BUG#18198: Less flexibility in defining partition functions

Changed test for functions if they are supported.
3 categories:
1) Fully supported
2) Supported for single character collations
3) Supported for binary collations


mysql-test/r/partition.result:
  Changed test case since no longer supported to use multicharacter collations
  in comparisons
mysql-test/t/partition.test:
  Changed test case since no longer supported to use multicharacter collations
  in comparisons
sql/item.h:
  Changed test for functions if they are supported.
  3 categories:
  1) Fully supported
  2) Supported for single character collations
  3) Supported for binary collations
sql/item_cmpfunc.h:
  Changed test for functions if they are supported.
  3 categories:
  1) Fully supported
  2) Supported for single character collations
  3) Supported for binary collations
sql/item_func.h:
  Changed test for functions if they are supported.
  3 categories:
  1) Fully supported
  2) Supported for single character collations
  3) Supported for binary collations
sql/item_strfunc.h:
  Changed test for functions if they are supported.
  3 categories:
  1) Fully supported
  2) Supported for single character collations
  3) Supported for binary collations
sql/item_timefunc.h:
  Changed test for functions if they are supported.
  3 categories:
  1) Fully supported
  2) Supported for single character collations
  3) Supported for binary collations
sql/item_xmlfunc.h:
  Changed test for functions if they are supported.
  3 categories:
  1) Fully supported
  2) Supported for single character collations
  3) Supported for binary collations
sql/partition_info.cc:
  Changed test for functions if they are supported.
  3 categories:
  1) Fully supported
  2) Supported for single character collations
  3) Supported for binary collations
sql/partition_info.h:
  Changed test for functions if they are supported.
  3 categories:
  1) Fully supported
  2) Supported for single character collations
  3) Supported for binary collations
sql/sql_partition.cc:
  Changed test for functions if they are supported.
  3 categories:
  1) Fully supported
  2) Supported for single character collations
  3) Supported for binary collations
sql/sql_table.cc:
  Changed test for functions if they are supported.
  3 categories:
  1) Fully supported
  2) Supported for single character collations
  3) Supported for binary collations

mysql-test/r/partition.result

@@ -742,7 +742,7 @@ t2	CREATE TABLE `t2` (
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1 COMMENT='no comment' PARTITION BY KEY (a) 
 drop table t2;
 create table t1 (s1 char(2) character set utf8)
-partition by list (case when s1 > 'cz' then 1 else 2 end)
+partition by list (cast(s1 as signed))
 (partition p1 values in (1),
 partition p2 values in (2));
 drop table t1;

mysql-test/t/partition.test

@@ -867,7 +867,7 @@ drop table t2;
 # Bug#14367: Partitions: crash if utf8 column
 #
 create table t1 (s1 char(2) character set utf8)
-partition by list (case when s1 > 'cz' then 1 else 2 end)
+partition by list (cast(s1 as signed))
 (partition p1 values in (1),
  partition p2 values in (2));
 drop table t1;

sql/item.h

@@ -789,7 +789,7 @@ public:
     Check if a partition function is allowed
     SYNOPSIS
       check_partition_func_processor()
-      bool_arg                        Return argument
+      int_arg                        Return argument
     RETURN VALUE
       0
     DESCRIPTION
@@ -806,8 +806,28 @@ public:
     whether this should be inherited to the new class. If not the function
     below should be defined in the new Item class.
   */
-  virtual bool check_partition_func_processor(byte *bool_arg)
-  { *(bool *)bool_arg= FALSE; return 0; }
+
+#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;
+  }
 
   virtual Item *equal_fields_propagator(byte * arg) { return this; }
   virtual Item *set_no_const_sub(byte *arg) { return this; }
@@ -1106,7 +1126,8 @@ public:
     Item::maybe_null= TRUE;
   }
 
