BUG#18198: Partition function handling

Fixes of after review fixes

mysql-test/r/partition_hash.result

 drop table if exists t1;
+create table t1 (a varchar(10) charset latin1 collate latin1_bin)
+partition by hash(length(a))
+partitions 10;
+insert into t1 values (''),(' '),('a'),('a '),('a  ');
+explain partitions select * from t1 where a='a ';
+id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	p0	ALL	NULL	NULL	NULL	NULL	5	Using where
+explain partitions select * from t1 where a='a';
+id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	p0	ALL	NULL	NULL	NULL	NULL	5	Using where
+explain partitions select * from t1 where a='a ' OR a='a';
+id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	p0	ALL	NULL	NULL	NULL	NULL	5	Using where
+drop table t1;
 create table t1 (a int unsigned)
 partition by hash(a div 2)
 partitions 4;

mysql-test/r/partition_range.result

 drop table if exists t1;
 create table t1 (a varchar(10) charset latin1 collate latin1_bin, b int)
 partition by range (length(a) * b)
-(partition p0 values less than (2), partition p1 values less than (10));
+(partition p0 values less than (2), partition p1 values less than (400));
 insert into t1 values ('a ', 2),('a',3);
 drop table t1;
 create table t1 (a varchar(10) charset latin1 collate latin1_bin, b int)
 partition by range (b* length(a) * b)
-(partition p0 values less than (2), partition p1 values less than (10));
+(partition p0 values less than (2), partition p1 values less than (400));
 insert into t1 values ('a ', 2),('a',3);
 drop table t1;
 create table t1 (a varchar(10) charset latin1 collate latin1_bin,
 b varchar(10) charset latin1 collate latin1_bin)
 partition by range (length(b) * length(a))
-(partition p0 values less than (2), partition p1 values less than (10));
+(partition p0 values less than (2), partition p1 values less than (400));
 insert into t1 values ('a ', 'b  '),('a','b');
 drop table t1;
 create table t1 (a varchar(10) charset latin1 collate latin1_bin,
 b varchar(10) charset latin1 collate latin1_bin)
 partition by range (length(a) * length(b))
-(partition p0 values less than (2), partition p1 values less than (10));
+(partition p0 values less than (2), partition p1 values less than (400));
 insert into t1 values ('a ', 'b  '),('a','b');
 drop table t1;
 create table t1 (a varchar(10) charset latin1 collate latin1_bin,
 b varchar(10) charset latin1 collate latin1_bin, c int)
 partition by range (length(a) * c)
-(partition p0 values less than (2), partition p1 values less than (10));
+(partition p0 values less than (2), partition p1 values less than (400));
 insert into t1 values ('a ', 'b  ', 2),('a','b', 3);
 drop table t1;
 create table t1 (a varchar(10) charset latin1 collate latin1_bin,
 b varchar(10) charset latin1 collate latin1_bin, c int)
 partition by range (c * length(a))
-(partition p0 values less than (2), partition p1 values less than (10));
+(partition p0 values less than (2), partition p1 values less than (400));
 insert into t1 values ('a ', 'b  ', 2),('a','b', 3);
 drop table t1;
 create table t1 (a int unsigned)

mysql-test/t/partition_range.test

@@ -14,41 +14,41 @@ drop table if exists t1;
 #
 create table t1 (a varchar(10) charset latin1 collate latin1_bin, b int)
 partition by range (length(a) * b)
-(partition p0 values less than (2), partition p1 values less than (10));
+(partition p0 values less than (2), partition p1 values less than (400));
 insert into t1 values ('a ', 2),('a',3);
 drop table t1;
 
 create table t1 (a varchar(10) charset latin1 collate latin1_bin, b int)
 partition by range (b* length(a) * b)
-(partition p0 values less than (2), partition p1 values less than (10));
+(partition p0 values less than (2), partition p1 values less than (400));
 insert into t1 values ('a ', 2),('a',3);
 drop table t1;
 
 create table t1 (a varchar(10) charset latin1 collate latin1_bin,
                  b varchar(10) charset latin1 collate latin1_bin)
 partition by range (length(b) * length(a))
-(partition p0 values less than (2), partition p1 values less than (10));
+(partition p0 values less than (2), partition p1 values less than (400));
 insert into t1 values ('a ', 'b  '),('a','b');
 drop table t1;
 
 create table t1 (a varchar(10) charset latin1 collate latin1_bin,
                  b varchar(10) charset latin1 collate latin1_bin)
 partition by range (length(a) * length(b))
-(partition p0 values less than (2), partition p1 values less than (10));
+(partition p0 values less than (2), partition p1 values less than (400));
 insert into t1 values ('a ', 'b  '),('a','b');
 drop table t1;
 
