decrypt(aes_encrypt('abc','1'),'1')
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abc
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select aes_decrypt(aes_encrypt('abc','1'),1);
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aes_decrypt(aes_encrypt('abc','1'),1)
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abc
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select aes_encrypt(NULL,"a");
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aes_encrypt(NULL,"a")
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NULL
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select aes_encrypt("a",NULL);
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aes_encrypt("a",NULL)
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NULL
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select aes_decrypt(NULL,"a");
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aes_decrypt(NULL,"a")
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NULL
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select aes_decrypt("a",NULL);
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aes_decrypt("a",NULL)
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NULL
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select aes_decrypt("a","a");
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aes_decrypt("a","a")
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NULL
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select aes_decrypt(aes_encrypt("","a"),"a");
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aes_decrypt(aes_encrypt("","a"),"a")
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select repeat('monty',5),concat('*',space(5),'*');
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repeat('monty',5) concat('*',space(5),'*')
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montymontymontymontymonty * *
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select reverse('abc'),reverse('abcd');
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reverse('abc') reverse('abcd')
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cba dcba
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select rpad('a',4,'1'),rpad('a',4,'12'),rpad('abcd',3,'12'), rpad(11, 10 , 22), rpad("ab", 10, 22);
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rpad('a',4,'1') rpad('a',4,'12') rpad('abcd',3,'12') rpad(11, 10 , 22) rpad("ab", 10, 22)
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a111 a121 abc 1122222222 ab22222222
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select lpad('a',4,'1'),lpad('a',4,'12'),lpad('abcd',3,'12'), lpad(11, 10 , 22);
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lpad('a',4,'1') lpad('a',4,'12') lpad('abcd',3,'12') lpad(11, 10 , 22)
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111a 121a abc 2222222211
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select rpad(741653838,17,'0'),lpad(741653838,17,'0');
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rpad(741653838,17,'0') lpad(741653838,17,'0')
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74165383800000000 00000000741653838
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select rpad('abcd',7,'ab'),lpad('abcd',7,'ab');
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rpad('abcd',7,'ab') lpad('abcd',7,'ab')
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abcdaba abaabcd
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select rpad('abcd',1,'ab'),lpad('abcd',1,'ab');
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rpad('abcd',1,'ab') lpad('abcd',1,'ab')
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a a
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select rpad('STRING', 20, CONCAT('p','a','d') );
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rpad('STRING', 20, CONCAT('p','a','d') )
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STRINGpadpadpadpadpa
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select lpad('STRING', 20, CONCAT('p','a','d') );
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lpad('STRING', 20, CONCAT('p','a','d') )
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padpadpadpadpaSTRING
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select LEAST(NULL,'HARRY','HARRIOT',NULL,'HAROLD'),GREATEST(NULL,'HARRY','HARRIOT',NULL,'HAROLD');
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LEAST(NULL,'HARRY','HARRIOT',NULL,'HAROLD') GREATEST(NULL,'HARRY','HARRIOT',NULL,'HAROLD')
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HAROLD HARRY
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select least(1,2,3) | greatest(16,32,8), least(5,4)*1,greatest(-1.0,1.0)*1,least(3,2,1)*1.0,greatest(1,1.1,1.0),least("10",9),greatest("A","B","0");
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least(1,2,3) | greatest(16,32,8) least(5,4)*1 greatest(-1.0,1.0)*1 least(3,2,1)*1.0 greatest(1,1.1,1.0) least("10",9) greatest("A","B","0")
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33 4 1.0 1.0 1.1 9 B
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select decode(encode(repeat("a",100000),"monty"),"monty")=repeat("a",100000);
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decode(encode(repeat("a",100000),"monty"),"monty")=repeat("a",100000)
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1
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select decode(encode("abcdef","monty"),"monty")="abcdef";
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decode(encode("abcdef","monty"),"monty")="abcdef"
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1
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select quote('\'\"\\test');
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quote('\'\"\\test')
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'\'"\\test'
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select quote(concat('abc\'', '\\cba'));
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quote(concat('abc\'', '\\cba'))
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'abc\'\\cba'
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select quote(1/0), quote('\0\Z');
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quote(1/0) quote('\0\Z')
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NULL '\0\Z'
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select length(quote(concat(char(0),"test")));
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length(quote(concat(char(0),"test")))
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8
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select hex(quote(concat(char(224),char(227),char(230),char(231),char(232),char(234),char(235))));
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hex(quote(concat(char(224),char(227),char(230),char(231),char(232),char(234),char(235))))
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27E0E3E6E7E8EAEB27
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select unhex(hex("foobar")), hex(unhex("1234567890ABCDEF")), unhex("345678"), unhex(NULL);
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unhex(hex("foobar")) hex(unhex("1234567890ABCDEF")) unhex("345678") unhex(NULL)
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foobar 1234567890ABCDEF 4Vx NULL
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select hex(unhex("1")), hex(unhex("12")), hex(unhex("123")), hex(unhex("1234")), hex(unhex("12345")), hex(unhex("123456"));
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hex(unhex("1")) hex(unhex("12")) hex(unhex("123")) hex(unhex("1234")) hex(unhex("12345")) hex(unhex("123456"))
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01 12 0123 1234 012345 123456
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select length(unhex(md5("abrakadabra")));
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length(unhex(md5("abrakadabra")))
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16
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select concat('a', quote(NULL));
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concat('a', quote(NULL))
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aNULL
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select reverse("");
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reverse("")
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select insert("aa",100,1,"b"),insert("aa",1,3,"b"),left("aa",-1),substring("a",1,2);
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insert("aa",100,1,"b") insert("aa",1,3,"b") left("aa",-1) substring("a",1,2)
