WHEN匹配表达式 指定要在 CASE 语句中进行求值的表达式。如果选择器表达式与某个匹配表达式匹配,那么将执行相应 THEN 子句中的语句。 THEN 此关键字引入要在相应布尔表达式求值为 TRUE 时执行的语句。 statement 指定一个或多个 SQL 或 PL/SQL 语句,每个语句都以分号终止。
and C.classifid = K.classif_id etc., etc., I can get this query to work fine (doing it in mysql workbench), but when I try to convert to active record in my CI model, the CASE and IF parts throw me off. I have all the selects and joins working (here's an excerpt of the...
CASE WHEN search_condition THEN statement_list [WHEN search_condition THEN statement_list] ... [ELSE statement_list] END CASE 描述说明 CASE 语句的出现,实现了在存储过程编写复杂条件的要求。如果查询条件为真,那么会执行then代码块的语句。如果没有符合条件的情况,则会执行ELSE语句下的部分。每个 statement...
selectid,name,sex,casewhensalary>3000then'high'whensalarybetween1000and3000then'middle'else'low'endassalary_levelfromsalary; AI代码助手复制代码 假如以3000元为界限,将3000元以上的工资归为‘high'类,3000元以下包括3000元的工资归为‘low’类,则此时也可以采用case when的第一种用法: selectid,name,sex,c...
Caused by: java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected AST node: CASE near line 1, column 49 [SELECT t FROM Thing t WHERE name LIKE :name AND CASE WHEN (:minVal <= 0) THEN TRUE ELSE (val <= :minVal) END AND CASE WHE...
0 Sql server CASE and IN where clause 1 SQL CASE WHEN ...AND 0 CASE and IN in WHERE 5 "CASE WHEN" operator in "IN" statement 0 SQL: CASE WHEN with OR in WHERE 0 SQL Server : CASE WHEN in the WHERE Clause with IN Hot Network Questions Has technology regressed in the...
**/@Slf4jpublicclassCaseWhenElDataCalcHelper {/*** case when 完整语法*/privateSyntaxStatement caseWhenStmt;publicCaseWhenElDataCalcHelper(SyntaxStatement caseWhenStmt) {this.caseWhenStmt =caseWhenStmt; }/*** 计算case..when的结果 * *@paramsuppliers 原始所有值 ...
一、简介、CaseWhen ELSE END共有两种用法: 说实话,这种就是数据库版的switch语句,但是只是形式上很像,实际上还是有差别的!!!...1、CASEWHEN THEN ELSE END 第一种用法CASE(表达式) WHEN 值 THEN result1 WHEN 值 THEN result2 ... ...WHEN 值 THEN resultN ELSE default_result 类似与switch语句sql语句...
The CASE statement goes through conditions and returns a value when the first condition is met (like an IF-THEN-ELSE statement). So, once a condition is true, it will stop reading and return the result. If no conditions are true, it returns the value in the ELSE clause. ...
public void setWhenExpression(SQLFragment whenExpression) getWhenExpressionpublic SQLFragment getWhenExpression() setThenExpressionpublic void setThenExpression(SQLFragment thenExpression) getThenExpressionpublic SQLFragment getThenExpression() getSQLTextpublic java.lang.String getSQLText() ...