What does insert in SQL?

What is insert in SQL Server?

The INSERT INTO T-SQL statement is used mainly to add one or more rows to the target table or view in SQL Server. This can be done by providing constant values in the INSERT INTO statement or provide the source table or view from which we will copy the rows.

What is insert and overwrite?

If you want to insert a small amount of test data, you can use this statement with VALUES. INSERT OVERWRITE: clears the existing data in a table and inserts data into the table or its partition. If you use INSERT OVERWRITE , you cannot specify the columns into which data is inserted.