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5 lut 2014 · Let's say I have the following three queries: Query 1. SELECT TO_CHAR(1, '<Format Mask>', 'NLS_NUMERIC_CHARACTERS = '',.''') FROM DUAL; Query 2. SELECT TO_CHAR(0.1, '<Format Mask>', 'NLS_NUMERIC_CHARACTERS = '',.''') FROM DUAL; Query 3. SELECT TO_CHAR(0.01, '<Format Mask>', 'NLS_NUMERIC_CHARACTERS = '',.''')
The syntax for the TO_CHAR function in Oracle/PLSQL is: TO_CHAR( value [, format_mask] [, nls_language] ) Parameters or Arguments value A number or date that will be converted to a string. format_mask Optional. This is the format that will be used to convert value to a string. nls_language Optional. This is the nls language used to convert ...
TO_CHAR (number) converts n to a value of VARCHAR2 data type, using the optional number format fmt. The value n can be of type NUMBER , BINARY_FLOAT , or BINARY_DOUBLE . If you omit fmt , then n is converted to a VARCHAR2 value exactly long enough to hold its significant digits.
Number Format Models. You can use number format models in the following functions: In the TO_CHAR function to translate a value of NUMBER, BINARY_FLOAT, or BINARY_DOUBLE data type to VARCHAR2 data type. In the TO_NUMBER function to translate a value of CHAR or VARCHAR2 data type to NUMBER data type.
TO_CHAR (character) converts NCHAR, NVARCHAR2, CLOB, or NCLOB data to the database character set. The value returned is always VARCHAR2 . When you use this function to convert a character LOB into the database character set, if the LOB value to be converted is larger than the target type, then the database returns an error.
The Oracle TO_CHAR() function converts a DATE or INTERVAL value to a string in a specified date format. The Oracle TO_CHAR() function is very useful for formatting the internal date data returned by a query in a specific date format.
11 wrz 2021 · The TO_CHAR() Function. When using the TO_CHAR(number) function, use the 0 format element to include leading and/or trailing zeros. Example: SELECT TO_CHAR(7, 'fm000') FROM DUAL; Result: 007. Here it is when compared to the 9 format element: SELECT.