Dec 12, 2024 · To select words with specific values at the end of a word, use the LIKE operator with patterns. For example, we can use %a to find words ending with ‘ a ‘, or %ra to find words ending with ‘ ra ‘.

Jun 22, 2010 · I am trying to use sql pattern matching to check if a string value is in the correct format. The string code should have the correct format of: alphanumericvalue.alphanumericvalue. Therefore, the following are valid codes: D0030.2190 C0052.1925 A0025.2013 And the following are invalid codes: D0030 .2190 C0052. A0025.2013. A0025.2013.2013

Feb 20, 2019 · You can use CHARINDEX with starting position to find the first comma after the pattern. CROSS APPLY is used to keep the query easier to read: WITH tests(str) AS ( SELECT 'test=1,value=2.2,system=321' ) SELECT str, substring(str, pos1, pos2 - pos1) AS match FROM tests CROSS APPLY (SELECT PATINDEX('%value=%', str) + 6) AS ca1(pos1) CROSS APPLY ...

Apr 12, 2025 · The pattern ([a-z] and .) in SQL regex is used to match a lowercase letter within a specified range, followed by any single character, and then another specified character. This query will retrieve names containing a letter between ‘b’ and ‘g’ , followed by any character, and ending with the letter ‘a’ .

Jan 21, 2025 · Regex patterns consist of a combination of literal characters and special symbols that dictate matching rules. Regular expressions can be used with functions like REGEXP_LIKE, REGEXP_REPLACE, and REGEXP_SUBSTR to process and analyze textual data stored in …

Aug 23, 2021 · SQL patterns use the LIKE and NOT LIKE operators and the metacharacters (characters that stand for something other than themselves) % and _. The operators are used like this: column_name LIKE pattern. You can use these characters in a wide variety of use-cases. Here are some examples: WHERE name LIKE "%us";

Jul 28, 2021 · How to select rows where a text column starts by, ends by, or contains a string. Including slightly less trivial cases. To find strings that match a pattern, the LIKE operator is used. In the most trivial case, LIKE is identical to the = operator. These two queries are the same: SELECT id FROM book WHERE title LIKE 'Don Quijote';

Mar 1, 2021 · SQL Server provides many useful functions such as ASCII, CHAR, CHARINDEX, CONCAT, CONCAT_WS, REPLACE, STRING_AGG, UNICODE, UPPER for this purpose. In this article, we explore SUBSTRING, PATINDEX, and CHARINDEX using examples.

Jun 21, 2015 · Try pattern [a-z]ed($) with regexp operator/function. Pattern explanation: [a-z] - match any letter. es - match es literally ($) - end of string (so make sure it's not followed by any letters) Full query would be: select * from test where ingr regexp '[a-z]es($)'

Nov 9, 2023 · Using ENDS WITH in SQL enables you to easily check if a string ends with a specific substring or suffix. But how exactly does this function work under the hood? When should you use ENDS WITH versus other SQL string capabilities? What are some pro tips and optimizations when leveraging ENDS WITH in real-world applications?