mirror of
https://github.com/MariaDB/server.git
synced 2025-08-21 16:03:24 +03:00
127 lines
4.0 KiB
Plaintext
127 lines
4.0 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 4109 Attempt to read unversioned field `b` in historical query
|
|
Warning 4109 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 4109 Attempt to read unversioned field `b` in historical query
|
|
select count(*) from t group by b system_time as of timestamp now(6);
|
|
count(*)
|
|
2
|
|
Warnings:
|
|
Warning 4109 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 4109 Attempt to read unversioned field `b` in historical query
|
|
Warning 4109 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 4109 Attempt to read unversioned field `b` in historical query
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
select * from t group by a having a=2 system_time as of timestamp now(6);
|
|
a b
|
|
Warnings:
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
select * from t group by b having b=2 system_time as of timestamp now(6);
|
|
a b
|
|
Warnings:
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
select a from t where b=2 system_time as of timestamp now(6);
|
|
a
|
|
Warnings:
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
select a from t where b=NULL system_time as of timestamp now(6);
|
|
a
|
|
Warnings:
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
select a from t where b is NULL system_time as of timestamp now(6);
|
|
a
|
|
1
|
|
3
|
|
Warnings:
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
select count(*), b from t group by b having b=NULL system_time as of timestamp now(6);
|
|
count(*) b
|
|
Warnings:
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
select a, b from t;
|
|
a b
|
|
1 2
|
|
3 4
|
|
select count(*) from t for system_time as of timestamp now(6) group by b;
|
|
count(*)
|
|
2
|
|
Warnings:
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
select * from t for system_time as of timestamp now(6) group by b having b=2;
|
|
a b
|
|
Warnings:
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
select a from t for system_time as of timestamp now(6) where b=2;
|
|
a
|
|
Warnings:
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
select a from t for system_time as of timestamp now(6) where b=NULL;
|
|
a
|
|
Warnings:
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
select a from t for system_time as of timestamp now(6) where b is NULL;
|
|
a
|
|
1
|
|
3
|
|
Warnings:
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
select count(*), b from t for system_time as of timestamp now(6) group by b having b=NULL;
|
|
count(*) b
|
|
Warnings:
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
create or replace table t (
|
|
a int,
|
|
b int not null without system versioning
|
|
) with system versioning;
|
|
insert into t values (1, 2), (3, 4);
|
|
select * from t for system_time as of timestamp now(6);
|
|
a b
|
|
1 NULL
|
|
3 NULL
|
|
Warnings:
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
select * from t for system_time as of timestamp now(6) where b is NULL;
|
|
a b
|
|
1 NULL
|
|
3 NULL
|
|
Warnings:
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
Warning 4109 Attempt to read unversioned field `b` in historical query
|
|
drop table t;
|