What Is the Opposite Of Regexp_like In Oracle?

The opposite of REGEXP_LIKE in Oracle is REGEXP_NOT_LIKE. This function is used to search for patterns in a string and return rows that do not match the specified regular expression pattern. It is useful for filtering out data that does not meet a specific criteria or pattern.

What is the contradistinction of REGEXP_LIKE in Oracle?

The contradict distinction of REGEXP_LIKE in Oracle is REGEXP_INSTR. REGEXP_INSTR is used to search for a regular expression pattern in a string and returns the position of the first occurrence of the pattern in the string, while REGEXP_LIKE is used to check if a string matches a regular expression pattern and returns a boolean value.

How to exclude a particular string pattern using REGEXP_LIKE in Oracle?

To exclude a particular string pattern using REGEXP_LIKE in Oracle, you can use a negative lookahead assertion (?!pattern) in your regular expression. Here is an example of how you can exclude a specific string pattern:

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SELECT column_name
FROM table_name
WHERE REGEXP_LIKE(column_name, '^(?!pattern_to_exclude).*$', 'i');

In this query:

• column_name is the name of the column you want to search for the pattern.
• table_name is the name of the table you are querying.
• pattern_to_exclude is the specific string pattern that you want to exclude.

By using ^(?!pattern_to_exclude).*$, you are telling Oracle to match any string that does not start with the specified pattern_to_exclude. The 'i' flag at the end makes the search case-insensitive.

You can modify the regular expression pattern according to your specific requirements to exclude different string patterns.

What is the opposite operation to REGEXP_LIKE in Oracle?

The opposite operation to REGEXP_LIKE in Oracle is NOT REGEXP_LIKE. This function allows you to check if a specified string does not match a regular expression pattern.