TO_NUMBER

Convert a string to a number. This Oracle-compatible function parses a string using a specified format and returns a numeric value.

TO_NUMBER is available from MariaDB 12.2.

TO_NUMBER converts an expression to the NUMERIC data type.

Syntax

TO_NUMBER(number_or_string_subject)
TO_NUMBER(string_subject,string_format)

Description

The function returns the DOUBLE data type for all signatures and input data types.

The format parser understands the following components:

• Digits: 0, 9

• Hex digits: X

• Group separators: comma (,) and G

• Decimal delimiters: period (.) and D

• Approximate number signature: EEEE

• Currency/numeric flags: $ and B

• Currency signatures: C, L, U

• Sign signatures: S, MI, PR

• Special format signatures: V, TM, TM9, TME

• Format flag: FM

The function was introduced for Oracle compatibility, but does not include the following features:

• The ON CONVERSION ERROR clause

• The third parameter (nlsparam)

• Internationalized components: G, D, C, L, U

These features are planned to be be implemented via MDEV-36978.

Examples

SELECT TO_NUMBER('100.00');
+---------------------+
| TO_NUMBER('100.00') |
+---------------------+
|                 100 |
+---------------------+

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