Difference between revisions of "Conf/Examples/DatabseExampleZeroOrOneRow"
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(Created page with ' part of AOL Database Configuration with PostgreSQL <html> <head><title>Testing of Database connection</title></head> <body> A simple…') |
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<% | <% | ||
set pool "postgres_pool" | set pool "postgres_pool" | ||
| − | set sql "select * from users" | + | set sql "select * from users where user_id = 1" |
set db [ns_db gethandle $pool] | set db [ns_db gethandle $pool] | ||
Revision as of 09:34, 13 January 2012
part of AOL Database Configuration with PostgreSQL
<html> <head><title>Testing of Database connection</title></head> <body> A simple tcl script example of Database Configuration <% set pool "postgres_pool" set sql "select * from users where user_id = 1" set db [ns_db gethandle $pool] set rec [ns_db 0or1row $db $sql] ns_puts [ns_set array $rec] ns_db releasehandle $db %> </body> </html>
Note
This command(ns_db 0or1row) expects the SQL to be a select statement that returns exactly zero or one row. On zero rows, a null string is returned. On one row, a newly allocated ns_set is returned. An error is thrown if more then one row is returned.
