oracel number转换成 string

To convert an Oracle number to a string in SQL, you can use the TO_CHAR function. Here's an example:

SELECT TO_CHAR(number_column) AS string_column
FROM your_table;

Replace number_column with the name of the Oracle number column in your table, and your_table with the name of your table.

The TO_CHAR function converts the number to a string representation using the default format. If you want to specify a specific format, you can provide a second argument to the function. For example:

SELECT TO_CHAR(number_column, 'FM999.99') AS string_column
FROM your_table;

This will format the number with two decimal places and no leading or trailing spaces