Sql comparison operators: Difference between revisions
From wikinotes
No edit summary |
m (Will moved page Sql: comparison operators to Sql comparison operators without leaving a redirect) |
||
| (3 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
= AND/OR = | |||
<blockquote> | |||
<syntaxhighlight lang="MySQL"> | |||
SELECT * FROM users | |||
WHERE name = 'foo' OR name = 'bar' | |||
</syntaxhighlight> | |||
</blockquote><!-- AND/OR --> | |||
= IN = | |||
<blockquote> | |||
<syntaxhighlight lang="MySQL"> | |||
SELECT * FROM users WHERE name IN ('john', 'jane', 'iggy'); | |||
SELECT * FROM users WHERE name NOT IN ('john', 'jane', 'iggy'); | |||
</syntaxhighlight> | |||
</blockquote><!-- IN --> | |||
= BETWEEN = | |||
<blockquote> | |||
<syntaxhighlight lang="MySQL"> | |||
SELECT * FROM users WHERE age BETWEEN 30 AND 40; | |||
</syntaxhighlight> | |||
</blockquote><!-- BETWEEN --> | |||
= REGEXP = | = REGEXP = | ||
<blockquote> | <blockquote> | ||
<syntaxhighlight lang="MySQL"> | <syntaxhighlight lang="MySQL"> | ||
'. | '.' # any single character | ||
'[A-z][0-9]' # character range | '[A-z][0-9]' # character range | ||
'[0-9]*a' # Matches any or no occurrences of [0-9]. | '[0-9]*a' # Matches any or no occurrences of [0-9]. | ||
'^a' # matches lines starting with 'a' | '^a' # matches lines starting with 'a' | ||
'a$' # matches lines ending with 'a' | 'a$' # matches lines ending with 'a' | ||
Latest revision as of 18:37, 19 September 2021
AND/OR
SELECT * FROM users WHERE name = 'foo' OR name = 'bar'
IN
SELECT * FROM users WHERE name IN ('john', 'jane', 'iggy'); SELECT * FROM users WHERE name NOT IN ('john', 'jane', 'iggy');
BETWEEN
SELECT * FROM users WHERE age BETWEEN 30 AND 40;
REGEXP
'.' # any single character '[A-z][0-9]' # character range '[0-9]*a' # Matches any or no occurrences of [0-9]. '^a' # matches lines starting with 'a' 'a$' # matches lines ending with 'a' '^aaa$' # matches 'aaa'. not '*aaa*' (which is default in mySQL) 'aaa' # matches '.*aaa.*' unless anchored with '^' or '$'Example.
SELECT * FROM users WHERE name REGEXP '^Andr'
LIKE
glob-style matching (
%represents any or no characters).SELECT * FROM users WHERE name LIKE 'Andr%';
