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merge 5.1 => 5.5

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This commit is contained in:
Tor Didriksen 2012-09-25 16:17:13 +02:00
commit 0aa08e6bac
1 changed files with 19 additions and 0 deletions
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19
sql/item_cmpfunc.cc
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@ -3156,6 +3156,15 @@ void Item_func_case::fix_length_and_dec()
return;
}
}
/*
Set cmp_context of all WHEN arguments. This prevents
Item_field::equal_fields_propagator() from transforming a
zerofill argument into a string constant. Such a change would
require rebuilding cmp_items.
*/
for (i= 0; i < ncases; i+= 2)
args[i]->cmp_context= item_cmp_type(left_result_type,
args[i]->result_type());
}
if (else_expr_num == -1 || args[else_expr_num]->maybe_null)
@ -4143,6 +4152,16 @@ void Item_func_in::fix_length_and_dec()
}
}
}
/*
Set cmp_context of all arguments. This prevents
Item_field::equal_fields_propagator() from transforming a zerofill integer
argument into a string constant. Such a change would require rebuilding
cmp_itmes.
*/
for (arg= args + 1, arg_end= args + arg_count; arg != arg_end ; arg++)
{
arg[0]->cmp_context= item_cmp_type(left_result_type, arg[0]->result_type());
}
max_length= 1;
}