Create SQL Server Select/Delete Query from value in other table - sql-server

Question

I have a master table named Master_Table and the columns and values in the master table are below:
| ID | Database | Schema | Table_name | Common_col | Value_ID |
+-------+------------+--------+-------------+------------+----------+
| 1 | Database_1 | Test1 | Test_Table1 | Test_ID | 1 |
| 2 | Database_2 | Test2 | Test_Table2 | Test_ID | 1 |
| 3 | Database_3 | Test3 | Test_Table3 | Test_ID2 | 2 |
I have another Value_Table which consist of values that need to be deleted.
| Value_ID | Common_col | Value |
+----------+------------+--------+
| 1 | Test_ID | 110 |
| 1 | Test_ID | 111 |
| 1 | Test_ID | 115 |
| 2 | Test_ID2 | 999 |
I need to build a query to create a SQL query to delete the value from the table provided in Master_Table whose database and schema information is provided in the same row. The column that I need to refer to delete the record is given in Common_col column of master table and the value I need to select is in Value column of Value_Table.
The result of my query should create a query as given below :
DELETE FROM Database_1.Test1.Test_Table1 WHERE Test_ID=110;
or
DELETE FROM Database_1.Test1.Test_Table1 WHERE Test_ID in (110,111,115);
These query should be inside a loop so that I can delete all the row from all the database and tables provided in master table.

Answer 1

Queries don't really create queries.
One way to do what you're saying, which could be useful if this is a one time thing or very occasional thing, is to use SSMS to generate query statements, then copy them to the clipboard, paste them into the window, and execute there.
SELECT 'DELETE FROM Database_1.Test1.Test_Table1 WHERE '
+ common_col
+ ' = '
+ convert(VARCHAR(10),value)
This probably isn't what you want; it sounds more like you want to automate cleanup or something.
You can turn this into one big query if you don't mind repeating yourself a little:
DELETE T1
FROM Database_1.Test1.Test_Table1 T1
INNER JOIN Database_1.Test1.ValueTable VT ON
(VT.common_col = 'Test_ID' and T1.Test_ID=VT.Value) OR
(VT.common_col = 'Test_ID2' and T1.Test_ID2=VT.Value)
You can also use dynamic SQL combined with the first part ... but I hate dynamic SQL so I'm not going to put it in my answer.