I only have experience in creating simple custom tables and I haven't done stored procedures before. I would like to know how to create a stored procedure to copy data from multiple tables into one single table. There are four tables (and a total of 6 columns in these 4 tables) from which I have to copy data to my Main table.
Table 1 - C1, C2 = Main table - C1, C2
Table 2 - C1, C2 = Main table - C3, C4
Table 3 - C1, C2 = Main table - C5, C6
Table 4 - C1, C2 = Main table - C7, C8
You can try something like that (the columns Ci should be nullable):
CREATE PROCEDURE PROC_COPYTABLE AS BEGIN INSERT INTO MAIN(C1, C2) SELECT C1, C2 FROM T1 INSERT INTO MAIN(C3, C4) SELECT C1 as C3, C2 as C4 FROM T2 INSERT INTO MAIN(C5, C6) SELECT C1 as C5, C2 as C6 FROM T3 INSERT INTO MAIN(C7, C8) SELECT C1 as C7, C2 as C8 FROM T4 END