-  bool check_partition_func_processor(byte *bool_arg) { return 0; }
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg); }
   bool fix_fields(THD *, Item **);
 
   enum Type type() const;
@@ -1153,7 +1174,7 @@ public:
   Item_num() {}                               /* Remove gcc warning */
   virtual Item_num *neg()= 0;
   Item *safe_charset_converter(CHARSET_INFO *tocs);
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 #define NO_CACHED_FIELD_INDEX ((uint)(-1))
@@ -1289,7 +1310,7 @@ public:
   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 *bool_arg) { return 0; }
+  bool check_partition_func_processor(byte *int_arg) { return 0; }
   void cleanup();
   bool result_as_longlong()
   {
@@ -1337,7 +1358,7 @@ public:
   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 *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 class Item_null_result :public Item_null
@@ -1350,8 +1371,8 @@ public:
   {
     save_in_field(result_field, no_conversions);
   }
-  bool check_partition_func_processor(byte *bool_arg)
-  { *(bool *)bool_arg= FALSE; return 0; }
+  bool check_partition_func_processor(byte *int_arg)
+  { *(int *)int_arg= PF_UNSAFE; return 0; }
 };  
 
 /* Item represents one placeholder ('?') of prepared statement */
@@ -1642,8 +1663,8 @@ public:
   {}
   void print(String *str) { str->append(func_name); }
   Item *safe_charset_converter(CHARSET_INFO *tocs);
-  bool check_partition_func_processor(byte *bool_arg)
-  { *(bool *)bool_arg= FALSE; return 0; }
+  bool check_partition_func_processor(byte *int_arg)
+  { *(int *)int_arg= PF_UNSAFE; return 0; }
 };
 
 
@@ -1721,7 +1742,7 @@ public:
   void print(String *str);
   // to prevent drop fixed flag (no need parent cleanup call)
   void cleanup() {}
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -1736,8 +1757,8 @@ public:
   {}
   Item *safe_charset_converter(CHARSET_INFO *tocs);
   void print(String *str) { str->append(func_name); }
-  bool check_partition_func_processor(byte *bool_arg)
-  { *(bool *)bool_arg= FALSE; return 0; }
+  bool check_partition_func_processor(byte *int_arg)
+  { *(int *)int_arg= PF_UNSAFE; return 0; }
 };
 
 
@@ -1750,8 +1771,8 @@ public:
                                                     &my_charset_bin)
   { max_length=19;}
   enum_field_types field_type() const { return MYSQL_TYPE_DATETIME; }
-  bool check_partition_func_processor(byte *bool_arg)
-  { *(bool *)bool_arg= FALSE; return 0; }
+  bool check_partition_func_processor(byte *int_arg)
+  { *(int *)int_arg= PF_UNSAFE; return 0; }
 };
 
 class Item_empty_string :public Item_string
@@ -1774,8 +1795,8 @@ public:
     unsigned_flag=1;
   }
   enum_field_types field_type() const { return int_field_type; }
-  bool check_partition_func_processor(byte *bool_arg)
-  { *(bool *)bool_arg= FALSE; return 0; }
+  bool check_partition_func_processor(byte *int_arg)
+  { *(int *)int_arg= PF_UNSAFE; return 0; }
 };
 
 
@@ -1799,7 +1820,8 @@ public:
   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 *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_binary_collation(int_arg);}
 };
 
 
@@ -2026,8 +2048,8 @@ public:
   }
   Item *new_item();
   virtual Item *real_item() { return ref; }
-  bool check_partition_func_processor(byte *bool_arg)
-  { *(bool *)bool_arg= FALSE; return 0; }
+  bool check_partition_func_processor(byte *int_arg)
+  { *(int *)int_arg= PF_UNSAFE; return 0; }
 };
 
 #ifdef MYSQL_SERVER

sql/item_cmpfunc.h

@@ -240,7 +240,8 @@ public:
   }
   Item *neg_transformer(THD *thd);
   virtual Item *negated_item();
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg); }
 };
 
 class Item_func_not :public Item_bool_func
@@ -251,7 +252,8 @@ public:
   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 *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg); }
 };
 
 class Item_maxmin_subselect;
@@ -466,7 +468,8 @@ public:
   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 *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg); }
 };
 
 
@@ -478,7 +481,8 @@ public:
   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 *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg); }
 };
 
