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Fixed two bugs related to column level constraints

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- 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
This commit is contained in:
Monty
2019-02-13 18:21:19 +02:00
parent 44898d28f0
commit 438811b4b2
4 changed files with 55 additions and 8 deletions
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20
mysql-test/main/constraints.test
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@ -102,3 +102,23 @@ SELECT * FROM long_enough_name AS tbl;
SHOW CREATE TABLE long_enough_name;
DROP TABLE long_enough_name;
#
# Check that we don't loose constraints as part of CREATE ... SELECT
#
create table t1 (a int check (a>10)) select 100 as 'a';
show create table t1;
drop table t1;
#
# Check that we constraints on field with default expressions work
#
create table t1 (a text default(length(now())) check (length(a) > 1));
insert into t1 values ();
insert into t1 values ("ccc");
--error ER_CONSTRAINT_FAILED
insert into t1 values ("");
select * from t1;
drop table t1;