Case-Statement DESC Case-Statement 是 SQL 语句中用于根据不同条件执行不同操作的子句。它可以用于查询、插入、更新等操作中。 语法: 代码语言:txt 复制 CASE WHEN condition1 THEN result1 WHEN condition2 THEN result2 ... ELSE resultN END 其中,condition1、condition2 等表示不同的条件,result1、result2...
What you're ordering by is this column ASC and this is why ID 5 appears second ...
ORDER BY RowNo; #1803497 After reading the article and the comments I was left wondering if the author and many of the commenters had a clear understanding of the difference between a statement, an expression and a clause in SQL whether a lot of the ensuing confusion could have been avoided...
The case statement in SQL returns a value on a specified condition. We can use a Case statement in select queries along with Where, Order By, and Group By clause. It can be used in the Insert statement as well. In this article, we would explore the CASE statement and its various use...
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 , IN, WHERE, ORDER BY, and HAVING.Transact-SQL syntax...
SELECT * FROM table_name ORDER BY CASE expression WHEN condition1 THEN result1, WHEN condition2 THEN result2 ... ELSE resultN END Using CASE with the GROUP BY clause To apply aggregate functions, you can use the CASE statement in conjunction with the GROUP BY clause. ...
CASEcan be used in any statement or clause that allows a valid expression. For example, you can useCASEin statements such as SELECT, UPDATE, DELETE and SET, and in clauses such as, IN, WHERE, ORDER BY, and HAVING. Transact-SQL syntax...
ORDER BY [StaffCount] Because we defined the Staff column in the subquery, we can refer to it in the outer query. This makes re-using code much easier and it makes the SQL statement more compact and easier to maintain. If we would like to change the definition of Staff, we would need...
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. ...
The simple CASE statement only allows you match a value of an expression against a set of distinct values. In order to perform more complex matches such as ranges, you use the searched CASEstatement. The searched CASE statement is equivalent to the IF statement, however, its construct is much...