when后面既不是表达式,也不是值 selectname,salary,casesalarywhen>=2000then'T1'when>=3000then'T2'when>=4000then'T3'when>=5000then'T4'else'T5'endassalary_levelfromstaff ;-- ERROR 1064 (42000): You have an error in your SQL syntax; 3. ...
table where 条件1 AND 条件2 OR 条件3 AND 条件4 等价于 select * from table where ( 条件1 AND 条件2 ) OR ( 条件3 AND 条件4 ) sql...,就可以在SQL语句中使用 Case When这个函数了...第一种 格式 : 简单Case函数 ...
-- ERROR 1064 (42000): You have an error in your SQL syntax; 3. 使用 CASE [col_name] WHEN [expr1] THEN [result1]… ELSE [default] END 如下语句不报错,但是结果不符合期望: when后面是表达式,不管when的条件是否满足,都是返回else里的结果 select name, salary, case salary when salary=2500 ...
Cause: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '( case when '0' =='2' and (select identification = '1' f' at line 1 ### The error may exist in file [...
--Syntax for SQL Server and Azure SQL DatabaseSimpleCASEexpression:CASEinput_expressionWHENwhen_expressionTHENresult_expression[...n][ELSE else_result_expression]ENDSearchedCASEexpression:CASEWHENBoolean_expressionTHENresult_expression[...n][ELSE else_result_expression]END ...
Doctrine - CASE WHEN CASE WHEN from嵌套CASE WHEN无子查询? Case when with else for每个'When‘条件 Mysql SELECT CASE WHEN然后返回字段 js的case when Case When SQL to LINQ 页面内容是否对你有帮助? 有帮助 没帮助 4回答 CASEWHENNULL inMySQL ...
The general syntax is as follows: CASEWHENboolean_condition1THENresult1WHENboolean_condition2THENresult2ELSEresult3END Here’s how it works: The CASE keyword marks the beginning of the expression, while END marks its conclusion, enclosing the conditional statement like a frame. ...
1topics: #CASE的两种基本用法2CASE OPERATOR3CASE STATEMENT45MariaDB [mysql]> helpcasestatement; #case的第一种用法6Name: 'CASE STATEMENT'7Description:8Syntax:9CASE case_value10WHEN when_value THEN statement_list11[WHEN when_value THEN statement_list] ...12[ELSE statement_list]13END CASE1415Or...
SQL CASE Syntax SELECTcolumn1, column2,... ,CASEWHENconditionTHENresultENDASalias_nameFROMtable; Here, column1,column2,...are the column names to be included in the result set CASEchecks thecondition resultis the result or value to be inserted to the new column ifconditionis satisfied ...
PostgreSQL CASE WHEN: Conditional Logic in Queries< The CASE WHEN expression in PostgreSQL provides conditional logic within SQL queries. This guide covers syntax, usage examples, and practical applications. What is CASE WHEN in PostgreSQL?