drop table if exists t1,t2; select 0=0,1>0,1>=1,1<0,1<=0,1!=0,strcmp("abc","abcd"),strcmp("b","a"),strcmp("a","a") ; 0=0 1>0 1>=1 1<0 1<=0 1!=0 strcmp("abc","abcd") strcmp("b","a") strcmp("a","a") 1 1 1 0 0 1 -1 1 0 select "a"<"b","a"<="b","b">="a","b">"a","a"="A","a"<>"b"; "a"<"b" "a"<="b" "b">="a" "b">"a" "a"="A" "a"<>"b" 1 1 1 1 1 1 select "a "="A", "A "="a", "a " <= "A b"; "a "="A" "A "="a" "a " <= "A b" 1 1 1 select "abc" like "a%", "abc" not like "%d%", "a%" like "a\%","abc%" like "a%\%","abcd" like "a%b_%d", "a" like "%%a","abcde" like "a%_e","abc" like "abc%"; "abc" like "a%" "abc" not like "%d%" "a%" like "a\%" "abc%" like "a%\%" "abcd" like "a%b_%d" "a" like "%%a" "abcde" like "a%_e" "abc" like "abc%" 1 1 1 1 1 1 1 1 select "a" like "%%b","a" like "%%ab","ab" like "a\%", "ab" like "_", "ab" like "ab_", "abc" like "%_d", "abc" like "abc%d"; "a" like "%%b" "a" like "%%ab" "ab" like "a\%" "ab" like "_" "ab" like "ab_" "abc" like "%_d" "abc" like "abc%d" 0 0 0 0 0 0 0 select '?' like '|%', '?' like '|%' ESCAPE '|', '%' like '|%', '%' like '|%' ESCAPE '|', '%' like '%'; '?' like '|%' '?' like '|%' ESCAPE '|' '%' like '|%' '%' like '|%' ESCAPE '|' '%' like '%' 0 0 0 1 1 select 'abc' like '%c','abcabc' like '%c', "ab" like "", "ab" like "a", "ab" like "ab"; 'abc' like '%c' 'abcabc' like '%c' "ab" like "" "ab" like "a" "ab" like "ab" 1 1 0 0 1 select "Det h�r �r svenska" regexp "h[[:alpha:]]+r", "aba" regexp "^(a|b)*$"; "Det h�r �r svenska" regexp "h[[:alpha:]]+r" "aba" regexp "^(a|b)*$" 1 1 select "aba" regexp concat("^","a"); "aba" regexp concat("^","a") 1 select !0,NOT 0=1,!(0=0),1 AND 1,1 && 0,0 OR 1,1 || NULL, 1=1 or 1=1 and 1=0; !0 NOT 0=1 !(0=0) 1 AND 1 1 && 0 0 OR 1 1 || NULL 1=1 or 1=1 and 1=0 1 1 0 1 0 1 1 1 select 2 between 1 and 3, "monty" between "max" and "my",2=2 and "monty" between "max" and "my" and 3=3; 2 between 1 and 3 "monty" between "max" and "my" 2=2 and "monty" between "max" and "my" and 3=3 1 1 1 select 'b' between 'a' and 'c', 'B' between 'a' and 'c'; 'b' between 'a' and 'c' 'B' between 'a' and 'c' 1 1 select 2 in (3,2,5,9,5,1),"monty" in ("david","monty","allan"), 1.2 in (1.4,1.2,1.0); 2 in (3,2,5,9,5,1) "monty" in ("david","monty","allan") 1.2 in (1.4,1.2,1.0) 1 1 1 select -1.49 or -1.49,0.6 or 0.6; -1.49 or -1.49 0.6 or 0.6 1 1 select 3 ^ 11, 1 ^ 1, 1 ^ 0, 1 ^ NULL, NULL ^ 1; 3 ^ 11 1 ^ 1 1 ^ 0 1 ^ NULL NULL ^ 1 8 0 1 NULL NULL explain extended select 3 ^ 11, 1 ^ 1, 1 ^ 0, 1 ^ NULL, NULL ^ 1; 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 (3 ^ 11) AS `3 ^ 11`,(1 ^ 1) AS `1 ^ 1`,(1 ^ 0) AS `1 ^ 0`,(1 ^ NULL) AS `1 ^ NULL`,(NULL ^ 1) AS `NULL ^ 1` select 1 XOR 1, 1 XOR 0, 0 XOR 1, 0 XOR 0, NULL XOR 1, 1 XOR NULL, 0 XOR NULL; 1 XOR 1 1 XOR 0 0 XOR 1 0 XOR 0 NULL XOR 1 1 XOR NULL 0 XOR NULL 0 1 1 0 NULL NULL NULL