Question

我将像这样运行查询

SELECT * FROM table1
WHERE datasource_detail = '{"datasource_detail":[{"db_name":"database_temp","port":"3306","db_username":"root","host":"localhost","tab1":"table1","tab2":"table2"}]}'

但是需要获取参数

我尝试了一下，但是效果不佳

SELECT * FROM table1
WHERE datasource_detail = '{"datasource_detail":[{"db_name":"database_temp","port":"3306","db_username":"root","host":"localhost","tab1":"'${tab1}'","tab2":"'${tab2}'"}]}'

有人帮助我吗？

哦，我在pentaho数据集成中运行此查询：输入表

Answer 1

我建议您应该尝试将比较值放入@Variable

Declare @Compared_Value nvarchar(500);
Set @Compared_Value = '{"datasource_detail":[{"db_name":"database_temp","port":"3306","db_username":"root","host":"localhost","tab1":"'${tab1}'","tab2":"'${tab2}'"}]}'

SELECT * FROM table1
WHERE datasource_detail = @Compared_Value

如果比较值的一部分是动态的，则应使用CONCAT语句来建立比较值设置@Compared_Value = CONCATE（第1部分，第2部分，...）

SQL查询中的参数where子句

1 个答案: