Database Developer Interview Question:

Please explain what are string functions in SQL?

Submitted by: Muhammad

SQL string functions are used primarily for string manipulation. Some of the widely used SQL string functions are

☛ LEN() – It returns the length of the value in a text field
☛ LOWER() – It converts character data to lower case
☛ UPPER() – It converts character data to upper case
☛ SUBSTRING() – It extracts characters from a text field
☛ LTRIM() – It is to remove all whitespace from the beginning of the string
☛ RTRIM() – It is to remove all whitespace at the end of the string
☛ CONCAT() – Concatenate function combines multiple character strings together
☛ REPLACE() – To update the content of a string.
Submitted by: Muhammad