Respuesta :

If the columns to be matched in a join have the same name, you can use the period (.) clause followed by the column name.

What is a clause?

A clause is known to be a set or group of words that  is said to be made up of a verb which is known to usually have other components.

Note that A clause can be made to form part of a sentence or it is said to be able to a complete sentence itself.

The period of agreement is seen as the contract period that is the  number of days that exist between a given start date and its end.

Hence, based on the above, in regards to java,  If the columns to be matched in a join have the same name, you can use the period (.) clause followed by the column name.

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