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Oracle TO_NUMBER function
The Oracle/PLSQL TO_NUMBER function converts a string into a number.
Oracle/PLSQL syntax of the TO_NUMBER function
TO_NUMBER( string1, [ format_mask_id ], [ nls_language_id ] )
Parameters or arguments
- string1 – string to be converted to a number.
- format_mask_id – is optional. The format that will be used to convert string1 to a number.
- nls_language_id – is not mandatory. nls_language is used to convert string1 to a number.
The TO_NUMBER function returns a numeric value.
The TO_NUMBER function can be used in the following Oracle/PLSQL versions
| Oracle 12c, Oracle 11g, Oracle 10g, Oracle 9i, Oracle 8i |
Let’s consider some examples of TO_NUMBER function and learn how to use TO_NUMBER function in Oracle PLSQL.
SELECT TO_NUMBER('1242.45', '9999.99').
FROM DUAL;
-Result: 1242.45
SELECT TO_NUMBER('456', '999').
FROM DUAL;
-Result: 456
SELECT TO_NUMBER('32', '99').
FROM DUAL;
-Result: 32
Since format_mask_id and nls_language_id parameters are optional, you can simply convert a text string to a number as follows:
SELECT TO_NUMBER ('1242.45')
FROM DUAL;
-Result: 1242.45
The Oracle TO_NUMBER function is used to convert a text value
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