 
@@ -541,7 +545,7 @@ public:
   const char *func_name() const { return "ifnull"; }
   Field *tmp_table_field(TABLE *table);
   uint decimal_precision() const;
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -582,7 +586,7 @@ public:
   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 *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -625,7 +629,8 @@ public:
   void print(String *str);
   Item *find_item(String *str);
   CHARSET_INFO *compare_collation() { return cmp_collation.collation; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg); }
 };
 
 
@@ -976,7 +981,8 @@ public:
   bool nulls_in_row();
   bool is_bool_func() { return 1; }
   CHARSET_INFO *compare_collation() { return cmp_collation.collation; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg); }
 };
 
 /* Functions used by where clause */
@@ -1018,7 +1024,7 @@ public:
   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 *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 /* Functions used by HAVING for rewriting IN subquery */
@@ -1040,8 +1046,8 @@ public:
   */
   table_map used_tables() const
     { return used_tables_cache | RAND_TABLE_BIT; }
-  bool check_partition_func_processor(byte *bool_arg)
-  { *(bool *)bool_arg= FALSE; return 0; }
+  bool check_partition_func_processor(byte *int_arg)
+  { *(int *)int_arg= PF_UNSAFE; return 0; }
 };
 
 
@@ -1064,7 +1070,7 @@ public:
   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 *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -1103,7 +1109,8 @@ public:
   const char *func_name() const { return "like"; }
   bool fix_fields(THD *thd, Item **ref);
   void cleanup();
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg); }
 };
 
 #ifdef USE_REGEX
@@ -1126,7 +1133,8 @@ public:
   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 *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg); }
 };
 
 #else
@@ -1183,7 +1191,8 @@ public:
   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 *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg); }
 };
 
 

sql/item_func.h

@@ -247,7 +247,7 @@ public:
   void fix_num_length_and_dec();
   void find_num_type();
   String *str_op(String *str) { DBUG_ASSERT(0); return 0; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -260,7 +260,7 @@ class Item_num_op :public Item_func_numhybrid
   void print(String *str) { print_op(str); }
   void find_num_type();
   String *str_op(String *str) { DBUG_ASSERT(0); return 0; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -311,7 +311,7 @@ public:
   { max_length=args[0]->max_length; unsigned_flag=0; }
   void print(String *str);
   uint decimal_precision() const { return args[0]->decimal_precision(); }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -345,7 +345,7 @@ public:
   void fix_length_and_dec() {};
   const char *func_name() const { return "decimal_typecast"; }
   void print(String *);
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -414,7 +414,7 @@ public:
   const char *func_name() const { return "DIV"; }
   void fix_length_and_dec();
   void print(String *str) { print_op(str); }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -487,7 +487,7 @@ public:
   Item_func_exp(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "exp"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -497,7 +497,7 @@ public:
   Item_func_ln(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "ln"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -508,7 +508,7 @@ public:
   Item_func_log(Item *a,Item *b) :Item_dec_func(a,b) {}
   double val_real();
   const char *func_name() const { return "log"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -518,7 +518,7 @@ public:
   Item_func_log2(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "log2"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -528,7 +528,7 @@ public:
   Item_func_log10(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "log10"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -538,7 +538,7 @@ public:
   Item_func_sqrt(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "sqrt"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -548,7 +548,7 @@ public:
   Item_func_pow(Item *a,Item *b) :Item_dec_func(a,b) {}
   double val_real();
   const char *func_name() const { return "pow"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -558,7 +558,7 @@ public:
   Item_func_acos(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "acos"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 class Item_func_asin :public Item_dec_func
@@ -567,7 +567,7 @@ public:
   Item_func_asin(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "asin"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 class Item_func_atan :public Item_dec_func
@@ -577,7 +577,7 @@ public:
   Item_func_atan(Item *a,Item *b) :Item_dec_func(a,b) {}
   double val_real();
   const char *func_name() const { return "atan"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 class Item_func_cos :public Item_dec_func
@@ -586,7 +586,7 @@ public:
   Item_func_cos(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "cos"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 class Item_func_sin :public Item_dec_func
@@ -595,7 +595,7 @@ public:
   Item_func_sin(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "sin"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 class Item_func_tan :public Item_dec_func
@@ -604,7 +604,7 @@ public:
   Item_func_tan(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "tan"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 class Item_func_integer :public Item_int_func
@@ -681,7 +681,7 @@ public:
   Item_func_sign(Item *a) :Item_int_func(a) {}
   const char *func_name() const { return "sign"; }
   longlong val_int();
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -696,7 +696,7 @@ public:
   const char *func_name() const { return name; }
   void fix_length_and_dec()
   { decimals= NOT_FIXED_DEC; max_length= float_length(decimals); }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -714,7 +714,7 @@ public:
   my_decimal *val_decimal(my_decimal *);
   void fix_length_and_dec();
   enum Item_result result_type () const { return cmp_type; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 class Item_func_min :public Item_func_min_max
@@ -740,7 +740,8 @@ public:
   longlong val_int();
   const char *func_name() const { return "length"; }
   void fix_length_and_dec() { max_length=10; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 class Item_func_bit_length :public Item_func_length
@@ -760,7 +761,8 @@ public:
   longlong val_int();
   const char *func_name() const { return "char_length"; }
   void fix_length_and_dec() { max_length=10; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 class Item_func_coercibility :public Item_int_func
@@ -771,7 +773,6 @@ public:
   const char *func_name() const { return "coercibility"; }
   void fix_length_and_dec() { max_length=10; maybe_null= 0; }
   table_map not_null_tables() const { return 0; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
 };
 
