make tab

optimizer/first_rows/README.md

@@ -4,6 +4,8 @@ It improves the costing of FIRST ROWS type queries so that the optimizer makes b
 
 This is important for applications that return rows (in sorted order) to users that paginate through the result set.
 
+Create the table with make_tab.sql
+
 See scripts before.sql and after.sql - spooled 'lst' output files are provided.
 
 Compare the cost in the before and after versions, and also compare the differences in the resulting plans. The costs in the *after* example (for FETCH FIRST) are much lower and compare favorably with the ROWNUM queries.

optimizer/first_rows/make_tab.sql

@@ -0,0 +1,14 @@
+drop table t purge;
+
+create table t nologging as
+select d.* from dba_objects d,
+( select 1 from dual connect by level <= 10 )
+where object_id is not null;
+
+alter table t noparallel;
+
+alter table t modify object_id not null;
+
+create index ix on t ( object_id ) ;
+
+exec dbms_stats.gather_table_stats(user,'t')