Table values as parameters for SQL Server stored procedure - sql

Question

I have table1 :col1, col2, col3 and table2: col1, col2, col3
My goal is to get all records
where
t2.col1 like t1.col1 and
t2.col2 like t1.col2 and
t2.col3 like t1.col3
........................................
One variant is the inner join method
select * from t2 inner join t1 on
t2.col1 like t1.col1 and
t2.col2 like t1.col2 and
t2.col3 like t1.col3
........................................
Another variant is a stored procedure based on the 'where' clause:
select * from t2
where t2.col1 like parameter1 and
t2.col2 like parameter2 and
t2.col3 like parameter3
Then I call the procedure in VBA and I use a for next loop to go through all values/parameters from an excel table1
........................................
Execution time for the join method is slower(~20, 30%) than vba+sp method, but unfortunately, for a big set of parameters, excel freeze.
........................................
Is possible to apply loop method and go thru table1 values, as parameters for the stored procedure, inside sql server, in a sql script, no vba or c++ or perl etc. ?
I am a user with no access to db/tables design.
Thank you

Answer 1

First of all, your two queries in the question are not equivalent:
select * from t2 inner join t1 on
t1.col1 like t2.col1 and
t1.col2 like t2.col2 and
t1.col3 like t2.col3
Here you have t1 like t2
select * from t2
where t2.col1 like parameter1 and
t2.col2 like parameter2 and
t2.col3 like parameter3
Here it is other way around t2 like t1.
End result would be different.
Based on the sample data it looks like it should be t2 like t1.
You can try to re-write the query using CROSS APPLY instead of JOIN, but it is unlikely to make any difference in performance.
SELECT *
FROM
t1
CROSS APPLY
(
SELECT
FROM t2
WHERE
t2.col1 like t1.col1
and t2.col2 like t1.col2
and t2.col3 like t1.col3
) AS A
;
This query structure mimics your stored procedure approach where for each row from t1 you select a set of rows from t2.