select 1 like 2 xor 2 like 1; 1 like 2 xor 2 like 1 0 select 10 % 7, 10 mod 7, 10 div 3; 10 % 7 10 mod 7 10 div 3 3 3 3 explain extended select 10 % 7, 10 mod 7, 10 div 3; 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 (10 % 7) AS `10 % 7`,(10 % 7) AS `10 mod 7`,(10 DIV 3) AS `10 div 3` select (1 << 64)-1, ((1 << 64)-1) DIV 1, ((1 << 64)-1) DIV 2; (1 << 64)-1 ((1 << 64)-1) DIV 1 ((1 << 64)-1) DIV 2 18446744073709551615 18446744073709551615 9223372036854775807 explain extended select (1 << 64)-1, ((1 << 64)-1) DIV 1, ((1 << 64)-1) DIV 2; 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 ((1 << 64) - 1) AS `(1 << 64)-1`,(((1 << 64) - 1) DIV 1) AS `((1 << 64)-1) DIV 1`,(((1 << 64) - 1) DIV 2) AS `((1 << 64)-1) DIV 2` create table t1 (a int); insert t1 values (1); select * from t1 where 1 xor 1; a explain extended select * from t1 where 1 xor 1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE Warnings: Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` select - a from t1; - a -1 explain extended select - a from t1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 system NULL NULL NULL NULL 1 Warnings: Note 1003 select -(`test`.`t1`.`a`) AS `- a` from `test`.`t1` drop table t1; select 5 between 0 and 10 between 0 and 1,(5 between 0 and 10) between 0 and 1; 5 between 0 and 10 between 0 and 1 (5 between 0 and 10) between 0 and 1 0 1 select 1 and 2 between 2 and 10, 2 between 2 and 10 and 1; 1 and 2 between 2 and 10 2 between 2 and 10 and 1 1 1 select 1 and 0 or 2, 2 or 1 and 0; 1 and 0 or 2 2 or 1 and 0 1 1 select _koi8r'a' = _koi8r'A'; _koi8r'a' = _koi8r'A' 1 select _koi8r'a' = _koi8r'A' COLLATE koi8r_general_ci; _koi8r'a' = _koi8r'A' COLLATE koi8r_general_ci 1 explain extended select _koi8r'a' = _koi8r'A' COLLATE koi8r_general_ci; 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 (_koi8r'a' = (_koi8r'A' collate koi8r_general_ci)) AS `_koi8r'a' = _koi8r'A' COLLATE koi8r_general_ci` select _koi8r'a' = _koi8r'A' COLLATE koi8r_bin; _koi8r'a' = _koi8r'A' COLLATE koi8r_bin 0 select _koi8r'a' COLLATE koi8r_general_ci = _koi8r'A'; _koi8r'a' COLLATE koi8r_general_ci = _koi8r'A' 1 select _koi8r'a' COLLATE koi8r_bin = _koi8r'A'; _koi8r'a' COLLATE koi8r_bin = _koi8r'A' 0 select _koi8r'a' COLLATE koi8r_bin = _koi8r'A' COLLATE koi8r_general_ci; ERROR HY000: Illegal mix of collations (koi8r_bin,EXPLICIT) and (koi8r_general_ci,EXPLICIT) for operation '=' select _koi8r'a' = _latin1'A'; ERROR HY000: Illegal mix of collations (koi8r_general_ci,COERCIBLE) and (latin1_swedish_ci,COERCIBLE) for operation '=' select strcmp(_koi8r'a', _koi8r'A'); strcmp(_koi8r'a', _koi8r'A') 0 select strcmp(_koi8r'a', _koi8r'A' COLLATE koi8r_general_ci); strcmp(_koi8r'a', _koi8r'A' COLLATE koi8r_general_ci) 0 select strcmp(_koi8r'a', _koi8r'A' COLLATE