BUG#18198: Partition function handling

Review fixes

sql/item.h

@@ -807,26 +807,10 @@ class Item {
     below should be defined in the new Item class.
   */
 
-#define PF_SAFE_BINARY_COLLATION 3
-#define PF_SAFE_SINGLE_CHAR_COLLATION 2
-#define PF_SAFE 1
-#define PF_UNSAFE 0
-  bool safe_for_binary_collation(byte *int_arg)
-  {
-    if (*(int *)int_arg != PF_UNSAFE)
-      *(int*)int_arg= PF_SAFE_BINARY_COLLATION;
-    return 0;
-  }
-  bool safe_for_single_char_collation(byte *int_arg)
-  {
-    if (*(int*)int_arg == PF_SAFE)
-      *(int*)int_arg= PF_SAFE_SINGLE_CHAR_COLLATION;
-    return 0;
-  }
   virtual bool check_partition_func_processor(byte *int_arg)
   {
-    *(int *)int_arg= PF_UNSAFE;
-    return 0;
+    *(int *)int_arg= 0;
+    return FALSE;
   }
 
   virtual Item *equal_fields_propagator(byte * arg) { return this; }
@@ -1126,8 +1110,7 @@ class Item_name_const : public Item
     Item::maybe_null= TRUE;
   }
 
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg); }
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
   bool fix_fields(THD *, Item **);
 
   enum Type type() const;
@@ -1174,7 +1157,7 @@ class Item_num: public Item
   Item_num() {}                               /* Remove gcc warning */
   virtual Item_num *neg()= 0;
   Item *safe_charset_converter(CHARSET_INFO *tocs);
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 #define NO_CACHED_FIELD_INDEX ((uint)(-1))
@@ -1310,7 +1293,7 @@ class Item_field :public Item_ident
   bool collect_item_field_processor(byte * arg);
   bool find_item_in_field_list_processor(byte *arg);
   bool register_field_in_read_map(byte *arg);
-  bool check_partition_func_processor(byte *int_arg) { return 0; }
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
   void cleanup();
   bool result_as_longlong()
   {
@@ -1358,7 +1341,7 @@ class Item_null :public Item
   bool is_null() { return 1; }
   void print(String *str) { str->append(STRING_WITH_LEN("NULL")); }
   Item *safe_charset_converter(CHARSET_INFO *tocs);
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 class Item_null_result :public Item_null
@@ -1372,7 +1355,7 @@ class Item_null_result :public Item_null
     save_in_field(result_field, no_conversions);
   }
   bool check_partition_func_processor(byte *int_arg)
-  { *(int *)int_arg= PF_UNSAFE; return 0; }
+  { *(int *)int_arg= 0; return FALSE; }
 };  
 
 /* Item represents one placeholder ('?') of prepared statement */
@@ -1664,7 +1647,7 @@ class Item_static_float_func :public Item_float
   void print(String *str) { str->append(func_name); }
   Item *safe_charset_converter(CHARSET_INFO *tocs);
   bool check_partition_func_processor(byte *int_arg)
-  { *(int *)int_arg= PF_UNSAFE; return 0; }
+  { *(int *)int_arg= 0; return FALSE; }
 };
 
 
@@ -1742,7 +1725,7 @@ class Item_string :public Item
   void print(String *str);
   // to prevent drop fixed flag (no need parent cleanup call)
   void cleanup() {}
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -1758,7 +1741,7 @@ class Item_static_string_func :public Item_string
   Item *safe_charset_converter(CHARSET_INFO *tocs);
   void print(String *str) { str->append(func_name); }
   bool check_partition_func_processor(byte *int_arg)
-  { *(int *)int_arg= PF_UNSAFE; return 0; }
+  { *(int *)int_arg= 0; return FALSE; }
 };
 
 
@@ -1772,7 +1755,7 @@ class Item_datetime :public Item_string
   { max_length=19;}
   enum_field_types field_type() const { return MYSQL_TYPE_DATETIME; }
   bool check_partition_func_processor(byte *int_arg)
-  { *(int *)int_arg= PF_UNSAFE; return 0; }
+  { *(int *)int_arg= 0; return FALSE; }
 };
 
 class Item_empty_string :public Item_string
@@ -1796,7 +1779,7 @@ class Item_return_int :public Item_int
   }
   enum_field_types field_type() const { return int_field_type; }
   bool check_partition_func_processor(byte *int_arg)
-  { *(int *)int_arg= PF_UNSAFE; return 0; }
+  { *(int *)int_arg= 0; return FALSE; }
 };
 
