Fixed error handling to be able do not interrupt update (907) (SCRUM)

fixed bug of current select pointer in subselect execution
fixed layuot


mysql-test/r/subselect.result:
  test of update with IGNORE option and error in subselect
mysql-test/t/subselect.test:
  test of update with IGNORE option and error in subselect
sql/item_subselect.cc:
  fixed bug of current select pointer
sql/mysqld.cc:
  error converting to warnings if hd->lex.current_select->no_error id true
  layout fixed
sql/sql_lex.cc:
  initialization
sql/sql_lex.h:
  flag which force converting errors to warnings
sql/sql_select.cc:
  switch on error convering to warnings in select executing if IGNORE option present

1 files changed, 14 insertions, 0 deletions

diff --git a/mysql-test/t/subselect.test b/mysql-test/t/subselect.test
index 1528f53ff0d..0131c807b68 100644
--- a/mysql-test/t/subselect.test
+++ b/mysql-test/t/subselect.test
@@ -732,3 +732,17 @@ CREATE TABLE t1 (
 INSERT INTO t1 VALUES (1,0,NULL,NULL),(2,0,NULL,NULL);
 SELECT DISTINCT REF_ID FROM t1 WHERE ID= (SELECT DISTINCT REF_ID FROM t1 WHERE ID=2);
 DROP TABLE t1;
+
+#
+# uninterruptable update
+#
+create table t1 (a int, b int);
+create table t2 (a int, b int);
+
+insert into t1 values (1,0), (2,0), (3,0);
+insert into t2 values (1,1), (2,1), (3,1), (2,2);
+
+update ignore t1 set b=(select b from t2 where t1.a=t2.a);
+select * from t1;
+
+drop table t1, t2;