Fix slightly misleading description of PERFORM syntax.

diff --git a/doc/src/sgml/plpgsql.sgml b/doc/src/sgml/plpgsql.sgml
index ff2b4b2a74958f285d106c481b2d2a29fcd60472..3e87f76f5b3b1f668147ddf9595057ebca17aebe 100644 (file)
--- a/doc/src/sgml/plpgsql.sgml
+++ b/doc/src/sgml/plpgsql.sgml
@@ -1,5 +1,5 @@
 
 
  
@@ -1073,10 +1073,12 @@ END;
 PERFORM query;
 
 
-     This executes query, which must be a
-     SELECT statement, and discards the
-     result. PL/pgSQL variables are
-     substituted in the query as usual.  Also, the special variable
+     This executes query and discards the
+     result.  Write the query the same
+     way as you would in an SQL SELECT command, but replace the
+     initial keyword SELECT with PERFORM.
+     PL/pgSQL variables will be
+     substituted into the query as usual.  Also, the special variable
      FOUND is set to true if the query produced at
      least one row or false if it produced no rows.