Oracle | SQL | regexp | regular expressions in SQL

@Dream IT solutions
WEBSITE:www.dreamitsolution.in
google:https://goo.gl/maps/GUQRXYusbuuyysaT6

Mail us at:[email protected]

contact: +91 9025762542
______________________________________________
REGEXP_LIKE: This function returns true if a string matches a given pattern, or false otherwise. It is similar to the LIKE operator, but allows more flexibility and precision. You can use it in the WHERE clause of a query to filter rows based on a regexp condition.

• REGEXP_INSTR: This function returns the position of the first occurrence of a pattern in a string, or zero if no match is found. You can specify the start position, the occurrence number, and the return option of the function. You can use it to locate a substring that matches a regexp pattern within a larger string.

• REGEXP_REPLACE: This function replaces all occurrences of a pattern in a string with another string. You can specify the start position and the occurrence number of the replacements. You can use it to modify or remove parts of a string that match a regexp pattern.

• REGEXP_SUBSTR: This function returns a substring that matches a pattern from a string. You can specify the start position, the occurrence number, and the modifier options of the function. You can use it to extract a portion of a string that matches a regexp pattern.

• REGEXP_COUNT: This function returns the number of times a pattern occurs in a string. You can specify the start position and the modifier options of the function. You can use it to count how many times a regexp pattern is found in a string.