In order to generate a data backup from the current tables (Tables 1 and 2),

SELECT INTO and INSERT INTO are two popular SQL techniques that you can employ.

Whether or not backup tables are already in place determines the option.

1. Quick Backup with Table Creation using SELECT INTO
Using this method, data from the source table is directly copied into a new table.

SELECT * INTO table1_Backup FROM table1;
SELECT * INTO table2_Backup FROM table2;

• Note: This will fail if table1_Backup or table2_Backup already exist.
• Ideal for one-time backups or quick cloning.

 2. Using INSERT INTO – Backup into Existing Tables

Use this method when the backup tables are already created (i.e., the schema is predefined).

INSERT INTO table1_Backup SELECT * FROM table1;
INSERT INTO table2_Backup SELECT * FROM table2;

• No error if backup tables already exist.
• Useful for regular/daily backups where the structure is fixed.

Summary