 
@@ -1820,8 +1803,7 @@ class Item_hex_string: public Item
   void cleanup() {}
   bool eq(const Item *item, bool binary_cmp) const;
   virtual Item *safe_charset_converter(CHARSET_INFO *tocs);
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_binary_collation(int_arg);}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 
@@ -2049,7 +2031,7 @@ class Item_int_with_ref :public Item_int
   Item *new_item();
   virtual Item *real_item() { return ref; }
   bool check_partition_func_processor(byte *int_arg)
-  { *(int *)int_arg= PF_UNSAFE; return 0; }
+  { *(int *)int_arg= 0; return FALSE; }
 };
 
 #ifdef MYSQL_SERVER

sql/item_cmpfunc.h

@@ -240,8 +240,7 @@ class Item_bool_rowready_func2 :public Item_bool_func2
   }
   Item *neg_transformer(THD *thd);
   virtual Item *negated_item();
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg); }
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 class Item_func_not :public Item_bool_func
@@ -252,8 +251,7 @@ class Item_func_not :public Item_bool_func
   enum Functype functype() const { return NOT_FUNC; }
   const char *func_name() const { return "not"; }
   Item *neg_transformer(THD *thd);
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg); }
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 class Item_maxmin_subselect;
@@ -468,8 +466,7 @@ class Item_func_between :public Item_func_opt_neg
   bool is_bool_func() { return 1; }
   CHARSET_INFO *compare_collation() { return cmp_collation.collation; }
   uint decimal_precision() const { return 1; }
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg); }
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 
@@ -481,8 +478,7 @@ class Item_func_strcmp :public Item_bool_func2
   optimize_type select_optimize() const { return OPTIMIZE_NONE; }
   const char *func_name() const { return "strcmp"; }
   void print(String *str) { Item_func::print(str); }
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg); }
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 
@@ -545,7 +541,7 @@ class Item_func_ifnull :public Item_func_coalesce
   const char *func_name() const { return "ifnull"; }
   Field *tmp_table_field(TABLE *table);
   uint decimal_precision() const;
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 
@@ -586,7 +582,7 @@ class Item_func_nullif :public Item_bool_func2
   void print(String *str) { Item_func::print(str); }
   table_map not_null_tables() const { return 0; }
   bool is_null();
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 
@@ -629,8 +625,7 @@ class Item_func_case :public Item_func
   void print(String *str);
   Item *find_item(String *str);
   CHARSET_INFO *compare_collation() { return cmp_collation.collation; }
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg); }
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 
@@ -981,8 +976,7 @@ class Item_func_in :public Item_func_opt_neg
   bool nulls_in_row();
   bool is_bool_func() { return 1; }
   CHARSET_INFO *compare_collation() { return cmp_collation.collation; }
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg); }
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 /* Functions used by where clause */
@@ -1024,7 +1018,7 @@ class Item_func_isnull :public Item_bool_func
   optimize_type select_optimize() const { return OPTIMIZE_NULL; }
   Item *neg_transformer(THD *thd);
   CHARSET_INFO *compare_collation() { return args[0]->collation.collation; }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 /* Functions used by HAVING for rewriting IN subquery */
@@ -1047,7 +1041,7 @@ class Item_is_not_null_test :public Item_func_isnull
   table_map used_tables() const
     { return used_tables_cache | RAND_TABLE_BIT; }
   bool check_partition_func_processor(byte *int_arg)
-  { *(int *)int_arg= PF_UNSAFE; return 0; }
+  { *(int *)int_arg= 0; return FALSE; }
 };
 
 
@@ -1070,7 +1064,7 @@ class Item_func_isnotnull :public Item_bool_func
   void print(String *str);
   CHARSET_INFO *compare_collation() { return args[0]->collation.collation; }
   void top_level_item() { abort_on_null=1; }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 
@@ -1109,8 +1103,7 @@ class Item_func_like :public Item_bool_func2
   const char *func_name() const { return "like"; }
   bool fix_fields(THD *thd, Item **ref);
   void cleanup();
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg); }
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 #ifdef USE_REGEX
@@ -1133,8 +1126,7 @@ class Item_func_regex :public Item_bool_func
   const char *func_name() const { return "regexp"; }
   void print(String *str) { print_op(str); }
   CHARSET_INFO *compare_collation() { return cmp_collation.collation; }
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_binary_collation(int_arg); }
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 #else
@@ -1191,8 +1183,7 @@ class Item_cond :public Item_bool_func
   Item *transform(Item_transformer transformer, byte *arg);
   void traverse_cond(Cond_traverser, void *arg, traverse_order order);
   void neg_arguments(THD *thd);
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg); }
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 

