如何从两个表中选择两个在同一个字段中具有相同值的行？

Question

I have two tables that have the same column names.

There is a field called Call_Status in both tables.

I want to retrieve the records having Call_Status="Open" from both tables. ie I want a query that can retrieve all the records of table1 having call_Status="Open" & then from table2 having call_Status="Open"

I have no idea how to do this and would appreciate some guidance

Answer 1

If you want to get all the matching rows from the first table and all the matching rows from the second table (as opposed to joining rows together), then you could use a union.

SELECT column names FROM table1 WHERE call_status='Open'
UNION ALL
SELECT column names FROM table2 WHERE call_status='Open'

You can use UNION instead of UNION ALL to get unique rows, as pointed out by Fionnuala.

Answer 2

you can use join query.

SELECT column_name(s)
FROM table1
INNER JOIN table2
ON table1.Call_Status=table2.Call_Status and table1.Call_Status='Open' ;

Answer 3

You can join the two tables by the attribute call_status like below.

SELECT (Your column names) FROM table1 INNER JOIN table2 ON Table1.call_status='open' and Table2.call_status='open';