Initial commit

Lts/Tests/DatabaseInitialisation/proc_exists_constraint.sql

@@ -0,0 +1,30 @@
+-- # $Id$
+-- # $HeadURL$
+-- # $Author$
+
+CREATE OR REPLACE FUNCTION exists_constraint(constraintName text, dbSchema text, constraintType char) RETURNS bool AS
+$$
+DECLARE
+  exist_constraint "bool";
+
+BEGIN
+
+   EXECUTE 'SELECT COUNT(*)
+            FROM   pg_class     c
+            JOIN   pg_namespace n ON n.oid = c.relnamespace
+            WHERE  c.relname = $1
+            AND    n.nspname = $2
+            AND    c.relkind = $3'
+   INTO exist_constraint
+   USING constraintName, dbSchema, constraintType; 
+
+   IF exist_constraint THEN
+      RETURN TRUE;
+   ELSE                    
+      RETURN FALSE;
+   END IF;
+
+END;
+$$
+LANGUAGE plpgsql;
+