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Elastic Docs ›Elasticsearch Guide [8.8] ›SQL ›Functions and Operators

Comparison Operators

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IMPORTANT: This documentation is no longer updated. Refer to Elastic's version policy and the latest documentation.

Comparison Operators

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Boolean operator for comparing against one or multiple expressions.

Equality (=)

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SELECT last_name l FROM "test_emp" WHERE emp_no = 10000 LIMIT 5;

Null safe Equality (<=>)

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SELECT 'elastic' <=> null AS "equals";

    equals
---------------
false
SELECT null <=> null AS "equals";

    equals
---------------
true

Inequality (<> or !=)

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SELECT last_name l FROM "test_emp" WHERE emp_no <> 10000 ORDER BY emp_no LIMIT 5;

Comparison (<, <=, >, >=)

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SELECT last_name l FROM "test_emp" WHERE emp_no < 10003 ORDER BY emp_no LIMIT 5;

BETWEEN

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SELECT last_name l FROM "test_emp" WHERE emp_no BETWEEN 9990 AND 10003 ORDER BY emp_no;

IS NULL/IS NOT NULL

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SELECT last_name l FROM "test_emp" WHERE emp_no IS NOT NULL AND gender IS NULL;

IN (<value1>, <value2>, ...)

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SELECT last_name l FROM "test_emp" WHERE emp_no IN (10000, 10001, 10002, 999) ORDER BY emp_no LIMIT 5;
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