 class Item_func_locate :public Item_int_func
@@ -785,7 +786,8 @@ public:
   longlong val_int();
   void fix_length_and_dec();
   void print(String *str);
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 
@@ -810,7 +812,8 @@ public:
   longlong val_int();
   const char *func_name() const { return "ascii"; }
   void fix_length_and_dec() { max_length=3; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 class Item_func_ord :public Item_int_func
@@ -820,7 +823,8 @@ public:
   Item_func_ord(Item *a) :Item_int_func(a) {}
   longlong val_int();
   const char *func_name() const { return "ord"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 class Item_func_find_in_set :public Item_int_func
@@ -834,7 +838,8 @@ public:
   longlong val_int();
   const char *func_name() const { return "find_in_set"; }
   void fix_length_and_dec();
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 /* Base class for all bit functions: '~', '|', '^', '&', '>>', '<<' */
@@ -846,7 +851,7 @@ public:
   Item_func_bit(Item *a) :Item_int_func(a) {}
   void fix_length_and_dec() { unsigned_flag= 1; }
   void print(String *str) { print_op(str); }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 class Item_func_bit_or :public Item_func_bit
@@ -872,7 +877,7 @@ public:
   longlong val_int();
   const char *func_name() const { return "bit_count"; }
   void fix_length_and_dec() { max_length=2; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 class Item_func_shift_left :public Item_func_bit
@@ -1309,7 +1314,7 @@ public:
    longlong val_int();
    const char *func_name() const { return "inet_aton"; }
    void fix_length_and_dec() { decimals = 0; max_length = 21; maybe_null=1;}
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 

sql/item_strfunc.h

@@ -47,7 +47,8 @@ public:
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "md5"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 
@@ -58,7 +59,8 @@ public:
   String *val_str(String *);    
   void fix_length_and_dec();      
   const char *func_name() const { return "sha"; }	
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 class Item_func_aes_encrypt :public Item_str_func
@@ -89,7 +91,8 @@ public:
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "concat"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 class Item_func_concat_ws :public Item_str_func
@@ -110,7 +113,8 @@ public:
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "reverse"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 
@@ -148,7 +152,8 @@ protected:
 public:
   Item_str_conv(Item *item) :Item_str_func(item) {}
   String *val_str(String *);
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_binary_collation(int_arg);}
 };
 
