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for now, remove FOR SYSTEM_TIME at the end of the query

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non-standard, redundant, potentially risky in the future,
hides bugs. See #383, #384, #385

Fixed a parser bug where
SELECT * FROM (t1 join t2) FOR SYSTEM_TIME ...
was not an error.
This commit is contained in:
Sergei Golubchik
2017-12-11 14:09:58 +01:00
parent a1141e226d
commit ca6454bcfe
13 changed files with 124 additions and 156 deletions
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20
mysql-test/suite/versioning/r/derived.result
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@ -91,34 +91,29 @@ ancestors
as
(
select e.emp_id, e.name, e.mgr
from emp as e
from emp for system_time as of timestamp @ts as e
where name = 'bill'
for system_time as of timestamp @ts
union
union
select ee.emp_id, ee.name, ee.mgr
from emp as ee, ancestors as a
from emp for system_time as of timestamp @ts as ee, ancestors as a
where ee.mgr = a.emp_id
for system_time as of timestamp @ts
)
select * from ancestors;
emp_id name mgr
1 bill 0
2 bill 1
3 kate 1
set @tmp= "
with recursive
ancestors
as
(
select e.emp_id, e.name, e.mgr
from emp as e
from emp for system_time as of timestamp @ts as e
where name = 'bill'
for system_time as of timestamp @ts
union
select ee.emp_id, ee.name, ee.mgr
from emp as ee, ancestors as a
from emp for system_time as of timestamp @ts as ee, ancestors as a
where ee.mgr = a.emp_id
for system_time as of timestamp @ts
)
select * from ancestors";
prepare stmt from @tmp;
@ -126,7 +121,6 @@ execute stmt;
emp_id name mgr
1 bill 0
2 bill 1
3 kate 1
drop prepare stmt;
drop table emp;
create or replace table t1 (x int) with system versioning;
@ -155,7 +149,7 @@ with s3 as (select *, t1.sys_trx_end from t2, t1 for system_time as of timestamp
y x
10 1
# SYSTEM_TIME propagation from outer to inner
select * from (select *, t1.sys_trx_start from t2 for system_time as of current_timestamp, t1) as s4 for system_time as of timestamp @t0;
select * from (select *, t1.sys_trx_start from t2 for system_time as of current_timestamp, t1) for system_time as of timestamp @t0 as s4;
y x
10 1
with s5 as (select *, t1.sys_trx_start from t2 for system_time as of current_timestamp, t1) select * from s5 for system_time as of timestamp @t0;
@ -183,7 +177,7 @@ select * from (select *, vt1.sys_trx_end from t2, vt1) as s0;
y x
10 1
### SYSTEM_TIME clash
select * from (select * from t1 for system_time all) dt0 for system_time all;
select * from (select * from t1 for system_time all) for system_time all as dt0;
ERROR HY000: SYSTEM_TIME is not allowed outside historical `dt0`
select * from vt1 for system_time all;
ERROR HY000: SYSTEM_TIME is not allowed outside historical `vt1`