How Can I Change the Decimal Separator in MySQL Output Without Modifying Database Settings?

Altering MySQL Decimal Separator

Users often encounter the need to change the decimal separator character (typically a period) to a different one, such as a comma. Replacing the existing decimal separator with a customized character without modifying individual queries can be a valuable option.

The MySQL documentation does not explicitly provide a solution for this. However, a workaround discovered by users is leveraging the REPLACE function to modify the results before exporting.

To illustrate, consider the following example:

SELECT REPLACE(CAST(prijs_incl AS CHAR), '.', ',')

In this query, prijs_incl represents a numeric column. The CAST function converts the numeric value to a character string. REPLACE then replaces the period (.) with a comma (,). This allows the resulting data to be used as numeric fields in spreadsheets, even if the original decimal separator is not recognized.

This technique provides a practical solution for changing the decimal separator in MySQL output without altering the underlying database settings or query syntax.

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