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b7e3a1e14b
* delete asciidoc files
* add migrated files
* fix errors
* Disable docs tests
* Clarify release notes page titles
* Revert "Clarify release notes page titles"
This reverts commit 8be688648d.
* Comment out edternal URI images
* Clean up query languages landing pages, link to conceptual docs
* Add .md to url
* Fixes inference processor nesting.
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Co-authored-by: Liam Thompson <32779855+leemthompo@users.noreply.github.com>
Co-authored-by: Liam Thompson <leemthompo@gmail.com>
Co-authored-by: Martijn Laarman <Mpdreamz@gmail.com>
Co-authored-by: István Zoltán Szabó <szabosteve@gmail.com>
1.3 KiB
1.3 KiB
Comparison Operators [sql-operators]
Boolean operator for comparing against one or multiple expressions.
Equality (=) [sql-operators-equality]
SELECT last_name l FROM "test_emp" WHERE emp_no = 10000 LIMIT 5;
Null safe Equality (<=>) [sql-operators-null-safe-equality]
SELECT 'elastic' <=> null AS "equals";
equals
---------------
false
SELECT null <=> null AS "equals";
equals
---------------
true
Inequality (<> or !=) [sql-operators-inequality]
SELECT last_name l FROM "test_emp" WHERE emp_no <> 10000 ORDER BY emp_no LIMIT 5;
Comparison (<, <=, >, >=) [sql-operators-comparison]
SELECT last_name l FROM "test_emp" WHERE emp_no < 10003 ORDER BY emp_no LIMIT 5;
BETWEEN [sql-operators-between]
SELECT last_name l FROM "test_emp" WHERE emp_no BETWEEN 9990 AND 10003 ORDER BY emp_no;
IS NULL/IS NOT NULL [sql-operators-is-null]
SELECT last_name l FROM "test_emp" WHERE emp_no IS NOT NULL AND gender IS NULL;
IN (<value1>, <value2>, ...) [sql-operators-in]
SELECT last_name l FROM "test_emp" WHERE emp_no IN (10000, 10001, 10002, 999) ORDER BY emp_no LIMIT 5;