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aa b a
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select elt(2,1),field(NULL,"a","b","c"),reverse("");
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elt(2,1) field(NULL,"a","b","c") reverse("")
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NULL 0
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select locate("a","b",2),locate("","a",1);
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locate("a","b",2) locate("","a",1)
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0 1
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select ltrim("a"),rtrim("a"),trim(BOTH "" from "a"),trim(BOTH " " from "a");
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ltrim("a") rtrim("a") trim(BOTH "" from "a") trim(BOTH " " from "a")
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a a a a
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select concat("1","2")|0,concat("1",".5")+0.0;
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concat("1","2")|0 concat("1",".5")+0.0
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12 1.5
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select substring_index("www.tcx.se","",3);
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substring_index("www.tcx.se","",3)
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select length(repeat("a",100000000)),length(repeat("a",1000*64));
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length(repeat("a",100000000)) length(repeat("a",1000*64))
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NULL 64000
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Warnings:
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Warning 1301 Result of repeat() was larger than max_allowed_packet (1048576) - truncated
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select position("0" in "baaa" in (1)),position("0" in "1" in (1,2,3)),position("sql" in ("mysql"));
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position("0" in "baaa" in (1)) position("0" in "1" in (1,2,3)) position("sql" in ("mysql"))
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1 0 3
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Warnings:
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Warning 1292 Truncated incorrect DOUBLE value: 'baaa'
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select position(("1" in (1,2,3)) in "01");
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position(("1" in (1,2,3)) in "01")
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2
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select length(repeat("a",65500)),length(concat(repeat("a",32000),repeat("a",32000))),length(replace("aaaaa","a",concat(repeat("a",10000)))),length(insert(repeat("a",40000),1,30000,repeat("b",50000)));
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length(repeat("a",65500)) length(concat(repeat("a",32000),repeat("a",32000))) length(replace("aaaaa","a",concat(repeat("a",10000)))) length(insert(repeat("a",40000),1,30000,repeat("b",50000)))
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65500 64000 50000 60000
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select length(repeat("a",1000000)),length(concat(repeat("a",32000),repeat("a",32000),repeat("a",32000))),length(replace("aaaaa","a",concat(repeat("a",32000)))),length(insert(repeat("a",48000),1,1000,repeat("a",48000)));
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length(repeat("a",1000000)) length(concat(repeat("a",32000),repeat("a",32000),repeat("a",32000))) length(replace("aaaaa","a",concat(repeat("a",32000)))) length(insert(repeat("a",48000),1,1000,repeat("a",48000)))
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1000000 96000 160000 95000
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create table t1 ( domain char(50) );
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insert into t1 VALUES ("hello.de" ), ("test.de" );
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select domain from t1 where concat('@', trim(leading '.' from concat('.', domain))) = '@hello.de';
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domain
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hello.de
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select domain from t1 where concat('@', trim(leading '.' from concat('.', domain))) = '@test.de';
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domain
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test.de
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drop table t1;
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CREATE TABLE t1 (
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id int(10) unsigned NOT NULL,
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title varchar(255) default NULL,
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prio int(10) unsigned default NULL,
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category int(10) unsigned default NULL,
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program int(10) unsigned default NULL,
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bugdesc text,
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created datetime default NULL,
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modified timestamp(14) NOT NULL,
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bugstatus int(10) unsigned default NULL,
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submitter int(10) unsigned default NULL
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) ENGINE=MyISAM;
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INSERT INTO t1 VALUES (1,'Link',1,1,1,'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa','2001-02-28 08:40:16',20010228084016,0,4);
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SELECT CONCAT('"',CONCAT_WS('";"',title,prio,category,program,bugdesc,created,modified+0,bugstatus,submitter), '"') FROM t1;
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CONCAT('"',CONCAT_WS('";"',title,prio,category,program,bugdesc,created,modified+0,bugstatus,submitter), '"')
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"Link";"1";"1";"1";"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";"2001-02-28 08:40:16";"20010228084016";"0";"4"
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SELECT CONCAT('"',CONCAT_WS('";"',title,prio,category,program,bugstatus,submitter), '"') FROM t1;
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CONCAT('"',CONCAT_WS('";"',title,prio,category,program,bugstatus,submitter), '"')
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"Link";"1";"1";"1";"0";"4"
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SELECT CONCAT_WS('";"',title,prio,category,program,bugdesc,created,modified+0,bugstatus,submitter) FROM t1;
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CONCAT_WS('";"',title,prio,category,program,bugdesc,created,modified+0,bugstatus,submitter)
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Link";"1";"1";"1";"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";"2001-02-28 08:40:16";"20010228084016";"0";"4
|
||
SELECT bugdesc, REPLACE(bugdesc, 'xxxxxxxxxxxxxxxxxxxx', 'bbbbbbbbbbbbbbbbbbbb') from t1 group by bugdesc;
|
||
bugdesc REPLACE(bugdesc, 'xxxxxxxxxxxxxxxxxxxx', 'bbbbbbbbbbbbbbbbbbbb')
|
||
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
|
||
drop table t1;
|
||
CREATE TABLE t1 (id int(11) NOT NULL auto_increment, tmp text NOT NULL, KEY id (id)) ENGINE=MyISAM;
|
||
INSERT INTO t1 VALUES (1, 'a545f661efdd1fb66fdee3aab79945bf');
|
||
SELECT 1 FROM t1 WHERE tmp=AES_DECRYPT(tmp,"password");
|
||
1
|
||
DROP TABLE t1;
|
||
CREATE TABLE t1 (
|
||
wid int(10) unsigned NOT NULL auto_increment,
|
||
data_podp date default NULL,
|
||
status_wnio enum('nowy','podp','real','arch') NOT NULL default 'nowy',
|
||
PRIMARY KEY(wid)
|
||
);
|
||
INSERT INTO t1 VALUES (8,NULL,'real');
|
||
INSERT INTO t1 VALUES (9,NULL,'nowy');
|
||
SELECT elt(status_wnio,data_podp) FROM t1 GROUP BY wid;
|
||
elt(status_wnio,data_podp)
|
||
NULL
|
||
NULL
|
||
DROP TABLE t1;
|
||
CREATE TABLE t1 (title text) ENGINE=MyISAM;
|
||
INSERT INTO t1 VALUES ('Congress reconvenes in September to debate welfare and adult education');
|
||
INSERT INTO t1 VALUES ('House passes the CAREERS bill');
|
||
SELECT CONCAT("</a>",RPAD("",(55 - LENGTH(title)),".")) from t1;
|
||
CONCAT("</a>",RPAD("",(55 - LENGTH(title)),"."))
|
||
NULL
|
||
</a>..........................
