automerge

mysql-test/r/partition.result

@@ -1982,5 +1982,14 @@ SELECT b, c FROM t1 WHERE b = 1 GROUP BY b, c;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	range	bc	bc	10	NULL	7	Using where; Using index for group-by
 DROP TABLE t1;
+#
+# Bug #45807: crash accessing partitioned table and sql_mode 
+#   contains ONLY_FULL_GROUP_BY
+#
+SET SESSION SQL_MODE='ONLY_FULL_GROUP_BY';
+CREATE TABLE t1(id INT,KEY(id)) ENGINE=MYISAM 
+PARTITION BY HASH(id) PARTITIONS 2;
+DROP TABLE t1;
+SET SESSION SQL_MODE=DEFAULT;
 End of 5.1 tests
 SET @@global.general_log= @old_general_log;

mysql-test/suite/rpl/t/rpl_sp.test

@@ -642,3 +642,6 @@ drop procedure ` mysqltestbug36570_p2`;
 drop function mysqltestbug36570_f1;
 --echo End of 5.0 tests
 --echo End of 5.1 tests
+
+# Cleanup
+sync_slave_with_master;

mysql-test/t/partition.test

@@ -1976,6 +1976,17 @@ SELECT b, c FROM t1 WHERE b = 1 GROUP BY b, c;
 
 DROP TABLE t1;
 
+--echo #
+--echo # Bug #45807: crash accessing partitioned table and sql_mode 
+--echo #   contains ONLY_FULL_GROUP_BY
+--echo #
+
+SET SESSION SQL_MODE='ONLY_FULL_GROUP_BY';
+CREATE TABLE t1(id INT,KEY(id)) ENGINE=MYISAM 
+  PARTITION BY HASH(id) PARTITIONS 2;
+DROP TABLE t1;
+SET SESSION SQL_MODE=DEFAULT;
+
 --echo End of 5.1 tests
 
 SET @@global.general_log= @old_general_log;

sql/item.cc

@@ -4406,16 +4406,22 @@ bool Item_field::fix_fields(THD *thd, Item **reference)
       Fields from outer selects added to the aggregate function
       outer_fields list as its unknown at the moment whether it's
       aggregated or not.
+      We're using either the select lex of the cached table (if present)
+      or the field's resolution context. context->select_lex is 
+      safe for use because it's either the SELECT we want to use 
+      (the current level) or a stub added by non-SELECT queries.
     */
+    SELECT_LEX *select_lex= cached_table ? 
+      cached_table->select_lex : context->select_lex;
     if (!thd->lex->in_sum_func)
-      cached_table->select_lex->full_group_by_flag|= NON_AGG_FIELD_USED;
+      select_lex->full_group_by_flag|= NON_AGG_FIELD_USED;
     else
     {
       if (outer_fixed)
         thd->lex->in_sum_func->outer_fields.push_back(this);
       else if (thd->lex->in_sum_func->nest_level !=
           thd->lex->current_select->nest_level)
-        cached_table->select_lex->full_group_by_flag|= NON_AGG_FIELD_USED;
+        select_lex->full_group_by_flag|= NON_AGG_FIELD_USED;
     }
   }
   return FALSE;

sql/sql_partition.cc

@@ -918,6 +918,9 @@ bool fix_fields_part_func(THD *thd, Item* func_expr, TABLE *table,
     Set-up the TABLE_LIST object to be a list with a single table
     Set the object to zero to create NULL pointers and set alias
     and real name to table name and get database name from file name.
+    TODO: Consider generalizing or refactoring Lex::add_table_to_list() so
+    it can be used in all places where we create TABLE_LIST objects.
+    Also consider creating appropriate constructors for TABLE_LIST.
   */
 
   bzero((void*)&tables, sizeof(TABLE_LIST));
@@ -925,6 +928,13 @@ bool fix_fields_part_func(THD *thd, Item* func_expr, TABLE *table,
   tables.table= table;
   tables.next_local= 0;
   tables.next_name_resolution_table= 0;
+  /*
+    Cache the table in Item_fields. All the tables can be cached except
+    the trigger pseudo table.
+  */
+  tables.cacheable_table= TRUE;
+  context= thd->lex->current_context();
+  tables.select_lex= context->select_lex;
   strmov(db_name_string, table->s->normalized_path.str);
   dir_length= dirname_length(db_name_string);
   db_name_string[dir_length - 1]= 0;
@@ -932,7 +942,6 @@ bool fix_fields_part_func(THD *thd, Item* func_expr, TABLE *table,
   db_name= &db_name_string[home_dir_length];
   tables.db= db_name;
 
-  context= thd->lex->current_context();
   table->map= 1; //To ensure correct calculation of const item
   table->get_fields_in_item_tree= TRUE;
   save_table_list= context->table_list;
@@ -965,7 +974,7 @@ bool fix_fields_part_func(THD *thd, Item* func_expr, TABLE *table,
   save_use_only_table_context= thd->lex->use_only_table_context;
   thd->lex->use_only_table_context= TRUE;
   
-  error= func_expr->fix_fields(thd, (Item**)0);
+  error= func_expr->fix_fields(thd, (Item**)&func_expr);
 
   thd->lex->use_only_table_context= save_use_only_table_context;