What is SQL OR operator?

What is SQL OR operator?

The “OR” is a logical operator in SQL that is used to combine two or more conditions in the WHERE clause. The WHERE clause with OR operator can be used with SELECT, UPDATE, INSERT and DELETE statements.

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How to use WHERE clause in SQL?

How to use WHERE clause in SQL?

The simple SELECT statement returns all records from the table(s) in an SQL database. For example: SELECT * FROM tbl_name; In order to return only filtered records or rows that fulfill certain criteria, the SQL WHERE clause is used in…

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What is SQL DATEDIFF function?

What is SQL DATEDIFF function?

In MS SQL Server, the DATEDIFF function is used to get the difference between two dates in terms of years, months, days, hours, minutes. e.g. SELECT DATEDIFF(day, ‘2018-03-13’, GETDATE()) AS “Difference in days”;

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What is EXISTS operator?

What is EXISTS operator?

The SQL EXISTS is an operator that is used with the WHERE clause that tests the existence of rows by using a subquery.
If that subquery in the EXISTS contains any row, it returns TRUE.

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