The searched CASE statement evaluates multiple Boolean expressions and executes the sequence of statements associated with the first condition that evaluates to TRUE. The searched CASE statement has the followin
With the searched CASE expression, we can have multiple WHEN conditions: SELECT [BusinessEntityID],[JobTitle],[HireDate],Seniority=CASE WHENDATEDIFF(YEAR,[HireDate],GETDATE())>10 THEN'Longer than 10 years'WHENDATEDIFF(YEAR,[HireDate],GETDATE())=10 THEN'Exactly 10 years'WHENDATEDIFF(YEAR,[...
不然会导致转换无效. SELECT id, case WHEN cast(`status` AS SIGNED) < 45 THEN '1' WHEN cast(...
避免分母为0,或者使用CASE WHEN语法绕过。 创建MySQL兼容性插件,开启允许除以0的开关,详情请参见迁移MySQL至Hologres。 ERRCODE_STRING_DATA_RIGHT_TRUNCATION 报错:value too long for type character varying(xxx) 问题原因:字段长度超过了VARCHAR类型的长度限制。
select sal, case when sal < 2000 then 'category 1' when sal < 3000 then 'category 2' when sal < 4000 then 'category 3' else 'category 4' end from emp; E.g.: The requirement is to find out the count of employees for various conditions as given below. There are multiple ways of...
Adding multiple conditions to a CASE statement You can also define a number of outcomes in aCASEstatement by including as manyWHEN/THENstatements as you'd like: SELECT player_name, weight, CASE WHEN weight > 250 THEN 'over 250' WHEN weight > 200 THEN '201-250' WHEN weight > 175 THEN ...
Different Formats of CASE Statements A simple CASE statement expression In this format, we evaluate one expression against multiple values. In a simple case statement, it evaluates conditions one by one. Once the condition and expression are matched, it returns the expression mentioned in THEN cla...
In this case, the documents that contain Bluetooth are assigned high ranks. Advanced queries Specify multiple search queries based on the same index Syntax: query=Index name:'Search query'^boost | 'Search query'^boost query=Index name:'Search query'^boost & 'Search query'^boost The vertical...
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...
SQL CASE Statement - Learn how to use the SQL CASE statement to perform conditional logic in your SQL queries effectively.