Learn how to resolve it in this article. What Is the Invalid Number Error? This is just dealing with numbers, whereas the OP was incorrectly describing a string to the to _ number () function.
EdThe point being the number calculations can make unexpected numbers of characters, so you have to watch out feeding them into strings. Only numeric fields or character fields containing numeric data may be used in arithmetic functions or expressions. I will never, no one should ever, go the hint route on this, that would be a not smart approach.
Read our solution here. Is there a way to skip it and get or NULL instead? CHAR, VARCHAR NCHAR, or NVARCHAR a numeric value of type NUMBER , BINARY_FLOAT, or BINARY_DOUBLE, or null. TO_NUMBER converts expr to a value of NUMBER data type. If expr is NUMBER , then the function returns expr.
An implicit conversion is where a value is being converted by Oracle but you didn’t specify it. Description of the illustration to_number. Resolution : Check description of table and change the column to varcharcolumn if you want to insert the varcharvalue in the column. If you are using the to_number function, make sure the format mask fits all possible character strings in the table.
Tableau Desktop Professional Edition, ver 10. If you know that a column contains both valid numbers and character strings, make sure that all rows which do not contain valid numbers are being excluded in the WHERE clause.