Обсуждение: Sorry to nag, but... [Failures with arrays]
Is anyone interested in this problem? (At least add it to the TODO list!)
This was reported as a bug with the Debian package of 6.3.2; the same
behaviour is still present in 6.4.
bray=> create table foo ( t text[]);
CREATE
bray=> insert into foo values ( '{"a"}');
INSERT 201354 1
bray=> insert into foo values ( '{"a","b"}');
INSERT 201355 1
bray=> insert into foo values ( '{"a","b","c"}');
INSERT 201356 1
bray=> select * from foo;
t
-------------
{"a"}
{"a","b"}
{"a","b","c"}
(3 rows)
bray=> select t[1] from foo;
ERROR: type name lookup of t failed
bray=> select * from foo;
t
-------------
{"a"}
{"a","b"}
{"a","b","c"}
(3 rows)
bray=> select foo.t[1] from foo;
t
-
a
a
a
(3 rows)
bray=> select count(foo.t[1]) from foo;
pqReadData() -- backend closed the channel unexpectedly.
--
Oliver Elphick Oliver.Elphick@lfix.co.uk
Isle of Wight http://www.lfix.co.uk/oliver PGP key from public servers; key
ID32B8FAA1 ======================================== "Go ye therefore, and teach all nations,
baptizingthem in the name of the Father, and of the Son, and of the Holy Ghost; Teaching them to observe all
things whatsoever I have commanded you; and, lo, I am with you alway, even unto the end of the world. Amen."
Matthew 28:19,20
> Is anyone interested in this problem? (At least add it to the TODO list!)
>
> This was reported as a bug with the Debian package of 6.3.2; the same
> behaviour is still present in 6.4.
>
> bray=> create table foo ( t text[]);
> CREATE
> bray=> insert into foo values ( '{"a"}');
> INSERT 201354 1
> bray=> insert into foo values ( '{"a","b"}');
> INSERT 201355 1
> bray=> insert into foo values ( '{"a","b","c"}');
> INSERT 201356 1
> bray=> select * from foo;
> t
> -------------
> {"a"}
> {"a","b"}
> {"a","b","c"}
> (3 rows)
>
> bray=> select t[1] from foo;
> ERROR: type name lookup of t failed
> bray=> select * from foo;
> t
> -------------
> {"a"}
> {"a","b"}
> {"a","b","c"}
> (3 rows)
>
> bray=> select foo.t[1] from foo;
> t
> -
> a
> a
> a
> (3 rows)
>
> bray=> select count(foo.t[1]) from foo;
> pqReadData() -- backend closed the channel unexpectedly.
>
I have added:
* array index references without table name cause problems* aggregates on array indexes crash backend
-- Bruce Momjian | http://www.op.net/~candle maillist@candle.pha.pa.us | (610)
853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill,
Pennsylvania19026
Added to TODO.
> Is anyone interested in this problem? (At least add it to the TODO list!)
>
> This was reported as a bug with the Debian package of 6.3.2; the same
> behaviour is still present in 6.4.
>
> bray=> create table foo ( t text[]);
> CREATE
> bray=> insert into foo values ( '{"a"}');
> INSERT 201354 1
> bray=> insert into foo values ( '{"a","b"}');
> INSERT 201355 1
> bray=> insert into foo values ( '{"a","b","c"}');
> INSERT 201356 1
> bray=> select * from foo;
> t
> -------------
> {"a"}
> {"a","b"}
> {"a","b","c"}
> (3 rows)
>
> bray=> select t[1] from foo;
> ERROR: type name lookup of t failed
> bray=> select * from foo;
> t
> -------------
> {"a"}
> {"a","b"}
> {"a","b","c"}
> (3 rows)
>
> bray=> select foo.t[1] from foo;
> t
> -
> a
> a
> a
> (3 rows)
>
> bray=> select count(foo.t[1]) from foo;
> pqReadData() -- backend closed the channel unexpectedly.
>
> --
> Oliver Elphick Oliver.Elphick@lfix.co.uk
> Isle of Wight http://www.lfix.co.uk/oliver
> PGP key from public servers; key ID 32B8FAA1
> ========================================
> "Go ye therefore, and teach all nations, baptizing them
> in the name of the Father, and of the Son, and of the
> Holy Ghost; Teaching them to observe all things
> whatsoever I have commanded you; and, lo, I am with
> you alway, even unto the end of the world. Amen."
> Matthew 28:19,20
>
>
>
>
-- Bruce Momjian | http://www.op.net/~candle maillist@candle.pha.pa.us | (610)
853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill,
Pennsylvania19026