koi8r_bin); strcmp(_koi8r'a', _koi8r'A' COLLATE koi8r_bin) 1 select strcmp(_koi8r'a' COLLATE koi8r_general_ci, _koi8r'A'); strcmp(_koi8r'a' COLLATE koi8r_general_ci, _koi8r'A') 0 select strcmp(_koi8r'a' COLLATE koi8r_bin, _koi8r'A'); strcmp(_koi8r'a' COLLATE koi8r_bin, _koi8r'A') 1 select strcmp(_koi8r'a' COLLATE koi8r_general_ci, _koi8r'A' COLLATE koi8r_bin); ERROR HY000: Illegal mix of collations (koi8r_general_ci,EXPLICIT) and (koi8r_bin,EXPLICIT) for operation 'strcmp' select strcmp(_koi8r'a', _latin1'A'); ERROR HY000: Illegal mix of collations (koi8r_general_ci,COERCIBLE) and (latin1_swedish_ci,COERCIBLE) for operation 'strcmp' select _koi8r'a' LIKE _koi8r'A'; _koi8r'a' LIKE _koi8r'A' 1 select _koi8r'a' LIKE _koi8r'A' COLLATE koi8r_general_ci; _koi8r'a' LIKE _koi8r'A' COLLATE koi8r_general_ci 1 select _koi8r'a' LIKE _koi8r'A' COLLATE koi8r_bin; _koi8r'a' LIKE _koi8r'A' COLLATE koi8r_bin 0 select _koi8r'a' COLLATE koi8r_general_ci LIKE _koi8r'A'; _koi8r'a' COLLATE koi8r_general_ci LIKE _koi8r'A' 1 select _koi8r'a' COLLATE koi8r_bin LIKE _koi8r'A'; _koi8r'a' COLLATE koi8r_bin LIKE _koi8r'A' 0 select _koi8r'a' COLLATE koi8r_general_ci LIKE _koi8r'A' COLLATE koi8r_bin; ERROR HY000: Illegal mix of collations (koi8r_general_ci,EXPLICIT) and (koi8r_bin,EXPLICIT) for operation 'like' select _koi8r'a' LIKE _latin1'A'; ERROR HY000: Illegal mix of collations (koi8r_general_ci,COERCIBLE) and (latin1_swedish_ci,COERCIBLE) for operation 'like' CREATE TABLE t1 ( faq_group_id int(11) NOT NULL default '0', faq_id int(11) NOT NULL default '0', title varchar(240) default NULL, keywords text, description longblob, solution longblob, status tinyint(4) NOT NULL default '0', access_id smallint(6) default NULL, lang_id smallint(6) NOT NULL default '0', created datetime NOT NULL default '0000-00-00 00:00:00', updated datetime default NULL, last_access datetime default NULL, last_notify datetime default NULL, solved_count int(11) NOT NULL default '0', static_solved int(11) default NULL, solved_1 int(11) default NULL, solved_2 int(11) default NULL, solved_3 int(11) default NULL, solved_4 int(11) default NULL, solved_5 int(11) default NULL, expires datetime default NULL, notes text, assigned_to smallint(6) default NULL, assigned_group smallint(6) default NULL, last_edited_by smallint(6) default NULL, orig_ref_no varchar(15) binary default NULL, c$fundstate smallint(6) default NULL, c$contributor smallint(6) default NULL, UNIQUE KEY t1$faq_id (faq_id), KEY t1$group_id$faq_id (faq_group_id,faq_id), KEY t1$c$fundstate (c$fundstate) ) ENGINE=MyISAM; INSERT INTO t1 VALUES (82,82,'How to use the DynaVox Usage Counts Feature','usages count, number, corner, white, box, button','<as-html>\r\n<table width=\"100%\" border=\"0\">\r\n <tr>\r\n <td width=\"3%\">�</td>\r\n <td width=\"97%\">\r\n <h3><font face=\"Verdana, Arial, Helvetica, sans-serif\" color=\"#000000\">How \r\n To</font><!