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help / color / mirror / Atom feedFrom: dfgpostgres <[email protected]>
To: [email protected]
Subject: PG Unpivot ?
Date: Mon, 3 Nov 2025 12:18:55 -0500
Message-ID: <CAAcmDX_KU4A1DWzKmO4XacVQ72+0KZ9rZSvQwHkCWgpqB-Lb2w@mail.gmail.com> (raw)
psql (13.2, server 15.3) on linux
I think they call this "unpivot" in MSSQL ?
How can I get an sql query to return one line per column with... an ID,
column name and value. the ctid for the id field is fine.
Example:
dvdb=# create table unpivot (intcol integer, floatcol float, strcol
varchar);
CREATE TABLE
dvdb=# insert into unpivot (intcol,floatcol,strcol) values
(1,1.1,'one'),(2,2.2,'two'),(3,3.3,'three');
INSERT 0 3
dvdb=# select * from unpivot;
intcol | floatcol | strcol
--------+----------+--------
1 | 1.1 | one
2 | 2.2 | two
3 | 3.3 | three
(3 rows)
I want 9 records returned, each row with 3 cols, 1st col is the ctid,
second is the column name, third is the val.
Thanks in Advance !
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