 
@@ -212,7 +217,8 @@ public:
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "substr"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 
@@ -224,7 +230,8 @@ public:
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "substring_index"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 
@@ -239,7 +246,8 @@ public:
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "trim"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 
@@ -419,7 +427,8 @@ public:
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "soundex"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 
@@ -527,7 +536,8 @@ public:
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "rpad"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 
@@ -540,7 +550,8 @@ public:
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "lpad"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 
@@ -555,7 +566,8 @@ public:
     collation.set(default_charset());
     max_length= 64;
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 
@@ -572,7 +584,8 @@ public:
     decimals=0;
     max_length=args[0]->max_length*2*collation.collation->mbmaxlen;
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_binary_collation(int_arg);}
 };
 
 class Item_func_unhex :public Item_str_func
@@ -588,7 +601,8 @@ public:
     decimals=0;
     max_length=(1+args[0]->max_length)/2;
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_binary_collation(int_arg);}
 };
 
 
@@ -612,7 +626,8 @@ public:
   }
   void print(String *str);
   const char *func_name() const { return "cast_as_binary"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 
@@ -652,7 +667,7 @@ public:
   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 *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 class Item_func_quote :public Item_str_func
@@ -667,7 +682,7 @@ public:
     collation.set(args[0]->collation);
     max_length= args[0]->max_length * 2 + 2;
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 class Item_func_conv_charset :public Item_str_func
@@ -711,7 +726,6 @@ public:
   void fix_length_and_dec();
   const char *func_name() const { return "convert"; }
   void print(String *str);
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
 };
 
 class Item_func_set_collation :public Item_str_func
@@ -744,7 +758,6 @@ public:
      maybe_null= 0;
   };
   table_map not_null_tables() const { return 0; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
 };
 
 class Item_func_collation :public Item_str_func
@@ -760,7 +773,6 @@ public:
      maybe_null= 0;
   };
   table_map not_null_tables() const { return 0; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
 };
 
 class Item_func_crc32 :public Item_int_func
@@ -771,7 +783,8 @@ public:
   const char *func_name() const { return "crc32"; }
   void fix_length_and_dec() { max_length=10; }
   longlong val_int();
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 class Item_func_uncompressed_length : public Item_int_func
@@ -782,7 +795,8 @@ public:
   const char *func_name() const{return "uncompressed_length";}
   void fix_length_and_dec() { max_length=10; }
   longlong val_int();
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 #ifdef HAVE_COMPRESS
@@ -799,7 +813,8 @@ public:
   void fix_length_and_dec(){max_length= (args[0]->max_length*120)/100+12;}
   const char *func_name() const{return "compress";}
   String *val_str(String *) ZLIB_DEPENDED_FUNCTION
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 class Item_func_uncompress: public Item_str_func
@@ -810,7 +825,8 @@ public:
   void fix_length_and_dec(){max_length= MAX_BLOB_WIDTH;}
   const char *func_name() const{return "uncompress";}
   String *val_str(String *) ZLIB_DEPENDED_FUNCTION
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 #define UUID_LENGTH (8+1+4+1+4+1+4+1+12)

sql/item_timefunc.h

@@ -39,7 +39,7 @@ public:
   { 
     max_length=6*MY_CHARSET_BIN_MB_MAXLEN;
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -54,7 +54,7 @@ public:
     decimals=0;
     max_length=6*MY_CHARSET_BIN_MB_MAXLEN;
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -71,7 +71,7 @@ public:
     maybe_null=1; 
   }
   enum_monotonicity_info get_monotonicity_info() const;
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -87,7 +87,7 @@ public:
     max_length=2*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1; 
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -112,7 +112,7 @@ public:
     max_length=2*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1; 
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -145,7 +145,7 @@ public:
     max_length=3*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1; 
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -161,7 +161,7 @@ public:
     max_length=2*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1;
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -177,7 +177,7 @@ public:
     max_length=2*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1;
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -193,7 +193,7 @@ public:
      max_length=1*MY_CHARSET_BIN_MB_MAXLEN;
      maybe_null=1;
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -209,7 +209,7 @@ public:
     max_length=2*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1;
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -225,7 +225,7 @@ public:
     max_length=2*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1;
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 class Item_func_yearweek :public Item_int_func
@@ -240,7 +240,7 @@ public:
     max_length=6*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1;
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -257,7 +257,7 @@ public:
     max_length=4*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1;
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -287,7 +287,7 @@ public:
     max_length=1*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1;
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 class Item_func_dayname :public Item_func_weekday
@@ -320,7 +320,7 @@ public:
     decimals=0;
     max_length=10*MY_CHARSET_BIN_MB_MAXLEN;
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -335,7 +335,7 @@ public:
     decimals=0;
     max_length=10*MY_CHARSET_BIN_MB_MAXLEN;
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -545,7 +545,7 @@ public:
   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 *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -563,7 +563,7 @@ public:
   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 *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -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 *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -651,7 +651,7 @@ public:
     return tmp_table_field_from_field_type(table, 0);
   }
   bool result_as_longlong() { return TRUE; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -674,7 +674,7 @@ public:
   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 *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -692,7 +692,8 @@ 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 *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg); }
 };
 
