and usage in oracle

AND operator is used to combine conditions in Oracle and returns TRUE if all conditions are TRUE and FALSE otherwise. Usage includes: Combining simple conditions Nested conditions to create complex conditions Combined with the NOT operator to create negative conditions Have higher precedence than the OR operator

AND usage in Oracle

The AND operator is used in Oracle to combine two or more Boolean conditions. It returns TRUE if all conditions are TRUE, otherwise it returns FALSE.

Syntax:

<code>condition1 AND condition2 AND ...</code>

Usage:

1. Combining simple conditions:

   • For example, to find rows with a "name" column value of "John" and an "age" column value of 25, you would use:

     <code>SELECT * FROM table_name WHERE name = 'John' AND age = 25;</code>

2. Nested conditions:

   • AND operators can be nested to create more complex conditions. For example, to find rows with a "name" column value of "John", an "age" column value greater than 25, and a "gender" column value of "male", you would use:

     <code>SELECT * FROM table_name WHERE name = 'John' AND (age > 25 AND gender = 'male');</code>

3. Negative conditions:

   • The AND operator can be used in conjunction with the NOT operator to create a negative condition. For example, to find rows that do not have a "name" column value of "John", you would use:

     <code>SELECT * FROM table_name WHERE NOT (name = 'John');</code>

##Priority:

The AND operator has higher precedence than the OR operator. This means that in an expression that contains AND and OR operators, the AND operator will be executed first.

Note:

AND operators are case-sensitive, so uppercase "AND" should be used.
• When using the AND operator, care should be taken to avoid creating unnecessary or redundant conditions.
• You can use the IN and NOT IN operators as alternatives to the AND operator, depending on the specific situation.

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