MDEV-13685 Can not replay binary log due to Illegal mix of collations...

MDEV-13685 Can not replay binary log due to Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8mb4_general_ci,COERCIBLE) for operation 'concat'

mysql-test/r/func_misc.result

@@ -1390,3 +1390,20 @@ DROP TABLE t2;
 
 # -- Done.
 
+#
+# MDEV-13685 Can not replay binary log due to Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8mb4_general_ci,COERCIBLE) for operation 'concat'
+#
+SET NAMES utf8;
+SELECT COERCIBILITY(NAME_CONST('name','test'));
+COERCIBILITY(NAME_CONST('name','test'))
+2
+SELECT COERCIBILITY(NAME_CONST('name',TIME'00:00:00'));
+COERCIBILITY(NAME_CONST('name',TIME'00:00:00'))
+5
+SELECT COERCIBILITY(NAME_CONST('name',15));
+COERCIBILITY(NAME_CONST('name',15))
+5
+SELECT CONCAT(NAME_CONST('name',15),'오');
+CONCAT(NAME_CONST('name',15),'오')
+15오
+SET NAMES latin1;

mysql-test/suite/rpl/r/rpl_sp_variables.result

+include/master-slave.inc
+[connection master]
+#
+# MDEV-13685 Can not replay binary log due to Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8mb4_general_ci,COERCIBLE) for operation 'concat'
+#
+SET NAMES utf8;
+CREATE TABLE t1 (a VARCHAR(10) CHARACTER SET utf8);
+CREATE PROCEDURE p1()
+BEGIN
+DECLARE v_id INT DEFAULT 2017;
+INSERT INTO test.t1 SELECT CONCAT(v_id, '오');
+END;
+$$
+CALL p1;
+SELECT * FROM t1;
+a
+2017오
+SET NAMES utf8;
+SELECT * FROM t1;
+a
+2017오
+DROP PROCEDURE p1;
+DROP TABLE t1;
+include/rpl_end.inc

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

+source include/master-slave.inc;
+
+--echo #
+--echo # MDEV-13685 Can not replay binary log due to Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8mb4_general_ci,COERCIBLE) for operation 'concat'
+--echo #
+
+connection master;
+SET NAMES utf8;
+CREATE TABLE t1 (a VARCHAR(10) CHARACTER SET utf8);
+DELIMITER $$;
+CREATE PROCEDURE p1()
+BEGIN
+  DECLARE v_id INT DEFAULT 2017;
+  INSERT INTO test.t1 SELECT CONCAT(v_id, '오');
+END;
+$$
+DELIMITER ;$$
+CALL p1;
+SELECT * FROM t1;
+sync_slave_with_master;
+SET NAMES utf8;
+SELECT * FROM t1;
+connection master;
+DROP PROCEDURE p1;
+DROP TABLE t1;
+sync_slave_with_master;
+
+--source include/rpl_end.inc

mysql-test/t/func_misc.test

@@ -1080,3 +1080,14 @@ DROP TABLE t2;
 --echo
 --echo # -- Done.
 --echo
+
+
+--echo #
+--echo # MDEV-13685 Can not replay binary log due to Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8mb4_general_ci,COERCIBLE) for operation 'concat'
+--echo #
+SET NAMES utf8;
+SELECT COERCIBILITY(NAME_CONST('name','test'));
+SELECT COERCIBILITY(NAME_CONST('name',TIME'00:00:00'));
+SELECT COERCIBILITY(NAME_CONST('name',15));
+SELECT CONCAT(NAME_CONST('name',15),'오');
+SET NAMES latin1;

sql/item.cc

@@ -1796,7 +1796,10 @@ bool Item_name_const::fix_fields(THD *thd, Item **ref)
   {
     set_name(item_name->ptr(), (uint) item_name->length(), system_charset_info);
   }
-  collation.set(value_item->collation.collation, DERIVATION_IMPLICIT);
+  if (value_item->collation.derivation == DERIVATION_NUMERIC)
+    collation.set_numeric();
+  else
+    collation.set(value_item->collation.collation, DERIVATION_IMPLICIT);
   max_length= value_item->max_length;
   decimals= value_item->decimals;
   fixed= 1;