Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Not a Bug
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10.3, 10.4, 10.5, 10.6, 10.7, 10.8, 10.9
Description
According standard "If a <view column list> is" not "specified ... the <column name>s of the view are the <column name>s of the table specified by the <query expression>"
In simple select is everything good:
select null, null, null; |
NULL NULL NULL |
NULL NULL NULL |
But if column name is NULL and there are more than one such column name in select for creating view, than columns have names like "My_exp_NULL", "My_exp_1_NULL" and etc.
Test:
create view v1 as select null, null, null; |
select * from v1; |
drop view v1; |
Actual result:
create view v1 as select null, null, null; |
select * from v1; |
NULL My_exp_NULL My_exp_1_NULL |
NULL NULL NULL |
drop view v1; |
Expected result:
create view v1 as select null, null, null; |
select * from v1; |
NULL NULL NULL |
NULL NULL NULL |
drop view v1; |
=============================================================================================================================
The same problem is with aggregate functions:
Test 2:
CREATE TABLE t1 (a int(11)); |
INSERT INTO t1 VALUES (1),(2); |
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select a, SUM(a), SUM(a)+1, SUM(a) from t1; |
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create view v1 as select a, SUM(a), SUM(a)+1, SUM(a) from t1; |
select * from v1; |
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drop view v1; |
drop tables t1; |
Actual result 2:
select a, SUM(a), SUM(a)+1, SUM(a) from t1; |
a SUM(a) SUM(a)+1 SUM(a) |
1 3 4 3
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create view v1 as select a, SUM(a), SUM(a)+1, SUM(a) from t1; |
select * from v1; |
a SUM(a) SUM(a)+1 My_exp_SUM(a) |
1 3 4 3
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Attachments
Issue Links
- is part of
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MDEV-27691
make working view-protocol
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- Open
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