SQL AND & OR

The AND/OR operators are used to create an SQL statement based on 2 or more conditions in SQL WHERE clause. They can be used in SELECT, UPDATE, DELETE or INSERT statement.

The AND operator selects records if all the conditions in WHERE clause are true at the same time. The OR operator selects records if any conditions in the WHERE clause are true.

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SQL SELECT DISTINCT

The SQL SELECT DISTINCT statement is used to select distinct(different, unique) value of centain database table column(s), and remove the duplicates from the result. The usage of this statement is same among MS SQL Server, Oracle, MySQL.

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SQL SELECT INTO

The SQL SELECT INTO statement has different implementations from one product to another. This topic will talk about its implementations in MS SQL Server, Oracle and MySql.

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