From: Date: October 21 2005 3:02am Subject: bk commit into 5.0 tree (andrey:1.2025) BUG#12595 List-Archive: http://lists.mysql.com/internals/31333 X-Bug: 12595 Message-Id: <20051021010203.6BAB92FDB5@hristov.com> Below is the list of changes that have just been committed into a local 5.0 repository of andrey. When andrey does a push these changes will be propagated to the main repository and, within 24 hours after the push, to the public repository. For information on how to access the public repository see http://dev.mysql.com/doc/mysql/en/installing-source-tree.html ChangeSet 1.2025 05/10/21 04:01:52 andrey@lmy004. +8 -0 fix for bug #12595 (ESCAPE must be exactly 1 character long) ESCAPE has length of 1 if specified and sql_mode is NO_BACKSLASH_ESCAPES or has length of 0 or 1 in every other situation. (approved patch applied on a up-to-date tree re-commit) sql/sql_yacc.yy 1.435 05/10/21 04:01:32 andrey@lmy004. +8 -4 initialize Lex->escape_used and then use it when reducing. This is needed as fix for bug #12595 to distinguish between situation where ESCAPE was found and when not because internally we may pass a string an empty string and there is no other way to find out whether this is correct or not in case of NO_BACKSLASH_ESCAPES mode, which allows only length of 1 if ESCAPE is part of the SQL statement. sql/sql_lex.h 1.202 05/10/21 04:01:32 andrey@lmy004. +2 -0 new variable used for transfering information when reducing in the grammar. sql/sql_lex.cc 1.172 05/10/21 04:01:32 andrey@lmy004. +1 -0 initialized variable used to transfer information during parsing up in the stack when reducing in the grammar sql/sql_help.cc 1.51 05/10/21 04:01:32 andrey@lmy004. +2 -1 pass FALSE for escape_used_in_parsing because we want the default mode of no error checking - our internal code. sql/item_cmpfunc.h 1.116 05/10/21 04:01:31 andrey@lmy004. +5 -2 pass variable from the parsing stage - whether ESCAPE clause was found in the statement sql/item_cmpfunc.cc 1.183 05/10/21 04:01:31 andrey@lmy004. +9 -0 if ESCAPE was in the statement check whether its length is different than 1. In NO_BACKSLASH_ESCAPES mode only length of 1 is allowed, otherwise the length could be 0 or 1 character (code point in the sense of Unicode). mysql-test/t/select.test 1.87 05/10/21 04:01:30 andrey@lmy004. +39 -0 test for bug #12595 (ESCAPE must be exactly one character long) mysql-test/r/select.result 1.106 05/10/21 04:01:30 andrey@lmy004. +57 -0 results of test for bug 12595 # This is a BitKeeper patch. What follows are the unified diffs for the # set of deltas contained in the patch. The rest of the patch, the part # that BitKeeper cares about, is below these diffs. # User: andrey # Host: lmy004. # Root: /work/mysql-5.0-bug12595-4 --- 1.182/sql/item_cmpfunc.cc 2005-10-13 17:36:42 +03:00 +++ 1.183/sql/item_cmpfunc.cc 2005-10-21 04:01:31 +03:00 @@ -2958,6 +2958,15 @@ String *escape_str= escape_item->val_str(&tmp_value1); if (escape_str) { + if (escape_used_in_parsing && ( + (((thd->variables.sql_mode & MODE_NO_BACKSLASH_ESCAPES) && + escape_str->numchars() != 1) || + escape_str->numchars() > 1))) + { + my_error(ER_WRONG_ARGUMENTS,MYF(0),"ESCAPE"); + return TRUE; + } + if (use_mb(cmp.cmp_collation.collation)) { CHARSET_INFO *cs= escape_str->charset(); --- 1.115/sql/item_cmpfunc.h 2005-09-29 04:05:43 +03:00 +++ 1.116/sql/item_cmpfunc.h 