Small correction to last cleanups.

[fa-stable.git] / includes / db / sql_functions.inc

diff --git a/includes/db/sql_functions.inc b/includes/db/sql_functions.inc
index febc3af824e4f1246be0f9659a7a6aced26616ab..aead5d376e8c2f415925324f39dae6848dee46ce 100644 (file)
--- a/includes/db/sql_functions.inc
+++ b/includes/db/sql_functions.inc
@@ -59,4 +59,21 @@ function update_record_status($id, $status, $table, $key) {
                
        db_query($sql, "Can't update record status");
 }
-?>
+//-----------------------------------------------------------------------------
+//
+//     Helper for sql subquery returning running totals from delta tables like stock_moves or bank_trans
+//
+//     $table - table name with optional WHERE clause
+//  $column - delta column
+//     $index  - comma delimited list of columns for total grouping and order
+//  Returns running totals with respective index column
+//
+function running_total_sql($table, $column, $index)
+{
+
+       return "SELECT daily.$index, daily.$column, (@total:=@total+daily.$column) total 
+               FROM
+                       (SELECT $index, sum($column) $column FROM $table GROUP BY $index ORDER BY $index) daily,
+                       (SELECT @total:=0) total_var";
+}
+