sql/item_strfunc.h

@@ -47,8 +47,7 @@ class Item_func_md5 :public Item_str_func
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "md5"; }
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg);}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 
@@ -89,8 +88,7 @@ class Item_func_concat :public Item_str_func
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "concat"; }
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg);}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 class Item_func_concat_ws :public Item_str_func
@@ -111,8 +109,7 @@ class Item_func_reverse :public Item_str_func
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "reverse"; }
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg);}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 
@@ -150,8 +147,7 @@ class Item_str_conv :public Item_str_func
 public:
   Item_str_conv(Item *item) :Item_str_func(item) {}
   String *val_str(String *);
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_binary_collation(int_arg);}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 
@@ -419,8 +415,7 @@ class Item_func_soundex :public Item_str_func
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "soundex"; }
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg);}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 
@@ -528,8 +523,7 @@ class Item_func_rpad :public Item_str_func
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "rpad"; }
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg);}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 
@@ -542,8 +536,7 @@ class Item_func_lpad :public Item_str_func
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "lpad"; }
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg);}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 
@@ -558,8 +551,7 @@ class Item_func_conv :public Item_str_func
     collation.set(default_charset());
     max_length= 64;
   }
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg);}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 
@@ -576,8 +568,7 @@ class Item_func_hex :public Item_str_func
     decimals=0;
     max_length=args[0]->max_length*2*collation.collation->mbmaxlen;
   }
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_binary_collation(int_arg);}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 class Item_func_unhex :public Item_str_func
@@ -593,8 +584,7 @@ class Item_func_unhex :public Item_str_func
     decimals=0;
     max_length=(1+args[0]->max_length)/2;
   }
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_binary_collation(int_arg);}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 
@@ -618,8 +608,7 @@ class Item_func_binary :public Item_str_func
   }
   void print(String *str);
   const char *func_name() const { return "cast_as_binary"; }
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg);}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 
@@ -659,7 +648,7 @@ class Item_func_inet_ntoa : public Item_str_func
   String* val_str(String* str);
   const char *func_name() const { return "inet_ntoa"; }
   void fix_length_and_dec() { decimals = 0; max_length=3*8+7; }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 class Item_func_quote :public Item_str_func
@@ -674,7 +663,7 @@ class Item_func_quote :public Item_str_func
     collation.set(args[0]->collation);
     max_length= args[0]->max_length * 2 + 2;
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 class Item_func_conv_charset :public Item_str_func
@@ -775,8 +764,7 @@ class Item_func_crc32 :public Item_int_func
   const char *func_name() const { return "crc32"; }
   void fix_length_and_dec() { max_length=10; }
   longlong val_int();
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg);}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 class Item_func_uncompressed_length : public Item_int_func

