Exporting Orders Table Data for Backup
Backup a Table to a Text File Using SELECT ... INTO OUTFILE
Write a MySQL query to back up the "Orders" table data into a text file.
Solution:
-- This command exports all data from the Orders table to a CSV file
SELECT * FROM Orders
-- Specifies the output file location and name as /tmp/Orders_backup.txt
INTO OUTFILE '/tmp/Orders_backup.txt'
-- Sets the field separator to a comma for CSV formatting
FIELDS TERMINATED BY ','
-- Encloses field values in double quotes to handle special characters
ENCLOSED BY '"'
-- Sets the line separator to a newline character for row separation
LINES TERMINATED BY '\n';
Explanation:
- Purpose of the Query:
- To create a backup of table data in a text format for easy recovery or analysis.
- Demonstrates exporting data using SELECT ... INTO OUTFILE.
- Key Components:
- Defines field and line delimiters to format the output.
- Outputs data to a specified file path.
- Real-World Application:
- Useful for data migration or creating a snapshot of table contents.
Note:
- Ensure the MySQL server has write access to the output directory.
- The file must not already exist.
For more Practice: Solve these Related Problems:
- Write a SQL query to export the "Orders" table into a CSV file using a semicolon as the delimiter.
- Write a SQL query to export only selected columns from the "Orders" table into a text file with pipe-delimited fields.
- Write a SQL query to export the "Orders" table into a CSV file and include a header row in the output.
- Write a SQL query to export the "Orders" table data into a text file using UTF-8 encoding and custom line terminators.
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Previous MySQL Exercise: Backup Database Using MySQL Enterprise Backup.
Next MySQL Exercise: Restore Data from a Text File Using LOAD DATA INFILE.
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