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func_str.result, func_str.test:

Browse source 
Adding test case.
item_strfunc.cc:
  bug#11728 string function LEFT, strange undocumented behaviour
  Fixing LEFT and RIGHT return NULL if the second
  argument is NULL.


sql/item_strfunc.cc:
  bug#11728 string function LEFT, strange undocumented behaviour
  Fixing LEFT and RIGHT return NULL if the second
  argument is NULL.
mysql-test/t/func_str.test:
  Adding test case.
mysql-test/r/func_str.result:
  Adding test case.
This commit is contained in:
unknown 2006-07-07 17:06:30 +05:00
commit 613cbb621e
3 changed files with 10 additions and 2 deletions
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4
sql/item_strfunc.cc
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@ -1038,7 +1038,7 @@ String *Item_func_left::val_str(String *str)
long length =(long) args[1]->val_int();
uint char_pos;
if ((null_value=args[0]->null_value))
if ((null_value=(args[0]->null_value || args[1]->null_value)))
return 0;
if (length <= 0)
return &my_empty_string;
@ -1078,7 +1078,7 @@ String *Item_func_right::val_str(String *str)
String *res =args[0]->val_str(str);
long length =(long) args[1]->val_int();
if ((null_value=args[0]->null_value))
if ((null_value=(args[0]->null_value || args[1]->null_value)))
return 0; /* purecov: inspected */
if (length <= 0)
return &my_empty_string; /* purecov: inspected */