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数据集参数能够支持多值作为参数值。
主要的应用场景如下:
作为值参与操作符为 IN(在)和 NOT IN(不在)的数据集过滤器,实现集合包含运算。
作为一个数组值参与计算字段的运算,通常是作为特定函数的参数。
作为一个拓展参与自定义表的原生 SQL 查询。例如 Oracle 本不支持 SQL 参数传入数组值,但在 Wyn中,针对 Oracle 源的自定义表中的查询语句可以使用多值参数。
1. 设置查询参数时,如果勾选多值,那么意味着该查询参数为多值参数,用户输入时可以输入多个值。
此时也可以为参数设定多个默认值。
2. 在数据过滤器中使用多值参数时,需要将操作符改为在才可以生效。
含义为:数据在用户输入的值当中,即满足过滤条件。
3. 预览时输入多个值,以英文输入法的逗号分隔。