2005-10-21 04:01:31 +03:00 @@ -985,13 +985,16 @@ enum { alphabet_size = 256 }; Item *escape_item; + + bool escape_used_in_parsing; public: int escape; - Item_func_like(Item *a,Item *b, Item *escape_arg) + Item_func_like(Item *a,Item *b, Item *escape_arg, bool escape_used) :Item_bool_func2(a,b), canDoTurboBM(FALSE), pattern(0), pattern_len(0), - bmGs(0), bmBc(0), escape_item(escape_arg) {} + bmGs(0), bmBc(0), escape_item(escape_arg), + escape_used_in_parsing(escape_used) {} longlong val_int(); enum Functype functype() const { return LIKE_FUNC; } optimize_type select_optimize() const; --- 1.171/sql/sql_lex.cc 2005-10-13 15:00:23 +03:00 +++ 1.172/sql/sql_lex.cc 2005-10-21 04:01:32 +03:00 @@ -175,6 +175,7 @@ lex->spcont= NULL; lex->proc_list.first= 0; lex->query_tables_own_last= 0; + lex->escape_used= FALSE; if (lex->sroutines.records) my_hash_reset(&lex->sroutines); --- 1.201/sql/sql_lex.h 2005-10-13 14:44:33 +03:00 +++ 1.202/sql/sql_lex.h 2005-10-21 04:01:32 +03:00 @@ -894,6 +894,8 @@ during replication ("LOCAL 'filename' REPLACE INTO" part). */ uchar *fname_start, *fname_end; + + bool escape_used; st_lex(); --- 1.434/sql/sql_yacc.yy 2005-10-13 17:27:29 +03:00 +++ 1.435/sql/sql_yacc.yy 2005-10-21 04:01:32 +03:00 @@ -4314,9 +4314,9 @@ { $$= new Item_func_eq(new Item_func_soundex($1), new Item_func_soundex($4)); } | bit_expr LIKE simple_expr opt_escape - { $$= new Item_func_like($1,$3,$4); } + { $$= new Item_func_like($1,$3,$4,Lex->escape_used); } | bit_expr not LIKE simple_expr opt_escape - { $$= new Item_func_not(new Item_func_like($1,$4,$5)); } + { $$= new Item_func_not(new Item_func_like($1,$4,$5, Lex->escape_used)); } | bit_expr REGEXP bit_expr { $$= new Item_func_regex($1,$3); } | bit_expr not REGEXP bit_expr { $$= negate_expression(YYTHD, new Item_func_regex($1,$4)); } @@ -5678,10 +5678,14 @@ ; opt_escape: - ESCAPE_SYM simple_expr { $$= $2; } + ESCAPE_SYM simple_expr + { + Lex->escape_used= TRUE; + $$= $2; + } | /* empty */ { - + Lex->escape_used= FALSE; $$= ((YYTHD->variables.sql_mode & MODE_NO_BACKSLASH_ESCAPES) ? new Item_string("", 0, &my_charset_latin1) : new Item_string("\\", 1, &my_charset_latin1)); --- 1.105/mysql-test/r/select.result 2005-10-14 00:04:45 +03:00 +++ 1.106/mysql-test/r/select.result 2005-10-21 04:01:30 +03:00 @@ -2965,6 +2965,63 @@ SELECT IFNULL(NULL, NULL); IFNULL(NULL, NULL) NULL +SET @OLD_SQL_MODE12595=@@SQL_MODE, @@SQL_MODE=''; +SHOW LOCAL VARIABLES LIKE 'SQL_MODE'; +Variable_name Value +sql_mode +CREATE TABLE BUG_12595(a varchar(100)); +INSERT INTO BUG_12595 VALUES ('hakan%'), ('hakank'), ("ha%an"); +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan\%'; +a +hakan% +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan*%' ESCAPE '*'; +a +hakan% +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan**%' ESCAPE '**'; +ERROR HY000: Incorrect arguments to ESCAPE +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan%' ESCAPE ''; +a +hakan% +hakank +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan\%' ESCAPE ''; +a +SELECT * FROM BUG_12595 WHERE a LIKE 'ha\%an' ESCAPE 0x5c; +a +ha%an +SELECT * FROM BUG_12595 WHERE a LIKE 'ha%%an' ESCAPE '%'; +a +ha%an +SELECT * FROM BUG_12595 WHERE a LIKE 'ha\%an' ESCAPE '\\'; +a +ha%an +SELECT * FROM BUG_12595 WHERE a LIKE 'ha|%an' ESCAPE '|'; +a +ha%an +SET @@SQL_MODE='NO_BACKSLASH_ESCAPES'; +SHOW LOCAL VARIABLES