http://www.database-brothers.com/blog/AlexanderKopac.php Alexander Kopac en http://backend.userland.com/rss092 Tue, 15 Jan 2008 12:06:00 +0000 webmaster@database-brothers.com webmaster@database-brothers.com http://www.database-brothers.com/blog/AlexanderKopac.php?id=75 Mon, 07 Jan 2008 13:24:51 +0000 General http://www.database-brothers.com/blog/AlexanderKopac.php?id=75#cmt For example, I picked two EXPLAIN tables - SYSIBM.EXPLAIN_INSTANCE & SYSIBM.EXPLAIN_DIAGNOSTIC tables. BTW, here's some notes for the following SQL Catalog query: ADK.CHILDREN table is a CTE (Common Table Expression) i.e. a Temporary Table that is generated/created on the fly just for the duration of this query. ======================================================= ..]]> http://www.database-brothers.com/blog/AlexanderKopac.php?id=72 Thu, 15 Nov 2007 17:17:13 +0000 General http://www.database-brothers.com/blog/AlexanderKopac.php?id=72#cmt http://www.database-brothers.com/blog/AlexanderKopac.php?id=70 Tue, 30 Oct 2007 13:27:42 +0000 General http://www.database-brothers.com/blog/AlexanderKopac.php?id=70#cmt Well, what follows is perhaps some Jumbalaya magic - Jumbling/Obsfucating Production Data for Testing Purposes ! As many of you know, there are many application vendors of database "Data Quality & Cleansing tools" that prepare/check for valid addresses for USPS handling by verifying, standardizing, and correcting address elements, as well as producing delivery point barcodes in order to enable pre-sorting for postal automation discounts. Many times, the technique that I am providing below can be used to help get thru these 'testing stangleholds' or bottlenecks and mask the real data owners. Of course, ya'll must try this all out with sqlplus scott/tiger @jumbalaya.sql > jumbalaya.txt /NOLOG The sample below (jumbalaya.sql) takes the address from the next-row after the row read (in-hand) and substitutes/updates/puts it into the current row thereby "cornfusing; murdalating and obsfucat'n" the darn data. The point here is that the address is/remai ..]]> http://www.database-brothers.com/blog/AlexanderKopac.php?id=69 Thu, 18 Oct 2007 15:35:01 +0000 General http://www.database-brothers.com/blog/AlexanderKopac.php?id=69#cmt