|
||
DROP TABLE t1;
|
||
CREATE TABLE t1 (i int, j int);
|
||
INSERT INTO t1 VALUES (1,1),(2,2);
|
||
SELECT DISTINCT i, ELT(j, '345', '34') FROM t1;
|
||
i ELT(j, '345', '34')
|
||
1 345
|
||
2 34
|
||
DROP TABLE t1;
|
||
create table t1(a char(4));
|
||
insert into t1 values ('one'),(NULL),('two'),('four');
|
||
select a, quote(a), isnull(quote(a)), quote(a) is null, ifnull(quote(a), 'n') from t1;
|
||
a quote(a) isnull(quote(a)) quote(a) is null ifnull(quote(a), 'n')
|
||
one 'one' 0 0 'one'
|
||
NULL NULL 0 0 NULL
|
||
two 'two' 0 0 'two'
|
||
four 'four' 0 0 'four'
|
||
drop table t1;
|
||
select trim(trailing 'foo' from 'foo');
|
||
trim(trailing 'foo' from 'foo')
|
||
|
||
select trim(leading 'foo' from 'foo');
|
||
trim(leading 'foo' from 'foo')
|
||
|
||
select quote(ltrim(concat(' ', 'a')));
|
||
quote(ltrim(concat(' ', 'a')))
|
||
'a'
|
||
select quote(trim(concat(' ', 'a')));
|
||
quote(trim(concat(' ', 'a')))
|
||
'a'
|
||
CREATE TABLE t1 SELECT 1 UNION SELECT 2 UNION SELECT 3;
|
||
SELECT QUOTE('A') FROM t1;
|
||
QUOTE('A')
|
||
'A'
|
||
'A'
|
||
'A'
|
||
DROP TABLE t1;
|
||
select 1=_latin1'1';
|
||
1=_latin1'1'
|
||
1
|
||
select _latin1'1'=1;
|
||
_latin1'1'=1
|
||
1
|
||
select _latin2'1'=1;
|
||
_latin2'1'=1
|
||
1
|
||
select 1=_latin2'1';
|
||
1=_latin2'1'
|
||
1
|
||
select _latin1'1'=_latin2'1';
|
||
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE) and (latin2_general_ci,COERCIBLE) for operation '='
|
||
select row('a','b','c') = row('a','b','c');
|
||
row('a','b','c') = row('a','b','c')
|
||
1
|
||
select row('A','b','c') = row('a','b','c');
|
||
row('A','b','c') = row('a','b','c')
|
||
1
|
||
select row('A' COLLATE latin1_bin,'b','c') = row('a','b','c');
|
||
row('A' COLLATE latin1_bin,'b','c') = row('a','b','c')
|
||
0
|
||
select row('A','b','c') = row('a' COLLATE latin1_bin,'b','c');
|
||
row('A','b','c') = row('a' COLLATE latin1_bin,'b','c')
|
||
0
|
||
select row('A' COLLATE latin1_general_ci,'b','c') = row('a' COLLATE latin1_bin,'b','c');
|
||
ERROR HY000: Illegal mix of collations (latin1_general_ci,EXPLICIT) and (latin1_bin,EXPLICIT) for operation '='
|
||
select concat(_latin1'a',_latin2'a');
|
||
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE) and (latin2_general_ci,COERCIBLE) for operation 'concat'
|
||
select concat(_latin1'a',_latin2'a',_latin5'a');
|
||
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE), (latin2_general_ci,COERCIBLE), (latin5_turkish_ci,COERCIBLE) for operation 'concat'
|
||
select concat(_latin1'a',_latin2'a',_latin5'a',_latin7'a');
|
||
ERROR HY000: Illegal mix of collations for operation 'concat'
|
||
select concat_ws(_latin1'a',_latin2'a');
|
||
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE) and (latin2_general_ci,COERCIBLE) for operation 'concat_ws'
|
||
select FIELD('b','A','B');
|
||
FIELD('b','A','B')
|
||
2
|
||
select FIELD('B','A','B');
|
||
FIELD('B','A','B')
|
||
2
|
||
select FIELD('b' COLLATE latin1_bin,'A','B');
|
||
FIELD('b' COLLATE latin1_bin,'A','B')
|
||
0
|
||
select FIELD('b','A' COLLATE latin1_bin,'B');
|
||
FIELD('b','A' COLLATE latin1_bin,'B')
|
||
0
|
||
select FIELD(_latin2'b','A','B');
|
||
ERROR HY000: Illegal mix of collations (latin2_general_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE) for operation 'field'
|
||
select FIELD('b',_latin2'A','B');
|
||
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE), (latin2_general_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE) for operation 'field'
|
||
select FIELD('1',_latin2'3','2',1);
|
||
FIELD('1',_latin2'3','2',1)
|
||
3
|
||
select POSITION(_latin1'B' IN _latin1'abcd');
|
||
POSITION(_latin1'B' IN _latin1'abcd')
|
||
2
|
||
select POSITION(_latin1'B' IN _latin1'abcd' COLLATE latin1_bin);
|
||
POSITION(_latin1'B' IN _latin1'abcd' COLLATE latin1_bin)
|
||
0
|
||
select POSITION(_latin1'B' COLLATE latin1_bin IN _latin1'abcd');
|
||
POSITION(_latin1'B' COLLATE latin1_bin IN _latin1'abcd')
|
||
0
|
||
select POSITION(_latin1'B' COLLATE latin1_general_ci IN _latin1'abcd' COLLATE latin1_bin);
|
||
ERROR HY000: Illegal mix of collations (latin1_bin,EXPLICIT) and (latin1_general_ci,EXPLICIT) for operation 'locate'
|
||
select POSITION(_latin1'B' IN _latin2'abcd');
|
||
ERROR HY000: Illegal mix of collations (latin2_general_ci,COERCIBLE) and (latin1_swedish_ci,COERCIBLE) for operation 'locate'
|
||
select FIND_IN_SET(_latin1'B',_latin1'a,b,c,d');
|
||
FIND_IN_SET(_latin1'B',_latin1'a,b,c,d')
|
||
2
|
||
select FIND_IN_SET(_latin1'B' COLLATE latin1_general_ci,_latin1'a,b,c,d' COLLATE latin1_bin);
|
||
ERROR HY000: Illegal mix of collations (latin1_general_ci,EXPLICIT) and (latin1_bin,EXPLICIT) for operation 'find_in_set'
