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Special Forums UNIX and Linux Applications Alternative for slow SQL subquery Post 302358985 by jim mcnamara on Monday 5th of October 2009 11:36:37 AM
Old 10-05-2009
Did you run tkprof? ( alter session set sql_trace trueSmilie then run tkprof on the dump?
if the subselect returns thousands of hits from the db, or PT.specl_comp_cd is not indexed and the table contains millions of rows then you have a problem. Is employee id indexed in the payroll_tbl?
 

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MSSQL_QUERY(3)															    MSSQL_QUERY(3)

mssql_query - Send MS SQL query

SYNOPSIS
mixed mssql_query (string $query, [resource $link_identifier], [int $batch_size]) DESCRIPTION
mssql_query(3) sends a query to the currently active database on the server that's associated with the specified link identifier. PARAMETERS
o $query - An SQL query. o $link_identifier - A MS SQL link identifier, returned by mssql_connect(3) or mssql_pconnect(3). If the link identifier isn't specified, the last opened link is assumed. If no link is open, the function tries to establish a link as if mssql_connect(3) was called, and use it. o $batch_size - The number of records to batch in the buffer. RETURN VALUES
Returns a MS SQL result resource on success, TRUE if no rows were returned, or FALSE on error. EXAMPLES
Example #1 mssql_query(3) example <?php // Connect to MSSQL $link = mssql_connect('KALLESPCSQLEXPRESS', 'sa', 'phpfi'); if (!$link || !mssql_select_db('php', $link)) { die('Unable to connect or select database!'); } // Do a simple query, select the version of // MSSQL and print it. $version = mssql_query('SELECT @@VERSION'); $row = mssql_fetch_array($version); echo $row[0]; // Clean up mssql_free_result($version); ?> NOTES
Note If the query returns multiple results then it is necessary to fetch all results by mssql_next_result(3) or free the results by mssql_free_result(3) before executing next query. SEE ALSO
mssql_select_db(3), mssql_connect(3). PHP Documentation Group MSSQL_QUERY(3)
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