Hello.
I have two tables.
I need to compare values of two columns in each tables.
In result i want to receive rows from first table only with fields, which faced in second table.
Table 1
1. v11 v12 v13 v14
2. **v21** **v22** v23 v24
3. **v31** **v32** v33 v34
4. v41 v42 v43 v44
Table 2
1. v21 v22
2. v31 v32
As a result i need to receive only two strings №2 and №3 from first table.
I can't use subsearch because in the second table more then 2 million strings... And i need to start this query every minutes.
Have you any ideas?
Thanks in advance.
↧