|
||
select FIND_IN_SET(_latin1'B',_latin2'a,b,c,d');
|
||
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE) and (latin2_general_ci,COERCIBLE) for operation 'find_in_set'
|
||
select SUBSTRING_INDEX(_latin1'abcdabcdabcd',_latin1'd',2);
|
||
SUBSTRING_INDEX(_latin1'abcdabcdabcd',_latin1'd',2)
|
||
abcdabc
|
||
select SUBSTRING_INDEX(_latin1'abcdabcdabcd',_latin2'd',2);
|
||
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE) and (latin2_general_ci,COERCIBLE) for operation 'substring_index'
|
||
select SUBSTRING_INDEX(_latin1'abcdabcdabcd' COLLATE latin1_general_ci,_latin1'd' COLLATE latin1_bin,2);
|
||
ERROR HY000: Illegal mix of collations (latin1_general_ci,EXPLICIT) and (latin1_bin,EXPLICIT) for operation 'substring_index'
|
||
select _latin1'B' between _latin1'a' and _latin1'c';
|
||
_latin1'B' between _latin1'a' and _latin1'c'
|
||
1
|
||
select _latin1'B' collate latin1_bin between _latin1'a' and _latin1'c';
|
||
_latin1'B' collate latin1_bin between _latin1'a' and _latin1'c'
|
||
0
|
||
select _latin1'B' between _latin1'a' collate latin1_bin and _latin1'c';
|
||
_latin1'B' between _latin1'a' collate latin1_bin and _latin1'c'
|
||
0
|
||
select _latin1'B' between _latin1'a' and _latin1'c' collate latin1_bin;
|
||
_latin1'B' between _latin1'a' and _latin1'c' collate latin1_bin
|
||
0
|
||
select _latin2'B' between _latin1'a' and _latin1'b';
|
||
ERROR HY000: Illegal mix of collations (latin2_general_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE) for operation 'between'
|
||
select _latin1'B' between _latin2'a' and _latin1'b';
|
||
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE), (latin2_general_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE) for operation 'between'
|
||
select _latin1'B' between _latin1'a' and _latin2'b';
|
||
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE), (latin2_general_ci,COERCIBLE) for operation 'between'
|
||
select _latin1'B' collate latin1_general_ci between _latin1'a' collate latin1_bin and _latin1'b';
|
||
ERROR HY000: Illegal mix of collations (latin1_general_ci,EXPLICIT), (latin1_bin,EXPLICIT), (latin1_swedish_ci,COERCIBLE) for operation 'between'
|
||
select _latin1'B' in (_latin1'a',_latin1'b');
|
||
_latin1'B' in (_latin1'a',_latin1'b')
|
||
1
|
||
select _latin1'B' collate latin1_bin in (_latin1'a',_latin1'b');
|
||
_latin1'B' collate latin1_bin in (_latin1'a',_latin1'b')
|
||
0
|
||
select _latin1'B' in (_latin1'a' collate latin1_bin,_latin1'b');
|
||
_latin1'B' in (_latin1'a' collate latin1_bin,_latin1'b')
|
||
0
|
||
select _latin1'B' in (_latin1'a',_latin1'b' collate latin1_bin);
|
||
_latin1'B' in (_latin1'a',_latin1'b' collate latin1_bin)
|
||
0
|
||
select _latin2'B' in (_latin1'a',_latin1'b');
|
||
ERROR HY000: Illegal mix of collations (latin2_general_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE) for operation ' IN '
|
||
select _latin1'B' in (_latin2'a',_latin1'b');
|
||
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE), (latin2_general_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE) for operation ' IN '
|
||
select _latin1'B' in (_latin1'a',_latin2'b');
|
||
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE), (latin2_general_ci,COERCIBLE) for operation ' IN '
|
||
select _latin1'B' COLLATE latin1_general_ci in (_latin1'a' COLLATE latin1_bin,_latin1'b');
|
||
ERROR HY000: Illegal mix of collations (latin1_general_ci,EXPLICIT), (latin1_bin,EXPLICIT), (latin1_swedish_ci,COERCIBLE) for operation ' IN '
|
||
select _latin1'B' COLLATE latin1_general_ci in (_latin1'a',_latin1'b' COLLATE latin1_bin);
|
||
ERROR HY000: Illegal mix of collations (latin1_general_ci,EXPLICIT), (latin1_swedish_ci,COERCIBLE), (latin1_bin,EXPLICIT) for operation ' IN '
|
||
select collation(bin(130)), coercibility(bin(130));
|
||
collation(bin(130)) coercibility(bin(130))
|
||
latin1_swedish_ci 4
|
||
select collation(oct(130)), coercibility(oct(130));
|
||
collation(oct(130)) coercibility(oct(130))
|
||
latin1_swedish_ci 4
|
||
select collation(conv(130,16,10)), coercibility(conv(130,16,10));
|
||
collation(conv(130,16,10)) coercibility(conv(130,16,10))
|
||
latin1_swedish_ci 4
|
||
select collation(hex(130)), coercibility(hex(130));
|
||
collation(hex(130)) coercibility(hex(130))
|
||
latin1_swedish_ci 4
|
||
select collation(char(130)), coercibility(hex(130));
|
||
collation(char(130)) coercibility(hex(130))
|
||
latin1_swedish_ci 4
|
||
select collation(format(130,10)), coercibility(format(130,10));
|
||
collation(format(130,10)) coercibility(format(130,10))
|
||
latin1_swedish_ci 4
|
||
select collation(lcase(_latin2'a')), coercibility(lcase(_latin2'a'));
