mysql - ＜choose＞多条件判断 (等同于switch,case,default)

使用介绍

choose 标签作用是通过条件判断来拼接 SQL 语句，类似于 Java 中的 switch 语句，从上到下，当有匹配的条件时，跳出 choose 语句；如果所有条件都不成立则执行 otherwise 标签中的内容

注意最先需要判断的条件要放在前面，当匹配到某个条件时，就不会判断后面的语句了。

语法

	
		...
	
	
		...
	
	
		...
	
	...
	
		...
	

	select u.id from users u
	
		u.belongDistributorUserId is not null
		and #{registerStart} <= u.createdAt
		and #{registerEnd} >= u.createdAt
		and u.id=#{id}
		and u.status=#{status}
		and u.username like concat('%',#{username},'%')
		and u.email like concat('%',#{email},'%')
		and u.phone like concat('%',#{phone},'%')
		and u.remark like concat('%',#{remark},'%')
		and u.distributorUrl =#{distributorUrl}
		and u.belongCashoutStatus=#{belongCashoutStatus}
		
			
				
					and u.belongFirstUserId=#{belongFirstUserId} and u.belongSecondUserId is not null
				
				
					and u.belongSecondUserId=#{belongSecondUserId} and u.belongThirdUserId is not null
				
			
			
				and u.belongFirstUserId=#{belongFirstUserId}
				and u.belongSecondUserId=#{belongSecondUserId}
				and u.belongThirdUserId=#{belongThirdUserId}
			
		
	
	order by u.createdAt desc