sql/item_timefunc.h

@@ -39,7 +39,7 @@ class Item_func_period_add :public Item_int_func
   { 
     max_length=6*MY_CHARSET_BIN_MB_MAXLEN;
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -54,7 +54,7 @@ class Item_func_period_diff :public Item_int_func
     decimals=0;
     max_length=6*MY_CHARSET_BIN_MB_MAXLEN;
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -71,7 +71,7 @@ class Item_func_to_days :public Item_int_func
     maybe_null=1; 
   }
   enum_monotonicity_info get_monotonicity_info() const;
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -87,7 +87,7 @@ class Item_func_dayofmonth :public Item_int_func
     max_length=2*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1; 
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -112,7 +112,7 @@ class Item_func_month :public Item_func
     max_length=2*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1; 
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -145,7 +145,7 @@ class Item_func_dayofyear :public Item_int_func
     max_length=3*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1; 
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -161,7 +161,7 @@ class Item_func_hour :public Item_int_func
     max_length=2*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1;
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -177,7 +177,7 @@ class Item_func_minute :public Item_int_func
     max_length=2*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1;
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -193,7 +193,7 @@ class Item_func_quarter :public Item_int_func
      max_length=1*MY_CHARSET_BIN_MB_MAXLEN;
      maybe_null=1;
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -209,7 +209,7 @@ class Item_func_second :public Item_int_func
     max_length=2*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1;
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -225,7 +225,7 @@ class Item_func_week :public Item_int_func
     max_length=2*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1;
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 class Item_func_yearweek :public Item_int_func
@@ -240,7 +240,7 @@ class Item_func_yearweek :public Item_int_func
     max_length=6*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1;
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -257,7 +257,7 @@ class Item_func_year :public Item_int_func
     max_length=4*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1;
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -287,7 +287,7 @@ class Item_func_weekday :public Item_func
     max_length=1*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1;
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 class Item_func_dayname :public Item_func_weekday
@@ -320,7 +320,7 @@ class Item_func_unix_timestamp :public Item_int_func
     decimals=0;
     max_length=10*MY_CHARSET_BIN_MB_MAXLEN;
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -335,7 +335,7 @@ class Item_func_time_to_sec :public Item_int_func
     decimals=0;
     max_length=10*MY_CHARSET_BIN_MB_MAXLEN;
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -545,7 +545,7 @@ class Item_func_from_days :public Item_date
   Item_func_from_days(Item *a) :Item_date(a) {}
   const char *func_name() const { return "from_days"; }
   bool get_date(TIME *res, uint fuzzy_date);
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -563,7 +563,7 @@ class Item_func_date_format :public Item_str_func
   void fix_length_and_dec();
   uint format_length(const String *format);
   bool eq(const Item *item, bool binary_cmp) const;
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -582,7 +582,7 @@ class Item_func_from_unixtime :public Item_date_func
   const char *func_name() const { return "from_unixtime"; }
   void fix_length_and_dec();
   bool get_date(TIME *res, uint fuzzy_date);
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -651,7 +651,7 @@ class Item_func_sec_to_time :public Item_str_func
     return tmp_table_field_from_field_type(table, 0);
   }
   bool result_as_longlong() { return TRUE; }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -674,7 +674,7 @@ class Item_date_add_interval :public Item_date_func
   bool get_date(TIME *res, uint fuzzy_date);
   bool eq(const Item *item, bool binary_cmp) const;
   void print(String *str);
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -692,8 +692,7 @@ class Item_extract :public Item_int_func
   void fix_length_and_dec();
   bool eq(const Item *item, bool binary_cmp) const;
   void print(String *str);
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg); }
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -730,7 +729,7 @@ class Item_typecast_maybe_null :public Item_typecast
     max_length=args[0]->max_length;
     maybe_null= 1;
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -750,8 +749,7 @@ class Item_char_typecast :public Item_typecast
   String *val_str(String *a);
   void fix_length_and_dec();
   void print(String *str);
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg); }
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -831,7 +829,7 @@ class Item_func_makedate :public Item_str_func
   }
   bool result_as_longlong() { return TRUE; }
   longlong val_int();
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -854,7 +852,7 @@ class Item_func_add_time :public Item_str_func
   }
   void print(String *str);
   const char *func_name() const { return "add_time"; }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 class Item_func_timediff :public Item_str_func
@@ -894,7 +892,7 @@ class Item_func_maketime :public Item_str_func
   {
     return tmp_table_field_from_field_type(table, 0);
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 class Item_func_microsecond :public Item_int_func
@@ -908,7 +906,7 @@ class Item_func_microsecond :public Item_int_func
     decimals=0;
     maybe_null=1;
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -926,7 +924,7 @@ class Item_func_timestamp_diff :public Item_int_func
     maybe_null=1;
   }
   void print(String *str);
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 
@@ -973,7 +971,7 @@ class Item_func_str_to_date :public Item_str_func
   {
     return tmp_table_field_from_field_type(table, 1);
   }
-  bool check_partition_func_processor(byte *int_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE;}
 };
 
 

sql/item_xmlfunc.h

@@ -42,8 +42,7 @@ class Item_func_xml_extractvalue: public Item_xml_str_func
   Item_func_xml_extractvalue(Item *a,Item *b) :Item_xml_str_func(a,b) {}
   const char *func_name() const { return "extractvalue"; }
   String *val_str(String *);
-  bool check_partition_func_processor(byte *int_arg)
-  { return safe_for_single_char_collation(int_arg);}
+  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
 };
 
 

sql/partition_info.cc

@@ -718,25 +718,26 @@ bool partition_info::check_partition_info(THD *thd, handlerton **eng_type,
   uint i, tot_partitions;
   bool result= TRUE;
   char *same_name;
-  int part_expression_ok= PF_SAFE;
   DBUG_ENTER("partition_info::check_partition_info");
 