|
||
collation(lcase(_latin2'a')) coercibility(lcase(_latin2'a'))
|
||
latin2_general_ci 4
|
||
select collation(ucase(_latin2'a')), coercibility(ucase(_latin2'a'));
|
||
collation(ucase(_latin2'a')) coercibility(ucase(_latin2'a'))
|
||
latin2_general_ci 4
|
||
select collation(left(_latin2'a',1)), coercibility(left(_latin2'a',1));
|
||
collation(left(_latin2'a',1)) coercibility(left(_latin2'a',1))
|
||
latin2_general_ci 4
|
||
select collation(right(_latin2'a',1)), coercibility(right(_latin2'a',1));
|
||
collation(right(_latin2'a',1)) coercibility(right(_latin2'a',1))
|
||
latin2_general_ci 4
|
||
select collation(substring(_latin2'a',1,1)), coercibility(substring(_latin2'a',1,1));
|
||
collation(substring(_latin2'a',1,1)) coercibility(substring(_latin2'a',1,1))
|
||
latin2_general_ci 4
|
||
select collation(concat(_latin2'a',_latin2'b')), coercibility(concat(_latin2'a',_latin2'b'));
|
||
collation(concat(_latin2'a',_latin2'b')) coercibility(concat(_latin2'a',_latin2'b'))
|
||
latin2_general_ci 4
|
||
select collation(lpad(_latin2'a',4,_latin2'b')), coercibility(lpad(_latin2'a',4,_latin2'b'));
|
||
collation(lpad(_latin2'a',4,_latin2'b')) coercibility(lpad(_latin2'a',4,_latin2'b'))
|
||
latin2_general_ci 4
|
||
select collation(rpad(_latin2'a',4,_latin2'b')), coercibility(rpad(_latin2'a',4,_latin2'b'));
|
||
collation(rpad(_latin2'a',4,_latin2'b')) coercibility(rpad(_latin2'a',4,_latin2'b'))
|
||
latin2_general_ci 4
|
||
select collation(concat_ws(_latin2'a',_latin2'b')), coercibility(concat_ws(_latin2'a',_latin2'b'));
|
||
collation(concat_ws(_latin2'a',_latin2'b')) coercibility(concat_ws(_latin2'a',_latin2'b'))
|
||
latin2_general_ci 4
|
||
select collation(make_set(255,_latin2'a',_latin2'b',_latin2'c')), coercibility(make_set(255,_latin2'a',_latin2'b',_latin2'c'));
|
||
collation(make_set(255,_latin2'a',_latin2'b',_latin2'c')) coercibility(make_set(255,_latin2'a',_latin2'b',_latin2'c'))
|
||
latin2_general_ci 4
|
||
select collation(export_set(255,_latin2'y',_latin2'n',_latin2' ')), coercibility(export_set(255,_latin2'y',_latin2'n',_latin2' '));
|
||
collation(export_set(255,_latin2'y',_latin2'n',_latin2' ')) coercibility(export_set(255,_latin2'y',_latin2'n',_latin2' '))
|
||
latin2_general_ci 4
|
||
select collation(trim(_latin2' a ')), coercibility(trim(_latin2' a '));
|
||
collation(trim(_latin2' a ')) coercibility(trim(_latin2' a '))
|
||
latin2_general_ci 4
|
||
select collation(ltrim(_latin2' a ')), coercibility(ltrim(_latin2' a '));
|
||
collation(ltrim(_latin2' a ')) coercibility(ltrim(_latin2' a '))
|
||
latin2_general_ci 4
|
||
select collation(rtrim(_latin2' a ')), coercibility(rtrim(_latin2' a '));
|
||
collation(rtrim(_latin2' a ')) coercibility(rtrim(_latin2' a '))
|
||
latin2_general_ci 4
|
||
select collation(trim(LEADING _latin2' ' FROM _latin2'a')), coercibility(trim(LEADING _latin2'a' FROM _latin2'a'));
|
||
collation(trim(LEADING _latin2' ' FROM _latin2'a')) coercibility(trim(LEADING _latin2'a' FROM _latin2'a'))
|
||
latin2_general_ci 4
|
||
select collation(trim(TRAILING _latin2' ' FROM _latin2'a')), coercibility(trim(TRAILING _latin2'a' FROM _latin2'a'));
|
||
collation(trim(TRAILING _latin2' ' FROM _latin2'a')) coercibility(trim(TRAILING _latin2'a' FROM _latin2'a'))
|
||
latin2_general_ci 4
|
||
select collation(trim(BOTH _latin2' ' FROM _latin2'a')), coercibility(trim(BOTH _latin2'a' FROM _latin2'a'));
|
||
collation(trim(BOTH _latin2' ' FROM _latin2'a')) coercibility(trim(BOTH _latin2'a' FROM _latin2'a'))
|
||
latin2_general_ci 4
|
||
select collation(repeat(_latin2'a',10)), coercibility(repeat(_latin2'a',10));
|
||
collation(repeat(_latin2'a',10)) coercibility(repeat(_latin2'a',10))
|
||
latin2_general_ci 4
|
||
select collation(reverse(_latin2'ab')), coercibility(reverse(_latin2'ab'));
|
||
collation(reverse(_latin2'ab')) coercibility(reverse(_latin2'ab'))
|
||
latin2_general_ci 4
|
||
select collation(quote(_latin2'ab')), coercibility(quote(_latin2'ab'));
|
||
collation(quote(_latin2'ab')) coercibility(quote(_latin2'ab'))
|
||
latin2_general_ci 4
|
||
select collation(soundex(_latin2'ab')), coercibility(soundex(_latin2'ab'));
|
||
collation(soundex(_latin2'ab')) coercibility(soundex(_latin2'ab'))
|
||
latin2_general_ci 4
|
||
select collation(substring(_latin2'ab',1)), coercibility(substring(_latin2'ab',1));
|
||
collation(substring(_latin2'ab',1)) coercibility(substring(_latin2'ab',1))
|
||
latin2_general_ci 4
|
||
select collation(insert(_latin2'abcd',2,3,_latin2'ef')), coercibility(insert(_latin2'abcd',2,3,_latin2'ef'));
|
||
collation(insert(_latin2'abcd',2,3,_latin2'ef')) coercibility(insert(_latin2'abcd',2,3,_latin2'ef'))
|
