11/29/2023 0 Comments Convert string to number oracleHowever, CLOBs can be passed in as arguments through implicit data conversion. This function does not support CLOB data directly. ![]() ![]() Refer to TO_CHAR (number) for more information. The 'nlsparam' argument in this function has the same purpose as it does in the TO_CHAR function for number conversions. For that reason, I prefer: select (case when NOT regexplike(xy,':digit:') then tonumber(xy) end) from ABC This will return NULL for values that are not numbers. The case statement, however, does cascade, so it is evaluated in order. Refer to " Format Models" for information on number formats. Here is a post that suggests that the same can happen in Oracle. If you specify an expr of BINARY_FLOAT or BINARY_DOUBLE data type, then you cannot specify a format model because a float can be interpreted only by its internal representation. If you specify an expr of CHAR, VARCHAR2, NCHAR, or NVARCHAR2 data type, then you can optionally specify the format model fmt. Otherwise, the function converts expr to a NUMBER value. If expr evaluates to null, then the function returns null. If expr is NUMBER, then the function returns expr. Using Processes in Oracle Integration Generation 2. ![]() TO_NUMBER converts expr to a value of NUMBER data type.Įxpr can be any expression that evaluates to a character string of type CHAR, VARCHAR2, NCHAR, or NVARCHAR2, a numeric value of type NUMBER, BINARY_FLOAT, or BINARY_DOUBLE, or null.
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