-  pf_collation_allowed= PF_SAFE;
-  spf_collation_allowed= PF_SAFE;
   if (check_partition_function)
   {
+    int part_expression_ok= 1;
+    int pf_collation_allowed= 1;
+    int spf_collation_allowed= 1;
+
     if (part_type != HASH_PARTITION || !list_of_part_fields)
     {
       part_expr->walk(&Item::check_partition_func_processor, 0,
                       (byte*)(&part_expression_ok));
-      pf_collation_allowed= (char)part_expression_ok;
-      part_expression_ok= PF_SAFE;
+      pf_collation_allowed= part_expression_ok;
+      part_expression_ok= 1;
       if (is_sub_partitioned() && !list_of_subpart_fields)
       {
         subpart_expr->walk(&Item::check_partition_func_processor, 0,
                            (byte*)(&part_expression_ok));
       }
-      spf_collation_allowed= (char)part_expression_ok;
+      spf_collation_allowed= part_expression_ok;
     }
     if (!pf_collation_allowed ||
         !spf_collation_allowed)

sql/partition_info.h

@@ -188,8 +188,6 @@ class partition_info : public Sql_alloc
   bool is_auto_partitioned;
   bool from_openfrm;
   bool has_null_value;
-  char pf_collation_allowed;
-  char spf_collation_allowed;
 
 
   partition_info()
@@ -219,9 +217,7 @@ class partition_info : public Sql_alloc
     list_of_part_fields(FALSE), list_of_subpart_fields(FALSE),
     linear_hash_ind(FALSE), fixed(FALSE),
     is_auto_partitioned(FALSE), from_openfrm(FALSE),
-    has_null_value(FALSE),
-    pf_collation_allowed(0),
-    spf_collation_allowed(0)
+    has_null_value(FALSE)
   {
     all_fields_in_PF.clear_all();
     all_fields_in_PPF.clear_all();

sql/sql_partition.cc

@@ -1376,7 +1376,7 @@ static uint32 get_part_id_from_linear_hash(longlong hash_value, uint mask,
   Check that partition function do not contain any forbidden
   character sets and collations.
   SYNOPSIS
-    check_part_func_collation()
+    check_part_func_fields()
     part_info                           Partition info
     ptr                                 Array of Field pointers
   RETURN VALUES
@@ -1384,19 +1384,24 @@ static uint32 get_part_id_from_linear_hash(longlong hash_value, uint mask,
     TRUE                                Error
 */
 
-static bool check_part_func_collation(int collation_allowed,
-                                      Field **ptr)
+static bool check_part_func_fields(Field **ptr)
 {
   Field *field;
   while ((field= *(ptr++)))
   {
-    if (field->result_type() == STRING_RESULT)
+    /*
+      For CHAR/VARCHAR fields we need to take special precautions.
+      Binary collation with CHAR is automatically supported. Other
+      types need some kind of standardisation function handling
+    */
+    if (field->type() == MYSQL_TYPE_STRING ||
+        field->type() == MYSQL_TYPE_VARCHAR)
     {
       CHARSET_INFO *cs= ((Field_str*)field)->charset();
-      if (use_strnxfrm(cs) ||
-          (collation_allowed == PF_SAFE_BINARY_COLLATION &&
-          (!(cs->state & MY_CS_BINSORT))))
-        return TRUE;
+      if (field->type() == MYSQL_TYPE_STRING &&
+          cs->state & MY_CS_BINSORT)
+        return FALSE;
+      return TRUE;
     }
   }
   return FALSE;
@@ -1548,13 +1553,9 @@ bool fix_partition_func(THD *thd, TABLE *table,
       goto end;
     }
   }
-  if (((part_info->pf_collation_allowed != PF_SAFE) &&
-        check_part_func_collation(part_info->pf_collation_allowed,
-                                  part_info->part_field_array)) ||
+  if ((check_part_func_fields(part_info->part_field_array)) ||
       (part_info->is_sub_partitioned() &&
-       part_info->spf_collation_allowed != PF_SAFE &&
-       check_part_func_collation(part_info->spf_collation_allowed,
-                                 part_info->subpart_field_array)))
+       check_part_func_fields(part_info->subpart_field_array)))
   {
     my_error(ER_PARTITION_FUNCTION_IS_NOT_ALLOWED, MYF(0));
     goto end;

sql/sql_yacc.yy

@@ -3619,7 +3619,7 @@ part_bit_expr:
         {
           Item *part_expr= $1;
           bool not_corr_func;
-          bool part_expression_ok= TRUE;
+          int part_expression_ok= 1;
           LEX *lex= Lex;
           THD *thd= YYTHD;
           longlong item_value;