![]() ![]() A CASE expression can only have 1 ELSE clause. If a CASE expression has no ELSE clause, and none of the WHEN clauses are true, the statement returns NULL. This is returned if none of the WHEN clauses are true. ![]() How do we reload grid data by code / macro I need to refresh the underlying data for a particular grid (probably in a container application) without reloading the whole page. The optional ELSE clause specifies a default result. Hi, I believe this is a common need for AJAX web applications, but I couldn’t find anything in scriptcase site. NotesĪll of the possible results in a THEN clause must be of the same type.įor example, if the first THEN clause returns Text, additional THEN clauses, as well as the ELSE clause must also return Text. If there are multiple WHEN conditions, the CASE expression returns the result for the first true condition. THEN resultĮach WHEN condition must have a matching THEN clause, which specifies the results if that condition is true. Hello, I have a form, there are 2 select fields on it, lookup method automatic on both fields. Using the events you can program custom actions at a specific execution time (e.g. You can use any valid Boolean expression as the WHEN conditions. Scriptcase uses the events to enable the developer to customize the application code. WHEN conditions evaluate your data and return true if the specified condition is met, or false if it isn't. If all WHEN conditions are false or NULL, CASE returns the ELSE result, or if no ELSE clause is present, returns NULL. Any remaining WHEN clauses and the ELSE result are not evaluated. Example: After deleting the record we can. ![]() The form will then execute the events onValidate, onValidateSuccess and onBeforeDelete, and then, right after executing the SQL command to delete the record in the database, it will execute the event onAfterDelete. If none of the WHEN clause conditions are true, CASE returns the value in the ELSE clause, or NULL if no ELSE clause is specified.ĬASE evaluates each successive WHEN clause and returns the first result where the condition is true. This event occurs after clicking the forms Delete button. You must have one THEN clause for each WHEN clause in your CASE expression. THEN: the result to return if the WHEN clause's condition is true.You can have multiple WHEN clauses in a single CASE expression. WHEN: a condition you want to evaluate.In between, you'll have a number sections or "clauses": WHEN Country IN ("England","France" ) THEN "Europe"Ī CASE expression begins with the CASE keyword and ends with the END keyword. WHEN Country IN ("USA","Canada","Mexico" ) THEN "North America" ![]()
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