LIKE 'SQL_MODE'; +Variable_name Value +sql_mode NO_BACKSLASH_ESCAPES +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan\%'; +a +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan*%' ESCAPE '*'; +a +hakan% +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan**%' ESCAPE '**'; +ERROR HY000: Incorrect arguments to ESCAPE +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan\%' ESCAPE '\\'; +ERROR HY000: Incorrect arguments to ESCAPE +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan%' ESCAPE ''; +ERROR HY000: Incorrect arguments to ESCAPE +SELECT * FROM BUG_12595 WHERE a LIKE 'ha\%an' ESCAPE 0x5c; +a +ha%an +SELECT * FROM BUG_12595 WHERE a LIKE 'ha|%an' ESCAPE '|'; +a +ha%an +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan\n%' ESCAPE '\n'; +ERROR HY000: Incorrect arguments to ESCAPE +SET @@SQL_MODE=@OLD_SQL_MODE12595; +DROP TABLE BUG_12595; create table t1 (a char(1)); create table t2 (a char(1)); insert into t1 values ('a'),('b'),('c'); --- 1.86/mysql-test/t/select.test 2005-10-14 00:04:46 +03:00 +++ 1.87/mysql-test/t/select.test 2005-10-21 04:01:30 +03:00 @@ -2518,6 +2518,45 @@ SELECT IFNULL(NULL, NULL); # +# BUG #12595 (ESCAPE must be exactly one) +# +SET @OLD_SQL_MODE12595=@@SQL_MODE, @@SQL_MODE=''; +SHOW LOCAL VARIABLES LIKE 'SQL_MODE'; + +CREATE TABLE BUG_12595(a varchar(100)); +INSERT INTO BUG_12595 VALUES ('hakan%'), ('hakank'), ("ha%an"); +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan\%'; +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan*%' ESCAPE '*'; +-- error 1210 +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan**%' ESCAPE '**'; +# this should work when sql_mode is not NO_BACKSLASH_ESCAPES +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan%' ESCAPE ''; +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan\%' ESCAPE ''; +SELECT * FROM BUG_12595 WHERE a LIKE 'ha\%an' ESCAPE 0x5c; +SELECT * FROM BUG_12595 WHERE a LIKE 'ha%%an' ESCAPE '%'; +SELECT * FROM BUG_12595 WHERE a LIKE 'ha\%an' ESCAPE '\\'; +SELECT * FROM BUG_12595 WHERE a LIKE 'ha|%an' ESCAPE '|'; + +SET @@SQL_MODE='NO_BACKSLASH_ESCAPES'; +SHOW LOCAL VARIABLES LIKE 'SQL_MODE'; +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan\%'; +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan*%' ESCAPE '*'; +-- error 1210 +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan**%' ESCAPE '**'; +-- error 1210 +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan\%' ESCAPE '\\'; +#this gives an error when NO_BACKSLASH_ESCAPES is set +-- error 1210 +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan%' ESCAPE ''; +SELECT * FROM BUG_12595 WHERE a LIKE 'ha\%an' ESCAPE 0x5c; +SELECT * FROM BUG_12595 WHERE a LIKE 'ha|%an' ESCAPE '|'; +-- error 1210 +SELECT * FROM BUG_12595 WHERE a LIKE 'hakan\n%' ESCAPE '\n'; + +SET @@SQL_MODE=@OLD_SQL_MODE12595; +DROP TABLE BUG_12595; + +# # Bug #6495 Illogical requirement for column qualification in NATURAL join # --- 1.50/sql/sql_help.cc 2005-09-14 01:41:38 +03:00 +++ 1.51/sql/sql_help.cc 2005-10-21 04:01:32 +03:00 @@ -599,7 +599,8 @@ { Item *cond= new Item_func_like(new Item_field(pfname), new Item_string(mask,mlen,pfname->charset()), - new Item_string("\\",1,&my_charset_latin1)); + new Item_string("\\",1,&my_charset_latin1), + FALSE); if (thd->is_fatal_error) return 0; // OOM return prepare_simple_select(thd, cond, table, error);