 create table t1 (a varchar(10) charset latin1 collate latin1_bin,
                  b varchar(10) charset latin1 collate latin1_bin, c int)
 partition by range (length(a) * c)
-(partition p0 values less than (2), partition p1 values less than (10));
+(partition p0 values less than (2), partition p1 values less than (400));
 insert into t1 values ('a ', 'b  ', 2),('a','b', 3);
 drop table t1;
 
 create table t1 (a varchar(10) charset latin1 collate latin1_bin,
                  b varchar(10) charset latin1 collate latin1_bin, c int)
 partition by range (c * length(a))
-(partition p0 values less than (2), partition p1 values less than (10));
+(partition p0 values less than (2), partition p1 values less than (400));
 insert into t1 values ('a ', 'b  ', 2),('a','b', 3);
 drop table t1;
 

sql/ha_ndbcluster.cc

@@ -1899,7 +1899,10 @@ int ha_ndbcluster::peek_indexed_rows(const byte *record)
       error= m_part_info->get_partition_id(m_part_info, &part_id, &func_value);
       dbug_tmp_restore_column_map(table->read_set, old_map);
       if (error)
+      {
+        m_part_info->err_value= func_value;
         DBUG_RETURN(error);
+      }
       op->setPartitionId(part_id);
     }
   }
@@ -2534,7 +2537,10 @@ int ha_ndbcluster::write_row(byte *record)
     error= m_part_info->get_partition_id(m_part_info, &part_id, &func_value);
     dbug_tmp_restore_column_map(table->read_set, old_map);
     if (error)
+    {
+      m_part_info->err_value= func_value;
       DBUG_RETURN(error);
+    }
     op->setPartitionId(part_id);
   }
 
@@ -2726,6 +2732,7 @@ int ha_ndbcluster::update_row(const byte *old_data, byte *new_data)
                                    m_part_info, &old_part_id, &new_part_id,
                                    &func_value)))
   {
+    m_part_info->err_value= func_value;
     DBUG_RETURN(error);
   }
 

sql/ha_partition.cc

@@ -2670,7 +2670,10 @@ int ha_partition::write_row(byte * buf)
 #endif
   dbug_tmp_restore_column_map(table->read_set, old_map);
   if (unlikely(error))
+  {
+    m_part_info->err_value= func_value;
     DBUG_RETURN(error);
+  }
   m_last_part= part_id;
   DBUG_PRINT("info", ("Insert in partition %d", part_id));
   DBUG_RETURN(m_file[part_id]->write_row(buf));
@@ -2719,6 +2722,7 @@ int ha_partition::update_row(const byte *old_data, byte *new_data)
                                    m_part_info, &old_part_id, &new_part_id,
                                    &func_value)))
   {
+    m_part_info->err_value= func_value;
     DBUG_RETURN(error);
   }
 

sql/partition_info.cc

@@ -855,7 +855,7 @@ void partition_info::print_no_partition_found(TABLE *table)
   if (part_expr->null_value)
     buf_ptr= (char*)"NULL";
   else
-    longlong2str(part_expr->val_int(), buf,
+    longlong2str(err_value, buf,
                  part_expr->unsigned_flag ? 10 : -10);
   my_error(ER_NO_PARTITION_FOR_GIVEN_VALUE, MYF(0), buf_ptr);
   dbug_tmp_restore_column_map(table->read_set, old_map);

sql/partition_info.h

@@ -150,7 +150,8 @@ public:
   /********************************************
    * INTERVAL ANALYSIS ENDS 
    ********************************************/
-  
+
+  longlong err_value;
   char* part_info_string;
 
   char *part_func_string;
@@ -227,7 +228,7 @@ public:
     restore_full_part_field_ptrs(NULL),
     part_expr(NULL), subpart_expr(NULL), item_free_list(NULL),
     first_log_entry(NULL), exec_log_entry(NULL), frm_log_entry(NULL),
-    list_array(NULL),
+    list_array(NULL), err_value(0),
     part_info_string(NULL),
     part_func_string(NULL), subpart_func_string(NULL),
     part_state(NULL),

sql/sql_partition.cc

@@ -2771,8 +2771,8 @@ notfound:
 
 
 int get_partition_id_range(partition_info *part_info,
-                            uint32 *part_id,
-                            longlong *func_value)
+                           uint32 *part_id,
+                           longlong *func_value)
 {
   longlong *range_array= part_info->range_int_array;
   uint max_partition= part_info->no_parts - 1;