using the CASE statement in the WHERE clause is perfectly legal. However, I have tried the following code, which is basically a cut & paste version of what I found described, but SQL Server keeps generating errors at the first WHEN clause. I would appreciate anyone's guidance g...
在我的SELECT语句中,有一个CASE WHEN THEN ELSE END AS语句,我无法在WHERE子句中进行过滤。我不明白为什么会出现这种问题,请问有人能解释一下吗? SELECT CASE WHEN m.Country IN ('CANADA', 'UNITED STATES', 'USA', 'MEXICO') THEN 'NA' WHEN m.Country IN ('BRAZIL') THEN 'JD2' WHEN m.Country ...
CASE can be used in any statement or clause that allows a valid expression. For example, you can use CASE in statements such as SELECT, UPDATE, DELETE and SET, and in clauses such as select_list, IN, WHERE, ORDER BY, and HAVING. --Syntax for SQL Server and Azure SQL DatabaseSimple...
OR ） CASE WHEN sex = ‘1’ THEN ‘男’ WHEN sex = ‘2’ THEN ‘女’ ELSE ‘其他’ END...
2) Case:a) If the value of the <search condition> of some <searched when clause> in a <...
asked Jul 9, 2019 in SQL by Tech4ever (20.3k points) The OR in the WHEN clause of a CASE statement is not supported. How can I do this? CASE ebv.db_no WHEN 22978 OR 23218 OR 23219 THEN 'WECS 9500' ELSE 'WECS 9520' END as wecs_system sql sql-server tsql case case...
case when in sql server's stored procedure https://docs.microsoft.com/en-us/sql/t-sql/language-elements/case-transact-sql Evaluates a list of conditions and returns one of multiple possible result expressions. The CASE expression hastwo formats:...
'VARCHAR' is not a recognized built-in function name. 'WHEN MATCHED' cannot appear more than once in a 'UPDATE' clause of a MERGE statement. "EXECUTE AT" with Dynamic Linked Server Name "explicit value must be specified for identity column in table" error in SQL 2000 "FROM clause have ...
Side note:Be aware that the above approach may lead to performance issues. The SQL Server query ...
生产系统上按照业务处理逻辑编写的SQL语句核心代码如下: SELECT (CASE WHEN c.in_force_dateISNOTNULL THEN (CASE WHEN a.mio_date>=c.in_force_dateTHENa.mio_date ELSE c.in_force_date END ) WHEN c.in_force_dateISNULLTHEN (CASE WHEN a.mio_date>=a.plnmio_dateTHENa.mio_date ...