Which operator is used to search for a specified pattern in a column?
The SQL Like is a logical operator that is used to determine whether a specific character string matches a specified pattern. It is commonly used in a Where clause to search for a specified pattern in a column. This operator can be useful in cases when we need to perform pattern matching instead of equal or not equal.
The SQL LIKE Operator
The LIKE operator is used in a WHERE clause to search for a specified pattern in a column. There are two wildcards often used in conjunction with the LIKE operator:
% - The percent sign represents zero, one, or multiple characters
_ - The underscore represents a single character
The percent sign and the underscore can also be used in combinations!
LIKE Syntax is given as follows:
SELECT column1, column2, column2, ...FROM table_name WHERE columnN LIKE pattern;
SQL LIKE Examples is given as follows:
The following SQL statement selects all admins with an AdminName starting with "c":
SELECT * FROM SlightBook WHERE AdminName LIKE 'c%';
The following SQL statement selects all admins with an AdminName ending with "c":
SELECT * FROM SlightBook WHERE AdminName LIKE '%c';
The NOT NULL constraint enforces a column to not accept null values.
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