RIGHT¶

Returns a rightmost substring of its input.

RIGHT(STR,N) is equivalent to SUBSTR(STR,LENGTH(STR)-N+1,N).

Syntax¶

RIGHT( <expr> , <length_expr> )

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expr

The expression for which you want the rightmost substring. The expression must evaluate to a VARCHAR or BINARY value.

length_expr

The length should be an expression that evaluates to an integer. It should specify:

The length should be greater than or equal to zero. If the length is a negative number, the function returns an empty string.

The data type of the returned value is the same as the data type of the input value (BINARY or VARCHAR).

If length_expr is greater than the length of expr, then the function returns expr.

Collation applies to VARCHAR inputs. Collation does not apply if the input data type of the first parameter is BINARY.
No impact. Although collation is accepted syntactically, collations have no impact on processing. For example, languages with two-character and three-character letters (e.g. “dzs” in Hungarian, “ch” in Czech) still count those as two or three characters (not one character) for the length argument.
The collation of the result is the same as the collation of the input. This can be useful if the returned value is passed to another function as part of nested function calls.

SELECT RIGHT('ABCDEFG', 3);

---------------------+
 RIGHT('ABCDEFG', 3) |
---------------------+
 EFG                 |
---------------------+

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