Categories:

String & binary functions (Matching/Comparison)

LIKE ALL¶

Performs a case-sensitive comparison to match a string against all of one or more specified patterns. Use this function in a WHERE clause to filter for matches.

Tip

You can use the search optimization service to improve the performance of queries that call this function. For details, see Search optimization service.

See also:

[ NOT ] LIKE

Syntax¶

<subject> LIKE ALL (<pattern1> [, <pattern2> ... ] ) [ ESCAPE <escape_char> ]
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Arguments¶

Required:

subject

The string to compare to the pattern(s).

pattern#

The pattern(s) that the string is to be compared to. You must specify at least one pattern.

Optional:

escape_char

Character(s) inserted in front of a wildcard character to indicate that the wildcard should be interpreted as a regular character rather than as a wildcard.

Returns¶

Returns a BOOLEAN value or NULL:

  • Returns TRUE if there is a match.

  • Returns FALSE if there isn’t a match.

  • Returns NULL if any argument is NULL.

Usage notes¶

  • To include single quotes or other special characters in pattern matching, you can use a backslash escape sequence.

  • NULL does not match NULL. In other words, if the subject is NULL and one of the patterns is NULL, that is not considered a match.

  • You can use the NOT logical operator before the subject to perform a case-sensitive comparison that returns TRUE if it does not match any of the specified patterns.

  • SQL wildcards are supported in pattern:

    • An underscore (_) matches any single character.

    • A percent sign (%) matches any sequence of zero or more characters.

  • Wildcards in pattern include newline characters (n) in subject as matches.

  • The pattern is considered a match if the pattern matches the entire input string (subject). To match a sequence anywhere within a string, start and end the pattern with % (e.g. %something%).

  • If the function is used with a subquery, the subquery should return a single row.

    For example, the following should be used only if the subquery returns a single row:

    SELECT ...
  WHERE x LIKE ALL (SELECT ...)
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Collation details¶

Only the upper, lower, and trim collation specifications are supported. Combinations with upper, lower, and trim are also supported (for example, upper-trim and lower-trim), except for locale combinations (for example, en-upper).

Examples¶

Create a table that contains some strings:

CREATE OR REPLACE TABLE like_all_example(name VARCHAR(20));
INSERT INTO like_all_example VALUES
    ('John  Dddoe'),
    ('Joe   Doe'),
    ('John_do%wn'),
    ('Joe down'),
    ('Tom   Doe'),
    ('Tim down'),
    (null);
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This query shows how to use patterns with wildcards (%) to find matches:

SELECT * 
  FROM like_all_example 
  WHERE name LIKE ALL ('%Jo%oe%','J%e')
  ORDER BY name;
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+-------------+                                                                 
| NAME        |
|-------------|
| Joe   Doe   |
| John  Dddoe |
+-------------+

This query shows that all patterns need to match for a successful result:

SELECT * 
  FROM like_all_example 
  WHERE name LIKE ALL ('%Jo%oe%','J%n')
  ORDER BY name;
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+------+                                                                        
| NAME |
|------|
+------+

This query shows how to use an escape character to indicate that characters that are usually wild cards (_ and %) should be treated as literals.

SELECT * 
  FROM like_all_example 
  WHERE name LIKE ALL ('%J%h%^_do%', 'J%^%wn') ESCAPE '^'
  ORDER BY name;
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+------------+                                                                  
| NAME       |
|------------|
| John_do%wn |
+------------+
Language: English