||
latin2_general_ci 4
|
||
select collation(replace(_latin2'abcd',_latin2'b',_latin2'B')), coercibility(replace(_latin2'abcd',_latin2'b',_latin2'B'));
|
||
collation(replace(_latin2'abcd',_latin2'b',_latin2'B')) coercibility(replace(_latin2'abcd',_latin2'b',_latin2'B'))
|
||
latin2_general_ci 4
|
||
select collation(encode('abcd','ab')), coercibility(encode('abcd','ab'));
|
||
collation(encode('abcd','ab')) coercibility(encode('abcd','ab'))
|
||
binary 4
|
||
create table t1
|
||
select
|
||
bin(130),
|
||
oct(130),
|
||
conv(130,16,10),
|
||
hex(130),
|
||
char(130),
|
||
format(130,10),
|
||
left(_latin2'a',1),
|
||
right(_latin2'a',1),
|
||
lcase(_latin2'a'),
|
||
ucase(_latin2'a'),
|
||
substring(_latin2'a',1,1),
|
||
concat(_latin2'a',_latin2'b'),
|
||
lpad(_latin2'a',4,_latin2'b'),
|
||
rpad(_latin2'a',4,_latin2'b'),
|
||
concat_ws(_latin2'a',_latin2'b'),
|
||
make_set(255,_latin2'a',_latin2'b',_latin2'c'),
|
||
export_set(255,_latin2'y',_latin2'n',_latin2' '),
|
||
trim(_latin2' a '),
|
||
ltrim(_latin2' a '),
|
||
rtrim(_latin2' a '),
|
||
trim(LEADING _latin2' ' FROM _latin2' a '),
|
||
trim(TRAILING _latin2' ' FROM _latin2' a '),
|
||
trim(BOTH _latin2' ' FROM _latin2' a '),
|
||
repeat(_latin2'a',10),
|
||
reverse(_latin2'ab'),
|
||
quote(_latin2'ab'),
|
||
soundex(_latin2'ab'),
|
||
substring(_latin2'ab',1),
|
||
insert(_latin2'abcd',2,3,_latin2'ef'),
|
||
replace(_latin2'abcd',_latin2'b',_latin2'B'),
|
||
encode('abcd','ab')
|
||
;
|
||
Warnings:
|
||
Warning 1265 Data truncated for column 'format(130,10)' at row 1
|
||
show create table t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`bin(130)` varchar(64) NOT NULL default '',
|
||
`oct(130)` varchar(64) NOT NULL default '',
|
||
`conv(130,16,10)` varchar(64) NOT NULL default '',
|
||
`hex(130)` varchar(6) NOT NULL default '',
|
||
`char(130)` varchar(1) NOT NULL default '',
|
||
`format(130,10)` varchar(4) NOT NULL default '',
|
||
`left(_latin2'a',1)` varchar(1) character set latin2 NOT NULL default '',
|
||
`right(_latin2'a',1)` varchar(1) character set latin2 NOT NULL default '',
|
||
`lcase(_latin2'a')` varchar(1) character set latin2 NOT NULL default '',
|
||
`ucase(_latin2'a')` varchar(1) character set latin2 NOT NULL default '',
|
||
`substring(_latin2'a',1,1)` varchar(1) character set latin2 NOT NULL default '',
|
||
`concat(_latin2'a',_latin2'b')` varchar(2) character set latin2 NOT NULL default '',
|
||
`lpad(_latin2'a',4,_latin2'b')` varchar(4) character set latin2 NOT NULL default '',
|
||
`rpad(_latin2'a',4,_latin2'b')` varchar(4) character set latin2 NOT NULL default '',
|
||
`concat_ws(_latin2'a',_latin2'b')` varchar(1) character set latin2 NOT NULL default '',
|
||
`make_set(255,_latin2'a',_latin2'b',_latin2'c')` varchar(5) character set latin2 NOT NULL default '',
|
||
`export_set(255,_latin2'y',_latin2'n',_latin2' ')` varchar(127) character set latin2 NOT NULL default '',
|
||
`trim(_latin2' a ')` varchar(3) character set latin2 NOT NULL default '',
|
||
`ltrim(_latin2' a ')` varchar(3) character set latin2 NOT NULL default '',
|
||
`rtrim(_latin2' a ')` varchar(3) character set latin2 NOT NULL default '',
|
||
`trim(LEADING _latin2' ' FROM _latin2' a ')` varchar(3) character set latin2 NOT NULL default '',
|
||
`trim(TRAILING _latin2' ' FROM _latin2' a ')` varchar(3) character set latin2 NOT NULL default '',
|
||
`trim(BOTH _latin2' ' FROM _latin2' a ')` varchar(3) character set latin2 NOT NULL default '',
|
||
`repeat(_latin2'a',10)` varchar(10) character set latin2 NOT NULL default '',
|
||
`reverse(_latin2'ab')` varchar(2) character set latin2 NOT NULL default '',
|
||
`quote(_latin2'ab')` varchar(6) character set latin2 NOT NULL default '',
|
||
`soundex(_latin2'ab')` varchar(4) character set latin2 NOT NULL default '',
|
||
`substring(_latin2'ab',1)` varchar(2) character set latin2 NOT NULL default '',
|
||
`insert(_latin2'abcd',2,3,_latin2'ef')` varchar(6) character set latin2 NOT NULL default '',
|
||
`replace(_latin2'abcd',_latin2'b',_latin2'B')` varchar(4) character set latin2 NOT NULL default '',
|
||
`encode('abcd','ab')` varbinary(4) NOT NULL default ''
|
||
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
||
drop table t1;
|
||
create table t1 (a char character set latin2);
|
||
insert into t1 values (null);
|
||
select charset(a), collation(a), coercibility(a) from t1;
|
||
charset(a) collation(a) coercibility(a)
|
||
latin2 latin2_general_ci 2
|
||
drop table t1;
|
||
select charset(null), collation(null), coercibility(null);
|
||
charset(null) collation(null) coercibility(null)
|
||
binary binary 5
|
||
CREATE TABLE t1 (a int, b int);
|
||
CREATE TABLE t2 (a int, b int);
