THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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Operator | Operand types | Description | |||
|---|---|---|---|---|---|
A = B | All primitive types | TRUE if expression A is equal to expression B otherwise FALSE. | |||
| A == B | All primitive types | Synonym for the = operator. | |||
A <=> B | All primitive types | Returns same result with EQUAL(=) operator for non-null operands, but returns TRUE if both are NULL, FALSE if one of the them is NULL. (As of version 0.9.0.) | A == B | None! | Fails because of invalid syntax. SQL uses =, not ==. |
A <> B | All primitive types | NULL if A or B is NULL, TRUE if expression A is NOT equal to expression B, otherwise FALSE. | |||
A != B | All primitive types | Synonym for the <> operator. | |||
A < B | All primitive types | NULL if A or B is NULL, TRUE if expression A is less than expression B, otherwise FALSE. | |||
A <= B | All primitive types | NULL if A or B is NULL, TRUE if expression A is less than or equal to expression B, otherwise FALSE. | |||
A > B | All primitive types | NULL if A or B is NULL, TRUE if expression A is greater than expression B, otherwise FALSE. | |||
A >= B | All primitive types | NULL if A or B is NULL, TRUE if expression A is greater than or equal to expression B, otherwise FALSE. | |||
A [NOT] BETWEEN B AND C | All primitive types | NULL if A, B or C is NULL, TRUE if A is greater than or equal to B AND A less than or equal to C, otherwise FALSE. This can be inverted by using the NOT keyword. (As of version 0.9.0.) | |||
A IS NULL | All types | TRUE if expression A evaluates to NULL, otherwise FALSE. | |||
A IS NOT NULL | All types | FALSE if expression A evaluates to NULL, otherwise TRUE. | |||
A [NOT] LIKE B | strings | NULL if A or B is NULL, TRUE if string A matches the SQL simple regular expression B, otherwise FALSE. The comparison is done character by character. The _ character in B matches any character in A (similar to . in posix regular expressions) while the % character in B matches an arbitrary number of characters in A (similar to .* in posix regular expressions). For example, 'foobar' like 'foo' evaluates to FALSE whereas 'foobar' like 'foo_ _ _' evaluates to TRUE and so does 'foobar' like 'foo%'. | |||
A RLIKE B | strings | NULL if A or B is NULL, TRUE if any (possibly empty) substring of A matches the Java regular expression B, otherwise FALSE. For example, 'foobar' RLIKE 'foo' evaluates to TRUE and so does 'foobar' RLIKE '^f.*r$'. | |||
A REGEXP B | strings | Same as RLIKE. |
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