From ccc051cd40bb58e66bf99ae471a4346be01be3c0 Mon Sep 17 00:00:00 2001 From: unknown Date: Fri, 21 Oct 2005 04:01:52 +0300 Subject: 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) mysql-test/r/select.result: results of test for bug 12595 mysql-test/t/select.test: test for bug #12595 (ESCAPE must be exactly one character long) sql/item_cmpfunc.cc: 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). sql/item_cmpfunc.h: pass variable from the parsing stage - whether ESCAPE clause was found in the statement sql/sql_help.cc: pass FALSE for escape_used_in_parsing because we want the default mode of no error checking - our internal code. sql/sql_lex.cc: initialized variable used to transfer information during parsing up in the stack when reducing in the grammar sql/sql_lex.h: new variable used for transfering information when reducing in the grammar. sql/sql_yacc.yy: 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_help.cc | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'sql/sql_help.cc') diff --git a/sql/sql_help.cc b/sql/sql_help.cc index f4d835541cf..b47412981ea 100644 --- a/sql/sql_help.cc +++ b/sql/sql_help.cc @@ -599,7 +599,8 @@ SQL_SELECT *prepare_select_for_name(THD *thd, const char *mask, uint mlen, { 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); -- cgit v1.2.1