PostgresSQL 7.1.3 not parsing SELECT portion of SQL correctly
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POSTGRESQL BUG REPORT TEMPLATE
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Your name : Mark Jeacocke
Your email address : mbj@ezytools.com
System Configuration
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Architecture (example: Intel Pentium) : AMD Athlon XP 1600
Operating System (example: Linux 2.0.26 ELF) : RedHat Linux 7.0 Kernel
2.4.2
PostgreSQL version (example: PostgreSQL-7.1.3): PostgreSQL-7.1.3
Compiler used (example: gcc 2.95.2) : Downloaded offical RPMS from
Postgres mirror
Please enter a FULL description of your problem:
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Seems to be a parsing problem in the select portion of the SQL statement:
select DISTINCT TABLEID, '' AS ALIAS from TABLE; :FAILS
select DISTINCT TABLEID, 'test' AS ALIAS from TABLE; :FAILS
select DISTINCT TABLEID, Null AS ALIAS from TABLE; :FAILS
select DISTINCT TABLEID, trim('') AS ALIAS from TABLE; :SUCCEEDS
select DISTINCT TABLEID, 2 AS ALIAS from TABLE; :SUCCEEDS
I believe all five queries should succeed.
Please describe a way to repeat the problem. Please try to provide a
concise reproducible example, if at all possible:
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See above.
If you know how this problem might be fixed, list the solution below:
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"Mark Jeacocke" <mbj@ezytools.com> writes:
select DISTINCT TABLEID, '' AS ALIAS from TABLE; :FAILS
We get this type of complaint regularly. Perhaps DISTINCT should
resolve unknown-type inputs to "text", much as we do with CASE
and UNION constructs when we see an untyped literal. Thoughts?
regards, tom lane
PS: in the meantime, Mark, try casting the literal to text.
Is this a TODO item? Seems so. Comments?
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Tom Lane wrote:
"Mark Jeacocke" <mbj@ezytools.com> writes:
select DISTINCT TABLEID, '' AS ALIAS from TABLE; :FAILS
We get this type of complaint regularly. Perhaps DISTINCT should
resolve unknown-type inputs to "text", much as we do with CASE
and UNION constructs when we see an untyped literal. Thoughts?regards, tom lane
PS: in the meantime, Mark, try casting the literal to text.
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