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Posted By

thecrumb on 01/23/08


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sql Oracle


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Generate the SQL necessary to create triggers (Oracle)

Published in: SQL 

Generate the SQL necessary to create triggers that use the sequences listed above. NOTE: This particular script assumes that the tables all start with ‘tbl’.
It may need to be modified to work with different naming conventions.

Plain TextExpand 
  1. SELECT 'CREATE OR REPLACE TRIGGER trg' || substr (table_name,4,length(table_name)-3) || '
  2. before insert on tbl' || substr (table_name,4,length(table_name)-3) || '
  3. for each row
  4. declare
  5. 	begin
  6. 		 if (:new.' || substr (table_name,4,length(table_name)-3) || 'id =0) or (:new.' || substr (table_name,4,length(table_name)-3) || 'id is null) then
  7. 		 begin
  8. 			select tbl' || substr (table_name,4,length(table_name)-3) || '_seq.nextval
  9. 			into
  10. 			:new.' || substr (table_name,4,length(table_name)-3) || 'id from dual;
  11. 		end;
  12. 		end if;
  13. 	end;
  14. / '
  15. FROM user_tables

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