Comparing Tables in Oracle

In Oracle database, you can use the following methods to compare data differences between two tables:

1. Using the MINUS operator: You can compare the differences between two tables using the MINUS operator, for example:

SELECT * FROM table1
MINUS
SELECT * FROM table2;

This SQL statement will return only the records that exist in table1.

1. When using the EXCEPT operator: In Oracle 11g and newer versions, you can use the EXCEPT operator to compare the differences between two tables, such as:

SELECT * FROM table1
EXCEPT
SELECT * FROM table2;

This SQL statement will also return only the records that exist in table1.

1. One option could be: “By using JOIN operation, you can compare the data differences between two tables, for example:”

SELECT * 
FROM table1
FULL OUTER JOIN table2
ON table1.id = table2.id
WHERE table1.id IS NULL OR table2.id IS NULL;

This SQL statement will return records that exist in only one table.

These are some common methods to compare data differences between two tables, one can choose the appropriate method based on specific needs and circumstances.