Summary: in this tutorial, you will learn how to use MySQL CASE statements to construct complex conditional statements inside stored programs. Besides the IF statement, MySQL provides an alternative conditional statement called the CASEstatement. The CASE statement makes the code more readable and ...
The CASE statement cannot have an ELSE NULL clause, and it is terminated with END CASE instead of END. For the first syntax, case_value is an expression. This value is compared to the when_value expression in each WHEN clause until one of them is equal. When an equal when_value is ...
The CASE statement cannot have an ELSE NULL clause, and it is terminated with END CASE instead of END. For the first syntax, case_value is an expression. This value is compared to the when_value expression in each WHEN clause until one of them is equal. When an equal when_value is ...
rw.afstand1 and rw.afstand2 are of type SMALLINT UNSIGNED. Executing this on a test-db, this gave me warnings (1264 - Out of range value for ...). So something went wrong in the CASE. I've reset the table to original values, and ran the following select: SELECT rw.afstand1 , (...
Examples 1. Basic Case Usage SELECTproduct_name,CASEWHENstock_quantity>0THEN'In Stock'ELSE'Out of Stock'ENDASstock_statusFROMproducts; This example evaluates the `stock_quantity` and returns 'In Stock' if the quantity is greater than zero, otherwise 'Out of Stock'. ...
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In each case, the rows are sorted by the ORDER BY column, which is all that is required by the SQL standard. If it is important to ensure the same row order with and without LIMIT, include additional columns in the ORDER BY clause to make the order deterministic. For example, if id ...
shardingsphere version:4.1.1 mybatis sql as follow: SELECT id, (CASE WHEN LENGTH(TRIM(name_en))]]>0 THEN CONCAT(name_cn,'-',name_en) ELSE name_cn END) AS text,account_no FROM user WHERE status=1 xxxx debug screenshot exception: line 3:25...
Description: When using a subquery with a case when in the update statement, the updated data does not match the expected results returned by the subquery. How to repeat: 1、prepare data: drop database if exists select_test; create database if not exists select_test; create table if not ...
case statement helpPosted by: donw Date: July 27, 2007 01:09PM Hi All, Is there a place where one can get some examples of case structure usage within a stored function ? I've checked a bunch of places and examples appear to be really lacking. In my function (var1 passed in ...