Instead, regexp_matches returns TRUE if the string merely contains the pattern (unless the special tokens ^ and $ are used to anchor the regular expression to the start and end of the string). From our example above using 'ken', we can see that there were many different matches. This is done with the (underscore) wildcard. Another fairly common use case when using the LIKE operator is to match a single character in a string. Mostly throughout the course, we will see using this operator with SELECT command. LIKE Operator in SQL to Match Any Single Character. This LIKE operator is always used with WHERE clause in SELECT, UPDATE and DELETE command/statement. The regexp_matches function is similar to the SIMILAR TO operator, however, it does not require the entire string to match. In this article, we will learn about how to use LIKE operator in MySQL to fetch records based upon specified patterns in the string. If string contains the regexp pattern, returns the capturing group specified by optional parameter idx If string contains the regexp pattern, replaces the matching part with replacement Regexp_replace( string, pattern, replacement ) Returns TRUE if string contains the regexp pattern, FALSE otherwise Three tildes ( ~~~) may also be used in place of the GLOB keyword. With ilike we use the SQL and place holder characters to match varchar properties. To perform a case-insensitive LIKE you have to use ILIKE instead. 'best.txt' GLOB '*.txt' - TRUE 'best.txt' GLOB '?.txt' - TRUE 'best.txt' GLOB '?.txt' - FALSE 'best.txt' GLOB 'est.txt' - TRUE 'best.txt' GLOB 'est.txt' - TRUE - The bracket syntax is case sensitive 'Best.txt' GLOB 'est.txt' - FALSE 'Best.txt' GLOB 'est.txt' - TRUE - The ! applies to all characters within the brackets 'Best.txt' GLOB 'est.txt' - FALSE - To negate a GLOB operator, negate the entire expression - (NOT GLOB is not valid syntax) NOT 'best.txt' GLOB '*.txt' - FALSE On PostgreSQL the LIKE statement is case-sensitive.
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