The function takes many different data types: BINARYFLOAT BINARYDOUBLE CHAR VARCHAR2 NCHAR NVARCHAR2 The TONUMBER returns a value in the NUMBER data type. It works similar to the TODATE and TOCHAR functions but converts the values to a number. StringToNumberSuccess: flags whether or not the String to Number conversion was successful for all records. The Oracle TONUMBER function is used to convert a text value to a number value. Value is derived from the original attribute value, converted to a standard Number. You can use 90D99, but that would make your second value as 0,4 rather than 0,40. StringToNumber: stores the result of the String to Number conversion. select tochar (a, '99D99'), tochar (a, '90D99') from ( select 50 a from dual union select 50.57 from dual union select 5.57 from dual union select 0.35 from dual union select 0.4 from dual. The following data attributes are output: if your column datatype is DATE then use your column name in place of sysdate in the below: Select TONUMBER (TOCHAR (sysdate,'YYYYMMDD')) from dual. Default value: *Number Formats.ĭescribes any data attribute or flag attribute outputs. To convert date string to number: Always convert it to char first then to number: Select TONUMBER (TOCHAR (todate ('', 'YYYY-MM-DD'),'YYYYMMDD')) from dual. SQL> insert into test (val) values (1.1) 1 row created. SQL> create table test (val number(4, 2)) Table created. Otherwise, use TOCHAR with appropriate format mask (and TONUMBER to explicitly inform Oracle what you're doing). Specified as Reference Data (Number Formatting Category). If you pass a number, you'll insert a number. The reference data is checked in order, so numbers are recognized according to the first matching row in the list. List of recognized number formats: recognizes numbers in a variety of different formats. If multiple attributes are submitted for conversion and one fails the entire record is marked as having failed, although the valid attributes will be correctly converted. Specify one or more String or String Array attributes for conversion to a Number or Number Array type.
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