 
@@ -729,7 +730,7 @@ public:
     max_length=args[0]->max_length;
     maybe_null= 1;
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -749,7 +750,8 @@ public:
   String *val_str(String *a);
   void fix_length_and_dec();
   void print(String *str);
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg); }
 };
 
 
@@ -829,7 +831,7 @@ public:
   }
   bool result_as_longlong() { return TRUE; }
   longlong val_int();
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -852,7 +854,7 @@ public:
   }
   void print(String *str);
   const char *func_name() const { return "add_time"; }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 class Item_func_timediff :public Item_str_func
@@ -892,7 +894,7 @@ public:
   {
     return tmp_table_field_from_field_type(table, 0);
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 class Item_func_microsecond :public Item_int_func
@@ -906,7 +908,7 @@ public:
     decimals=0;
     maybe_null=1;
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -924,7 +926,7 @@ public:
     maybe_null=1;
   }
   void print(String *str);
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 
@@ -971,7 +973,7 @@ public:
   {
     return tmp_table_field_from_field_type(table, 1);
   }
-  bool check_partition_func_processor(byte *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg) { return 0;}
 };
 
 

sql/item_xmlfunc.h

@@ -42,7 +42,8 @@ public:
   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 *bool_arg) { return 0;}
+  bool check_partition_func_processor(byte *int_arg)
+  { return safe_for_single_char_collation(int_arg);}
 };
 
 

sql/partition_info.cc

@@ -694,6 +694,7 @@ end:
     file                A reference to a handler of the table
     max_rows            Maximum number of rows stored in the table
     engine_type         Return value for used engine in partitions
+    check_partition_function Should we check the partition function
 
   RETURN VALUE
     TRUE                 Error, something went wrong
@@ -708,26 +709,42 @@ end:
 */
 
 bool partition_info::check_partition_info(THD *thd, handlerton **eng_type,
-                                          handler *file, ulonglong max_rows)
+                                          handler *file, ulonglong max_rows,
+                                          bool check_partition_function)
 {
   handlerton **engine_array= NULL;
   uint part_count= 0;
   uint i, tot_partitions;
   bool result= TRUE;
   char *same_name;
-  bool part_expression_ok= TRUE;
+  int part_expression_ok= PF_SAFE;
   DBUG_ENTER("partition_info::check_partition_info");
 
-  if (part_type != HASH_PARTITION || !list_of_part_fields)
-    part_expr->walk(&Item::check_partition_func_processor, 0,
-                    (byte*)(&part_expression_ok));
-  if (is_sub_partitioned() && !list_of_subpart_fields)
-    subpart_expr->walk(&Item::check_partition_func_processor, 0,
-                       (byte*)(&part_expression_ok));
-  if (!part_expression_ok)
+  pf_collation_allowed= PF_SAFE;
+  spf_collation_allowed= PF_SAFE;
+  if (check_partition_function)
   {
-    my_error(ER_PARTITION_FUNCTION_IS_NOT_ALLOWED, MYF(0));
-    goto end;
+    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;
+      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;
+    }
+    else
+      multi_char_collation_allowed= TRUE;
+    if (!pf_collation_allowed ||
+        !spf_collation_allowed)
+    {
+      my_error(ER_PARTITION_FUNCTION_IS_NOT_ALLOWED, MYF(0));
+      goto end;
+    }
   }
   if (unlikely(!is_sub_partitioned() && 
                !(use_default_subpartitions && use_default_no_subpartitions)))

