Fixed two bugs related to column level constraints

- CREATE TABLE ... SELECT drops constraints for columns that
  are both in the create and select part.
  - Fixed by copying the constraint in
    Column_definiton::redefine_stage1_common()
- If one has both a default expression and check constraint for a
  column, one can get the error "Expression for field `a` is refering
  to uninitialized field `a`.
  - Fixed by ignoring default expressions for current column when checking
    for CHECK constraint

1 files changed, 1 insertions, 0 deletions

diff --git a/sql/field.cc b/sql/field.cc
index fbaf3c6ea91..a20525b2764 100644
--- a/sql/field.cc
+++ b/sql/field.cc
@@ -11047,6 +11047,7 @@ Column_definition::redefine_stage1_common(const Column_definition *dup_field,
   interval=     dup_field->interval;
   vcol_info=    dup_field->vcol_info;
   invisible=    dup_field->invisible;
+  check_constraint= dup_field->check_constraint;
 }