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Oracle PL/SQL Language Pocket Reference- P23

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Oracle PL/SQL Language Pocket Reference- P23: This pocket guide features quick-reference information to help you use Oracle's PL/SQL language. It includes coverage of PL/SQL features in the newest version of Oracle, Oracle8i. It is a companion to Steven Feuerstein and Bill Pribyl's bestselling Oracle PL/SQL Programming. Updated for Oracle8, that large volume (nearly 1,000 pages) fills a huge gap in the Oracle market, providing developers with a single, comprehensive guide to building applications with PL/SQL and building them the right way. . | FOR EACH ROW DECLARE l_file_name images.file_name TYPE l_directory VARCHAR2 30 BEGIN Determine the directory name DBMS_LOB.FILEGETNAME file_loc NEW.image_file dir_alias l_directory filename l_file_name This will fail with DUP_VAL_ON_INDEX if the images table already contains a record with the new image_id. INSERT INTO images VALUES NEW.image_id l_file_name NEW.file_type NEW.bytes IF NEW.keywords IS NOT NULL THEN DECLARE Note apparent bug prevents use of NEW. keywords.LAST. The workaround is to store NEW.keywords as a local variable in this case keywords_holder. keywords_holder Keyword_tab_t NEW.keywords BEGIN FOR the_keyword IN 1.keywords_holder.LAST LOOP INSERT INTO keywords VALUES NEW.image_id keywords_holder the_keyword END LOOP END END IF END And finally we can demonstrate how an insert would be made using the object view INSERT INTO images_v VALUES Image_t 1002 BFILENAME lWEBPIXl labc.gifl GIF 1024 Keyword_tab_t ALPHABET LETTERS Appendix C Buill-In Packages contains information about these built-in packages. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Previous 20.7 Object Views Housekeeping Oracle PL SQL Programming 2nd Edition Next 21. External Procedures 20.7 Object Views Book Index 21. External Procedures Housekeeping The Oracle Library Navigation Copyright c 2000 O Reilly Associates. All rights reserved. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Chapter 21 Previous 20.8 Postscript Using the BFILE Datatype Next 21.2 Steps in Creating an External Procedure 21. External Procedures Contents Introduction to External Procedures Steps in Creating an External Procedure Syntax for External Procedures Mapping Parameters OCI Service Routines External Procedure Housekeeping Examples I ve lost count of how many times I ve heard the question Can I call whatever from within Oracle Typically whatever is a program that interacts with the external environment sending email polling or controlling hardware or