sql/partition_info.h

@@ -188,6 +188,8 @@ public:
   bool is_auto_partitioned;
   bool from_openfrm;
   bool has_null_value;
+  char pf_collation_allowed;
+  char spf_collation_allowed;
 
 
   partition_info()
@@ -217,7 +219,9 @@ public:
     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)
+    has_null_value(FALSE),
+    pf_collation_allowed(0),
+    spf_collation_allowed(0)
   {
     all_fields_in_PF.clear_all();
     all_fields_in_PPF.clear_all();
@@ -250,7 +254,8 @@ public:
   bool check_range_constants();
   bool check_list_constants();
   bool check_partition_info(THD *thd, handlerton **eng_type,
-                            handler *file, ulonglong max_rows);
+                            handler *file, ulonglong max_rows,
+                            bool check_partition_function);
   void print_no_partition_found(TABLE *table);
 private:
   static int list_part_cmp(const void* a, const void* b);

sql/sql_partition.cc

@@ -525,6 +525,7 @@ static bool set_up_field_array(TABLE *table,
 }
 
 
+
 /*
   Create a field array including all fields of both the partitioning and the
   subpartitioning functions.
@@ -549,6 +550,7 @@ static bool create_full_part_field_array(TABLE *table,
                                          partition_info *part_info)
 {
   bool result= FALSE;
+  Field **ptr;
   DBUG_ENTER("create_full_part_field_array");
 
   if (!part_info->is_sub_partitioned())
@@ -558,7 +560,7 @@ static bool create_full_part_field_array(TABLE *table,
   }
   else
   {
-    Field **ptr, *field, **field_array;
+    Field *field, **field_array;
     uint no_part_fields=0, size_field_array;
     ptr= table->field;
     while ((field= *(ptr++)))
@@ -1369,6 +1371,38 @@ static uint32 get_part_id_from_linear_hash(longlong hash_value, uint mask,
   return part_id;
 }
 
+
+/*
+  Check that partition function do not contain any forbidden
+  character sets and collations.
+  SYNOPSIS
+    check_part_func_collation()
+    part_info                           Partition info
+    ptr                                 Array of Field pointers
+  RETURN VALUES
+    FALSE                               Success
+    TRUE                                Error
+*/
+
+static bool check_part_func_collation(int collation_allowed,
+                                      Field **ptr)
+{
+  Field *field;
+  while ((field= *(ptr++)))
+  {
+    if (field->result_type() == STRING_RESULT)
+    {
+      CHARSET_INFO *cs= ((Field_str*)field)->charset();
+      if (use_strnxfrm(cs) ||
+          (collation_allowed == PF_SAFE_BINARY_COLLATION &&
+          (!(cs->state & MY_CS_BINSORT))))
+        return TRUE;
+    }
+  }
+  return FALSE;
+}
+
+
 /*
   fix partition functions
 
@@ -1514,6 +1548,17 @@ 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)) ||
+      (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)))
+  {
+    my_error(ER_PARTITION_FUNCTION_IS_NOT_ALLOWED, MYF(0));
+    goto end;
+  }
   if (unlikely(create_full_part_field_array(table, part_info)))
     goto end;
   if (unlikely(check_primary_key(table)))
@@ -4545,7 +4590,7 @@ the generated partition syntax in a correct manner.
         tab_part_info->use_default_no_subpartitions= FALSE;
       }
       if (tab_part_info->check_partition_info(thd, (handlerton**)NULL,
-                                              table->file, ULL(0)))
+                                              table->file, ULL(0), FALSE))
       {
         DBUG_RETURN(TRUE);
       }

sql/sql_table.cc

@@ -3145,7 +3145,7 @@ bool mysql_create_table_internal(THD *thd,
     DBUG_PRINT("info", ("db_type = %d",
                          ha_legacy_type(part_info->default_engine_type)));
     if (part_info->check_partition_info(thd, &engine_type, file,
-                                        create_info->max_rows))
+                                        create_info->max_rows, TRUE))
       goto err;
     part_info->default_engine_type= engine_type;