mirror of
https://github.com/MariaDB/server.git
synced 2025-11-28 17:36:30 +03:00
a1c36f2e15
* sys fields are NULL by default (with exceptions, see comment about NOT_NULL_FLAG in #77); * error codes renamed, messages cleared out; * SHOW CREATE TABLE fixed; * set_max() fix; * redundant flag setters/getters removed; * flags are set in sql_yacc.yy, redundant copy_info_about_generated_fields() eliminated.
69 lines
1.9 KiB
Plaintext
69 lines
1.9 KiB
Plaintext
create table t(
|
|
a int,
|
|
b int without system versioning
|
|
) with system versioning;
|
|
insert into t values(1, 2);
|
|
insert into t values(3, 4);
|
|
select * from t;
|
|
a b
|
|
1 2
|
|
3 4
|
|
select a from t for system_time as of timestamp now(6);
|
|
a
|
|
1
|
|
3
|
|
select a, b, b+0 from t for system_time as of timestamp now(6);
|
|
a b b+0
|
|
1 NULL NULL
|
|
3 NULL NULL
|
|
Warnings:
|
|
Warning 4075 Attempt to read unversioned field `b` in historical query
|
|
select * from t for system_time as of timestamp now(6);
|
|
a b
|
|
1 NULL
|
|
3 NULL
|
|
Warnings:
|
|
Warning 4075 Attempt to read unversioned field `b` in historical query
|
|
select count(*) from t group by b for system_time as of timestamp now(6);
|
|
count(*)
|
|
2
|
|
Warnings:
|
|
Warning 4075 Attempt to read unversioned field `b` in historical query
|
|
select * from t for system_time as of timestamp now(6) order by b asc;
|
|
a b
|
|
1 NULL
|
|
3 NULL
|
|
Warnings:
|
|
Warning 4075 Attempt to read unversioned field `b` in historical query
|
|
select * from t for system_time as of timestamp now(6) order by b desc;
|
|
a b
|
|
1 NULL
|
|
3 NULL
|
|
Warnings:
|
|
Warning 4075 Attempt to read unversioned field `b` in historical query
|
|
select * from t group by a having a=2 for system_time as of timestamp now(6);
|
|
a b
|
|
Warnings:
|
|
Warning 4075 Attempt to read unversioned field `b` in historical query
|
|
select * from t group by b having b=2 for system_time as of timestamp now(6);
|
|
a b
|
|
Warnings:
|
|
Warning 4075 Attempt to read unversioned field `b` in historical query
|
|
select a from t where b=2 for system_time as of timestamp now(6);
|
|
a
|
|
Warnings:
|
|
Warning 4075 Attempt to read unversioned field `b` in historical query
|
|
select a from t where b=NULL for system_time as of timestamp now(6);
|
|
a
|
|
Warnings:
|
|
Warning 4075 Attempt to read unversioned field `b` in historical query
|
|
select count(*), b from t group by b having b=NULL for system_time as of timestamp now(6);
|
|
count(*) b
|
|
Warnings:
|
|
Warning 4075 Attempt to read unversioned field `b` in historical query
|
|
select a, b from t;
|
|
a b
|
|
1 2
|
|
3 4
|
|
drop table t;
|