Failures with arrays

New TODO list item:

* select t[1] from foo fails, select count(foo.t[1]) from foo crashes

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
========================================
"Let us therefore come boldly unto the throne of grace,
that we may obtain mercy, and find grace to help in
time of need." Hebrews 4:16

-- 
  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, Pennsylvania 19026

I can confirm that this is fixed in 7.0, I believe by Tom Lane.

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
========================================
"Let us therefore come boldly unto the throne of grace,
that we may obtain mercy, and find grace to help in
time of need." Hebrews 4:16

-- 
  Bruce Momjian                        |  http://www.op.net/~candle
  pgman@candle.pha.pa.us               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026