SQL Server - 使用带有intersect的count函数

Question

如何计算此查询的结果？

SELECT id FROM table1 where  col1 like '%abcd%'
intersect
SELECT id from table2 where col2 like '%efgh%'

Answer 1

SELECT COUNT(*) FROM
(
 SELECT id FROM table1 where  col1 like '%abcd%'
 intersect
 SELECT id from table2 where col2 like '%efgh%'
) I