# Logical Operators (Transact-SQL)

**THIS TOPIC APPLIES TO:**SQL Server (starting with 2012)Azure SQL DatabaseAzure SQL Data Warehouse Parallel Data Warehouse

Logical operators test for the truth of some condition. Logical operators, like comparison operators, return a **Boolean** data type with a value of TRUE, FALSE, or UNKNOWN.

Operator | Meaning |
---|---|

ALL | TRUE if all of a set of comparisons are TRUE. |

AND | TRUE if both Boolean expressions are TRUE. |

ANY | TRUE if any one of a set of comparisons are TRUE. |

BETWEEN | TRUE if the operand is within a range. |

EXISTS | TRUE if a subquery contains any rows. |

IN | TRUE if the operand is equal to one of a list of expressions. |

LIKE | TRUE if the operand matches a pattern. |

NOT | Reverses the value of any other Boolean operator. |

OR | TRUE if either Boolean expression is TRUE. |

SOME | TRUE if some of a set of comparisons are TRUE. |