{"id":361,"date":"2010-09-17T20:20:37","date_gmt":"2010-09-18T01:20:37","guid":{"rendered":"http:\/\/anvil-of-time.com\/wordpress\/?p=361"},"modified":"2021-03-09T10:12:45","modified_gmt":"2021-03-09T15:12:45","slug":"powerbuilder-gotcha-datawindow-update-properties","status":"publish","type":"post","link":"https:\/\/anvil-of-time.com\/powerbuilder\/powerbuilder-gotcha-datawindow-update-properties\/","title":{"rendered":"PowerBuilder ‘Gotcha’ – Datawindow update properties"},"content":{"rendered":"

So a customer is complaining that their data is ‘auto-magically’ changing and there is ‘no way anyone here is doing it since I’m the only one who knows how’. Blah, blah, blah.<\/p>\n

Solution? – database trigger to log when something is changed on the specified table.<\/p>\n

Now you go to the datawindow object which handles the particular item in question and you look at the update properties and you see something like this:<\/p>\n

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Notice the Key Modification group box has ‘Use Delete then Insert’ as the option. Now you think that this means that Powerbuilder is going to issue a delete and then an insert statement whenever the table is modified so you go off and write a delete trigger to watch for changes in code or description. Here’s the rub. The ‘Unique Key Column(s) values determine when the delete\/insert is performed. In the example, a change to the taskcode would not trigger a delete; it triggers an update. Make your trigger fire on an update and delete if you want to track such things.<\/p>\n

Good luck with your customer…<\/p>\n","protected":false},"excerpt":{"rendered":"

So a customer is complaining that their data is ‘auto-magically’ changing and there is ‘no way anyone here is doing it since I’m the only one who knows how’. Blah, blah, blah. Solution? – database trigger to log when something is changed on the specified table. Now you go to the datawindow object which handles…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[21,12],"_links":{"self":[{"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/posts\/361"}],"collection":[{"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/comments?post=361"}],"version-history":[{"count":11,"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/posts\/361\/revisions"}],"predecessor-version":[{"id":1824,"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/posts\/361\/revisions\/1824"}],"wp:attachment":[{"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/media?parent=361"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/categories?post=361"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/anvil-of-time.com\/wp-json\/wp\/v2\/tags?post=361"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}