If case_value does not any values, then the statement of else block will be executed.This process of comparing case_value with value will continue until case_value matches equality value with value_2, value_3, value_4……value_n If case_value is not equal to Value_1, then case_value will match with value_2 for equality.If case_value is equal to Value_1, then next WHEN…THEN statements will be skipped, and CASE execution will be stopped immediately.The case_value matches the first value then next below values in proper order. ![]() Simple Case syntax checks only the equality of case_value with value_1 to value_n.So, you should use simple case syntax if you want to get the result based upon different values. You have to use one of the following syntaxes to execute the SQL statement with CASE. ![]() Note – If the ELSE block does not exist and all the conditions are false, it will return a NULL value. If all the conditions are false, It will return the result of the ELSE block. Once a condition is true, It will stop reading the next statement and return the result. It contains WHEN, THEN & ELSE statements to execute the different results with different comparison operators like =, >, >=, <, <= so on.Ĭase executes through the conditions and returns a result when the condition is true. SQL CASE Statement in different ClausesĬase statement controls the different sets of a statement based upon different conditions.SQL CASE Statement with other Statements.So, continue reading this tutorial without skipping any one of the given steps. You will get more information about case statements like their syntax, comparison operator, example, usage & how to execute. The case statement also has a similar capability to perform different actions based upon different conditions. In the above example, we have seen that different actions are performed in different conditions. between 29% to 45% then he gets the third division. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |