Pass in variable from user???

am 13.05.2006, um 14:15:52 -0700 mailte syohonn@gmail.com folgendes:

Using PL/PGSQL, I am trying to create a procedure to display the count
of rows in any single table of a database. The End-user would pass in a
table name and the prodecure would display the table name with the row
count.
I am able to hardcode the variable for table and get the appropriate
results from my count function (see below), but cannot pass in a
variable and have the function work. Any suggesstions???

CREATE FUNCTION get_table_count(tablename text) RETURNS integer AS $$
DECLARE

--tablename ALIAS FOR $1;

rowcount INTEGER;
BEGIN

SELECT INTO rowcount count(*) FROM tablename;

You can't do SL direct with such parameters, but you can use
EXECUTE. Please read:

http://www.postgresql.org/docs/8.1/interactive/plpgsql-statements.html#PLPGSQL-STATEMENTS-EXECUTING-DYN

HTH, Andreas
--
Andreas Kretschmer (Kontakt: siehe Header)
Heynitz: 035242/47215, D1: 0160/7141639
GnuPG-ID 0x3FFF606C http://wwwkeys.de.pgp.net
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Use 'EXECUTE' to dynamically build SQL:

http://www.postgresql.org/docs/8.1/interactive/plpgsql-statements.html#PLPGSQL-STATEMENTS-EXECUTING-DYN
<http://www.postgresql.org/docs/8.1/interactive/plpgsql-statements.html#PLPGSQL-STATEMENTS-EXECUTING-DYN&gt;
-Mike