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--
-- TEXT
--
SELECT text 'this is a text string' = text 'this is a text string' AS true;
true
------
t
(1 row)
SELECT text 'this is a text string' = text 'this is a text strin' AS false;
false
-------
f
(1 row)
CREATE TABLE TEXT_TBL (f1 text);
INSERT INTO TEXT_TBL VALUES ('doh!');
INSERT INTO TEXT_TBL VALUES ('hi de ho neighbor');
SELECT '' AS two, * FROM TEXT_TBL;
two | f1
-----+-------------------
| doh!
| hi de ho neighbor
(2 rows)
-- As of 8.3 we have removed most implicit casts to text, so that for example
-- this no longer works:
select length(42);
ERROR: function length(integer) does not exist
LINE 1: select length(42);
^
HINT: No function matches the given name and argument types. You might need to add explicit type casts.
-- But as a special exception for usability's sake, we still allow implicit
-- casting to text in concatenations, so long as the other input is text or
-- an unknown literal. So these work:
select 'four: '::text || 2+2;
?column?
----------
four: 4
(1 row)
select 'four: ' || 2+2;
?column?
----------
four: 4
(1 row)
-- but not this:
select 3 || 4.0;
ERROR: operator does not exist: integer || numeric
LINE 1: select 3 || 4.0;
^
HINT: No operator matches the given name and argument type(s). You might need to add explicit type casts.
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