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Fix for bug #6166: index prefix length of 0 not rejected

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gluh@gluh.mysql.r18.ru 2004-10-26 12:16:35 +04:00
parent 47788e9e07
commit 27a658b2d9
3 changed files with 26 additions and 1 deletions
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2
mysql-test/r/key.result
View file

@ -305,3 +305,5 @@ check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
drop table t1;
create table t1 (c char(10), index (c(0)));
ERROR HY000: Key part 'c' length cannot be 0

11
mysql-test/t/key.test
View file

@ -285,3 +285,14 @@ check table t1;
drop table t1;
#
# Bug 6166: index prefix length of 0 not rejected
#
# this test should fail in 5.0
# to fix it, remove #ifdef in
# file sql_yacc.yy(key_part)
# create dedicated error code for this and
# and change my_printf_error() to my_error
--error 1105
create table t1 (c char(10), index (c(0)));

14
sql/sql_yacc.yy
View file

@ -1817,7 +1817,19 @@ key_list:
key_part:
ident { $$=new key_part_spec($1.str); }
| ident '(' NUM ')' { $$=new key_part_spec($1.str,(uint) atoi($3.str)); };
| ident '(' NUM ')'
{
int key_part_len= atoi($3.str);
#ifdef MYSQL_VERSION_ID < 50000
if (!key_part_len)
{
my_printf_error(ER_UNKNOWN_ERROR,
"Key part '%s' length cannot be 0",
MYF(0), $1.str);
}
#endif
$$=new key_part_spec($1.str,(uint) key_part_len);
};
opt_ident:
/* empty */ { $$=(char*) 0; } /* Defaultlength */