Oracle String To Number Error
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be a number value of CHAR, VARCHAR2, NCHAR, NVARCHAR2, BINARY_FLOAT, oracle convert number to string or BINARY_DOUBLE data type. If you specify
Oracle To_number Invalid Number
an expr of CHAR, VARCHAR2, NCHAR, or NVARCHAR2 data type,
To_decimal In Oracle
then you can optionally specify the format model fmt. If you specify an expr of BINARY_FLOAT
Oracle Invalid Number
or BINARY_DOUBLE data type, then you cannot specify a format model because a BINARY_FLOAT or BINARY_DOUBLE can be interpreted only by its internal representation. Refer to "Format Models" for information on format models. The 'nlsparam' argument oracle concatenate string in this function has the same purpose as it does in the TO_CHAR function for number conversions. Refer to TO_CHAR (number) for more information. This function does not support CLOB data directly. However, CLOBs can be passed in as arguments through implicit data conversion. See Also: "Data Type Comparison Rules" for more information. Examples The following examples convert character string data into a number: UPDATE employees SET salary = salary + TO_NUMBER('100.00', '9G999D99') WHERE last_name = 'Perkins'; SELECT TO_NUMBER('-AusDollars100','L9G999D99', ' NLS_NUMERIC_CHARACTERS = '',.'' NLS_CURRENCY = ''AusDollars'' ') "Amount" FROM DUAL; Amount ---------- -100 Scripting on this page enhances content navigation, but does not change the content in any way.
fmt. The value n can be of type NUMBER, BINARY_FLOAT, or BINARY_DOUBLE. If you omit fmt, then n is converted to_date in oracle to a VARCHAR2 value exactly long enough to hold its convert char to number in oracle sql significant digits. Please refer to "Format Models" for information on number formats. The 'nlsparam' oracle round argument specifies these characters that are returned by number format elements: Decimal character Group separator Local currency symbol International currency symbol This argument can have https://docs.oracle.com/cd/E11882_01/server.112/e41084/functions211.htm this form: 'NLS_NUMERIC_CHARACTERS = ''dg'' NLS_CURRENCY = ''text'' NLS_ISO_CURRENCY = territory ' The characters d and g represent the decimal character and group separator, respectively. They must be different single-byte characters. Within the quoted string, you must use two single quotation marks around the parameter values. Ten characters https://docs.oracle.com/cd/B19306_01/server.102/b14200/functions181.htm are available for the currency symbol. If you omit 'nlsparam' or any one of the parameters, then this function uses the default parameter values for your session. Examples The following statement uses implicit conversion to combine a string and a number into a number: SELECT TO_CHAR('01110' + 1) FROM dual; TO_C ---- 1111 Compare this example with the first example for TO_CHAR (character). In the next example, the output is blank padded to the left of the currency symbol. SELECT TO_CHAR(-10000,'L99G999D99MI') "Amount" FROM DUAL; Amount -------------- $10,000.00- SELECT TO_CHAR(-10000,'L99G999D99MI', 'NLS_NUMERIC_CHARACTERS = '',.'' NLS_CURRENCY = ''AusDollars'' ') "Amount" FROM DUAL; Amount ------------------- AusDollars10.000,00- In the optional number format fmt, L designates local currency symbol and MI designates a trailing minus sign. See Table 2-17, "Matching Character Data and Format Models with the FX Format Model Modifier" for a complete listing of number format elements. Scripting on this
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss http://stackoverflow.com/questions/9890883/select-string-as-number-on-oracle the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow https://www.techonthenet.com/oracle/questions/isnumeric.php Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each in oracle other. Join them; it only takes a minute: Sign up Select string as number on Oracle up vote 6 down vote favorite I found this odd behavior and I'm breaking my brains with this... anyone has any ideas? Oracle 10g: I have two different tables, both have this column named "TESTCOL" as Varchar2(10), not nullable. If I perform this oracle string to query on table1, i get the proper results: select * from table1 where TESTCOL = 1234; Note that I'm specifically not placing '1234'... it's not a typo, that's a dynamic generated query and I will try not to change it (at least not in the near future). But, if I run the same query, on table2, I get this error message: ORA-01722: Invalid number Both queries are run on the same session, same database. I've been joining these two tables by that column and the join works ok, the only problem shows whenever I try to use that condition. Any ideas on what could be different from one table to the other? Thanks in advance. sql oracle oracle10g share|improve this question asked Mar 27 '12 at 13:50 frenetix 8451915 add a comment| 4 Answers 4 active oldest votes up vote 20 down vote accepted If TESTCOL contains non-numbers, then Oracle might run into problems when converting TESTCOL entries to numbers. Because, what it does internally, is this: select * from table1 where TO_NUMBE
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