|
||
INSERT INTO t1 VALUES (1,1),(2,2);
|
||
INSERT INTO t2 VALUES (2,2),(3,3);
|
||
select t1.*,t2.* from t1 left join t2 on (t1.b=t2.b)
|
||
where collation(t2.a) = _utf8'binary' order by t1.a,t2.a;
|
||
a b a b
|
||
1 1 NULL NULL
|
||
2 2 2 2
|
||
select t1.*,t2.* from t1 left join t2 on (t1.b=t2.b)
|
||
where charset(t2.a) = _utf8'binary' order by t1.a,t2.a;
|
||
a b a b
|
||
1 1 NULL NULL
|
||
2 2 2 2
|
||
select t1.*,t2.* from t1 left join t2 on (t1.b=t2.b)
|
||
where coercibility(t2.a) = 2 order by t1.a,t2.a;
|
||
a b a b
|
||
1 1 NULL NULL
|
||
2 2 2 2
|
||
DROP TABLE t1, t2;
|
||
select SUBSTR('abcdefg',3,2);
|
||
SUBSTR('abcdefg',3,2)
|
||
cd
|
||
select SUBSTRING('abcdefg',3,2);
|
||
SUBSTRING('abcdefg',3,2)
|
||
cd
|
||
select SUBSTR('abcdefg',-3,2) FROM DUAL;
|
||
SUBSTR('abcdefg',-3,2)
|
||
ef
|
||
select SUBSTR('abcdefg',-1,5) FROM DUAL;
|
||
SUBSTR('abcdefg',-1,5)
|
||
g
|
||
select SUBSTR('abcdefg',0,0) FROM DUAL;
|
||
SUBSTR('abcdefg',0,0)
|
||
|
||
select SUBSTR('abcdefg',-1,-1) FROM DUAL;
|
||
SUBSTR('abcdefg',-1,-1)
|
||
|
||
select SUBSTR('abcdefg',1,-1) FROM DUAL;
|
||
SUBSTR('abcdefg',1,-1)
|
||
|
||
create table t7 (s1 char);
|
||
select * from t7
|
||
where concat(s1 collate latin1_general_ci,s1 collate latin1_swedish_ci) = 'AA';
|
||
ERROR HY000: Illegal mix of collations (latin1_general_ci,EXPLICIT) and (latin1_swedish_ci,EXPLICIT) for operation 'concat'
|
||
drop table t7;
|
||
select substring_index("1abcd;2abcd;3abcd;4abcd", ';', 2),substring_index("1abcd;2abcd;3abcd;4abcd", ';', -2);
|
||
substring_index("1abcd;2abcd;3abcd;4abcd", ';', 2) substring_index("1abcd;2abcd;3abcd;4abcd", ';', -2)
|
||
1abcd;2abcd 3abcd;4abcd
|
||
explain extended select md5('hello'), sha('abc'), sha1('abc'), soundex(''), 'mood' sounds like 'mud', aes_decrypt(aes_encrypt('abc','1'),'1'),concat('*',space(5),'*'), reverse('abc'), rpad('a',4,'1'), lpad('a',4,'1'), concat_ws(',','',NULL,'a'),make_set(255,_latin2'a',_latin2'b',_latin2'c'),elt(2,1),locate("a","b",2),format(130,10),char(0),conv(130,16,10),hex(130),binary 'HE', export_set(255,_latin2'y',_latin2'n',_latin2' '),FIELD('b' COLLATE latin1_bin,'A','B'),FIND_IN_SET(_latin1'B',_latin1'a,b,c,d'),collation(conv(130,16,10)), coercibility(conv(130,16,10)),length('\n\t\r\b\0\_\%\\'),bit_length('\n\t\r\b\0\_\%\\'),bit_length('\n\t\r\b\0\_\%\\'),concat('monty',' was here ','again'),length('hello'),char(ascii('h')),ord('h'),quote(1/0),crc32("123"),replace('aaaa','a','b'),insert('txs',2,1,'hi'),left(_latin2'a',1),right(_latin2'a',1),lcase(_latin2'a'),ucase(_latin2'a'),SUBSTR('abcdefg',3,2),substring_index("1abcd;2abcd;3abcd;4abcd", ';', 2),trim(_latin2' a '),ltrim(_latin2' a '),rtrim(_latin2' a '), decode(encode(repeat("a",100000),"monty"),"monty");
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL No tables used
|
||
Warnings:
|
||
Note 1003 select md5(_latin1'hello') AS `md5('hello')`,sha(_latin1'abc') AS `sha('abc')`,sha(_latin1'abc') AS `sha1('abc')`,soundex(_latin1'') AS `soundex('')`,(soundex(_latin1'mood') = soundex(_latin1'mud')) AS `'mood' sounds like 'mud'`,aes_decrypt(aes_encrypt(_latin1'abc',_latin1'1'),_latin1'1') AS `aes_decrypt(aes_encrypt('abc','1'),'1')`,concat(_latin1'*',repeat(_latin1' ',5),_latin1'*') AS `concat('*',space(5),'*')`,reverse(_latin1'abc') AS `reverse('abc')`,rpad(_latin1'a',4,_latin1'1') AS `rpad('a',4,'1')`,lpad(_latin1'a',4,_latin1'1') AS `lpad('a',4,'1')`,concat_ws(_latin1',',_latin1'',NULL,_latin1'a') AS `concat_ws(',','',NULL,'a')`,make_set(255,_latin2'a',_latin2'b',_latin2'c') AS `make_set(255,_latin2'a',_latin2'b',_latin2'c')`,elt(2,1) AS `elt(2,1)`,locate(_latin1'a',_latin1'b',2) AS `locate("a","b",2)`,format(130,10) AS `format(130,10)`,char(0) AS `char(0)`,conv(130,16,10) AS `conv(130,16,10)`,hex(130) AS `hex(130)`,cast(_latin1'HE' as char charset binary) AS `binary 'HE'`,export_set(255,_latin2'y',_latin2'n',_latin2' ') AS `export_set(255,_latin2'y',_latin2'n',_latin2' ')`,field((_latin1'b' collate latin1_bin),_latin1'A',_latin1'B') AS `FIELD('b' COLLATE latin1_bin,'A','B')`,find_in_set(_latin1'B',_latin1'a,b,c,d') AS `FIND_IN_SET(_latin1'B',_latin1'a,b,c,d')`,collation(conv(130,16,10)) AS `collation(conv(130,16,10))`,coercibility(conv(130,16,10)) AS `coercibility(conv(130,16,10))`,length(_latin1'\n \r\0\\_\\%\\') AS `length('\n\t\r\b\0\_\%\\')`,bit_length(_latin1'\n \r\0\\_\\%\\') AS `bit_length('\n\t\r\b\0\_\%\\')`,bit_length(_latin1'\n \r\0\\_\\%\\') AS `bit_length('\n\t\r\b\0\_\%\\')`,concat(_latin1'monty',_latin1' was here ',_latin1'again') AS `concat('monty',' was here ','again')`,length(_latin1'hello') AS `length('hello')`,char(ascii(_latin1'h')) AS `char(ascii('h'))`,ord(_latin1'h') AS `ord('h')`,quote((1 / 0)) AS `quote(1/0)`,crc32(_latin1'123') AS `crc32("123")`,replace(_latin1'aaaa',_latin1'a',_latin1'b') AS `replace('aaaa','a','b')`,insert(_latin1'txs',2,1,_latin1'hi') AS `insert('txs',2,1,'hi')`,left(_latin2'a',1) AS `left(_latin2'a',1)`,right(_latin2'a',1) AS `right(_latin2'a',1)`,lcase(_latin2'a') AS `lcase(_latin2'a')`,ucase(_latin2'a') AS `ucase(_latin2'a')`,substr(_latin1'abcdefg',3,2) AS `SUBSTR('abcdefg',3,2)`,substring_index(_latin1'1abcd;2abcd;3abcd;4abcd',_latin1';',2) AS `substring_index("1abcd;2abcd;3abcd;4abcd", ';', 2)`,trim(_latin2' a ') AS `trim(_latin2' a ')`,ltrim(_latin2' a ') AS `ltrim(_latin2' a ')`,rtrim(_latin2' a ') AS `rtrim(_latin2' a ')`,decode(encode(repeat(_latin1'a',100000))) AS `decode(encode(repeat("a",100000),"monty"),"monty")`
|
||
SELECT lpad(12345, 5, "#");
|
||
lpad(12345, 5, "#")
|
||
12345
|
||
SELECT conv(71, 10, 36), conv('1Z', 36, 10);
|
||
conv(71, 10, 36) conv('1Z', 36, 10)
|
||
1Z 71
|
||
create table t1 (id int(1), str varchar(10)) DEFAULT CHARSET=utf8;
|
||
insert into t1 values (1,'aaaaaaaaaa'), (2,'bbbbbbbbbb');
|
||
create table t2 (id int(1), str varchar(10)) DEFAULT CHARSET=utf8;
|
||
insert into t2 values (1,'cccccccccc'), (2,'dddddddddd');
|
||
select substring(concat(t1.str, t2.str), 1, 15) "name" from t1, t2
|
||
where t2.id=t1.id order by name;
|
||
name
|
||
aaaaaaaaaaccccc
|
||
bbbbbbbbbbddddd
|
||
drop table t1, t2;
|
||
create table t1 (c1 INT, c2 INT UNSIGNED);
|
||
insert into t1 values ('21474836461','21474836461');
|
||
Warnings:
|
||
Warning 1264 Out of range value adjusted for column 'c1' at row 1
|
||
Warning 1264 Out of range value adjusted for column 'c2' at row 1
|
||
insert into t1 values ('-21474836461','-21474836461');
|
||
Warnings:
|
||
Warning 1264 Out of range value adjusted for column 'c1' at row 1
|
||
Warning 1264 Out of range value adjusted for column 'c2' at row 1
|
||
show warnings;
|
||
Level Code Message
|
||
Warning 1264 Out of range value adjusted for column 'c1' at row 1
|
||
Warning 1264 Out of range value adjusted for column 'c2' at row 1
|
||
select * from t1;
|
||
c1 c2
|
||
2147483647 4294967295
|
||
-2147483648 0
|
||
drop table t1;
|
||
select left(1234, 3) + 0;
|
||
left(1234, 3) + 0
|
||
123
|
||
create table t1 (a int not null primary key, b varchar(40), c datetime);
|
||
insert into t1 (a,b,c) values (1,'Tom','2004-12-10 12:13:14'),(2,'ball games','2004-12-10 12:13:14'), (3,'Basil','2004-12-10 12:13:14'), (4,'Dean','2004-12-10 12:13:14'),(5,'Ellis','2004-12-10 12:13:14'), (6,'Serg','2004-12-10 12:13:14'), (7,'Sergei','2004-12-10 12:13:14'),(8,'Georg','2004-12-10 12:13:14'),(9,'Salle','2004-12-10 12:13:14'),(10,'Sinisa','2004-12-10 12:13:14');
|
||
select count(*) as total, left(c,10) as reg from t1 group by reg order by reg desc limit 0,12;
|
||
total reg
|
||
10 2004-12-10
|
||
drop table t1;
|
||
select trim(null from 'kate') as "must_be_null";
|
||
must_be_null
|
||
NULL
|
||
select trim('xyz' from null) as "must_be_null";
|
||
must_be_null
|
||
NULL
|
||
select trim(leading NULL from 'kate') as "must_be_null";
|
||
must_be_null
|
||
NULL
|
||
select trim(trailing NULL from 'xyz') as "must_be_null";
|
||
must_be_null
|
||
NULL
|
||
CREATE TABLE t1 (
|
||
id int(11) NOT NULL auto_increment,
|
||
a bigint(20) unsigned default NULL,
|
||
PRIMARY KEY (id)
|
||
) ENGINE=MyISAM;
|
||
INSERT INTO t1 VALUES
|
||
('0','16307858876001849059');
|
||
SELECT CONV('e251273eb74a8ee3', 16, 10);
|
||
CONV('e251273eb74a8ee3', 16, 10)
|
||
16307858876001849059
|
||
EXPLAIN
|
||
SELECT id
|
||
FROM t1
|
||
WHERE a = 16307858876001849059;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE t1 system NULL NULL NULL NULL 1
|
||
EXPLAIN
|
||
SELECT id
|
||
FROM t1
|
||
WHERE a = CONV('e251273eb74a8ee3', 16, 10);
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE t1 system NULL NULL NULL NULL 1
|
||
DROP TABLE t1;
|
||
SELECT CHAR(NULL,121,83,81,'76') as my_column;
|
||
my_column
|
||
ySQL
|
||
SELECT CHAR_LENGTH(CHAR(NULL,121,83,81,'76')) as my_column;
|
||
my_column
|
||
4
|
||
CREATE TABLE t1 (id int PRIMARY KEY, str char(255) NOT NULL);
|
||
CREATE TABLE t2 (id int NOT NULL UNIQUE);
|
||
INSERT INTO t2 VALUES (1),(2);
|
||
INSERT INTO t1 VALUES (1, aes_encrypt('foo', 'bar'));
|
||
INSERT INTO t1 VALUES (2, 'not valid');
|
||
SELECT t1.id, aes_decrypt(str, 'bar') FROM t1, t2 WHERE t1.id = t2.id;
|
||
id aes_decrypt(str, 'bar')
|
||
1 foo
|
||
2 NULL
|
||
SELECT t1.id, aes_decrypt(str, 'bar') FROM t1, t2 WHERE t1.id = t2.id
|
||
ORDER BY t1.id;
|
||
id aes_decrypt(str, 'bar')
|
||
1 foo
|
||
2 NULL
|
||
DROP TABLE t1, t2;
|