- 1 year ago
Adding current time to INTO OUTFILE 'C:/Output/data_.csv'
When using the INTO OUTFILE
clause in MySQL, you cannot directly specify a dynamic filename that includes the current time. The INTO OUTFILE
clause expects a fixed file name.
However, you can achieve the desired functionality by using a stored procedure that generates a dynamic SQL query and then executes it using the PREPARE
and EXECUTE
statements.
Here's an example of how to create a stored procedure that exports data to a file with a filename containing the current time:
- Create the stored procedure:
sqlDELIMITER //
CREATE PROCEDURE ExportDataWithTime()
BEGIN
DECLARE currentTime VARCHAR(50);
SET currentTime = DATE_FORMAT(NOW(), '%Y%m%d_%H%i%s');
SET @sql = CONCAT('SELECT * FROM your_table INTO OUTFILE \'C:/Output/data_', currentTime, '.csv\' FIELDS TERMINATED BY \',\' ENCLOSED BY \'"\';');
PREPARE stmt FROM @sql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
END //
DELIMITER ;
Replace your_table
with the actual name of the table you want to export.
- Call the stored procedure to export data:
sqlCALL ExportDataWithTime();
This will execute the dynamic SQL query with the current time as part of the filename and export the data from the specified table to the CSV file in the C:/Output/
directory.
Please note that using the INTO OUTFILE
clause in MySQL requires appropriate file permissions for the MySQL server to write to the specified directory. Ensure that the directory is writable by the MySQL server process to avoid permission issues.