-- #BeginEditable \"CS_troubleshoot_question\" --><font face=\"Verdana, Arial, Helvetica, sans-serif\" color=\"#000099\"><font color=\"#000000\">: \r\n Display or Hide the Usage Counts to find out how many times each button is being selected. </font></font><!-- #EndEditable --></h3>\r\n </td>\r\n </tr>\r\n</table>','<as-html>\r\n <table width=\"100%\" border=\"0\">\r\n <tr>\r\n <td width=\"3%\">�</td>\r\n \r\n<td width=\"97%\"><!-- #BeginEditable \"CS_troubleshoot_answer\" --> \r\n \r\n<p><font color=\"#000000\" face=\"Verdana, Arial, Helvetica, sans-serif\">1. Select \r\n the <i>On/Setup</i> button to access the DynaVox Setup Menu.<br>\r\n 2. Select <b>Button Features.</b><br>\r\n 3. Below the <b>OK</b> button is the <b>Usage Counts</b> button.<br>\r\n a. If it says \"Hidden\" then the Usage Counts will not be displayed.<br>\r\n b. If it says \"Displayed\" then the Usage Counts will be shown.<br>\r\n c. Select the <b>Usage Counts</b> Option Ring once and it will toggle \r\n to the alternative option.<br>\r\n 4. Once the correct setting has been chosen, select <b>OK</b> to leave the <i>Button \r\n Features</i> menu.<br>\r\n 5. Select <b>OK</b> out of the <i>Setup</i> menu and return to the communication \r\n page.</font></p>\r\n <p><font color=\"#000000\" face=\"Verdana, Arial, Helvetica, sans-serif\">For \r\n further information on <i>Usage Counts,</i> see the <i>Button Features \r\n Menu Entry</i> in the DynaVox/DynaMyte Reference Manual.</font></p>\r\n<!-- #EndEditable --></td>\r\n </tr>\r\n</table>',4,1,1,'2001-11-16 16:43:34','2002-11-25 12:09:43','2003-07-24 01:04:48',NULL,11,NULL,0,0,0,0,0,NULL,NULL,NULL,NULL,11,NULL,NULL,NULL); CREATE TABLE t2 ( access_id smallint(6) NOT NULL default '0', name varchar(20) binary default NULL, rank smallint(6) NOT NULL default '0', KEY t2$access_id (access_id) ) ENGINE=MyISAM; INSERT INTO t2 VALUES (1,'Everyone',2),(2,'Help',3),(3,'Customer Support',1); SELECT f_acc.rank, a1.rank, a2.rank FROM t1 LEFT JOIN t1 f1 ON (f1.access_id=1 AND f1.faq_group_id = t1.faq_group_id) LEFT JOIN t2 a1 ON (a1.access_id = f1.access_id) LEFT JOIN t1 f2 ON (f2.access_id=3 AND f2.faq_group_id = t1.faq_group_id) LEFT JOIN t2 a2 ON (a2.access_id = f2.access_id), t2 f_acc WHERE LEAST(a1.rank,a2.rank) = f_acc.rank; rank rank rank 2 2 NULL DROP TABLE t1,t2; CREATE TABLE t1 (d varchar(6), k int); INSERT INTO t1 VALUES (NULL, 2); SELECT GREATEST(d,d) FROM t1 WHERE k=2; GREATEST(d,d) NULL DROP TABLE t1; select 1197.90 mod 50; 1197.90 mod 50 47.90 select 5.1 mod 3, 5.1 mod -3, -5.1 mod 3, -5.1 mod -3; 5.1 mod 3 5.1 mod -3 -5.1 mod 3 -5.1 mod -3 2.1 2.1 -2.1 -2.1 select 5 mod 3, 5 mod -3, -5 mod 3, -5 mod -3; 5 mod 3 5 mod -3 -5 mod 3 -5 mod -3 2 2 -2 -2