Export MySQL query to Excel file: Difference between revisions
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# Verify the data column is in correct position | # Verify the data column is in correct position | ||
#* {{exclaim}} Because the CSV is not well-formatted, sometimes the data column after imported to Excel is in wrong position. If the data size is less than 65,535 rows, convert CSV to Excel/XLS by [https://zh-tw.libreoffice.org/discover/calc/ LibreOffice Calc] is recommended. | #* {{exclaim}} Because the CSV is not well-formatted, sometimes the data column after imported to Excel is in wrong position. If the data size is less than 65,535 rows, convert CSV to Excel/XLS by [https://zh-tw.libreoffice.org/discover/calc/ LibreOffice Calc] is recommended. | ||
#* If the data size is larger than 65,535 rows, Adjust the MySQL query to avoid the column value contains the enclosure character e.g. {{kbd | key=Tab}} key | #* If the data size is larger than 65,535 rows, Adjust the MySQL query to avoid the column value contains the | ||
#** enclosure character e.g. {{kbd | key=Tab}} key | |||
#** escape the enclosure character e.g. {{kbd | key=<nowiki>"</nowiki>}} | |||
#** return symbol to separate different data row. | |||
== Technical issues: If it costs too much time to convert to Excel file == | == Technical issues: If it costs too much time to convert to Excel file == | ||
Revision as of 12:02, 28 September 2016
Export MySQL query to Excel file (XLS or XLSX file)
Tools
One step conversion: ex MySQL query -> Excel file
Methods of exporting MySQL query -> XLS/XLSX file
- PHPExcel
- other MySQL client softwares
Notice the limit of Excel XLS file format:
- XLS file format[1][2]: Maximum of worksheet size is 65,536 rows by 256 columns. First row is column name.
Actual data size is 65,535 rows. - XLSX file format [3]: Maximum of worksheet size is 1,048,576 rows by 16,384 columns.
Two steps conversion ex: MySQL query -> CSV file -> Excel file
Step 1: Export the MySQL query -> CSV/XLS file
- PHPExcel or MySQL client softwares
- MySQL :: MySQL 5.7 Reference Manual :: 8.4.3 Dumping Data in Delimited-Text Format with mysqldump
- Required FILE permission ex: GRANT FILE ON *.* TO 'user_name'@'localhost'; If you met the following error message:
mysqldump: Got error: 1045: Access denied for user 'user_name'@'localhost' (using password: YES) when executing 'SELECT INTO OUTFILE'
Step 2: Import CSV to XLSX or XLS file format.
- MS Excel
- LibreOffice Calc
Step 3: Data verification
- Verify the data rows count: Equal to the rows count of MySQL query. Not equal to 65,535 rows or less than the rows count of MySQL query.
- Verify the data column is in correct position
- Because the CSV is not well-formatted, sometimes the data column after imported to Excel is in wrong position. If the data size is less than 65,535 rows, convert CSV to Excel/XLS by LibreOffice Calc is recommended.
- If the data size is larger than 65,535 rows, Adjust the MySQL query to avoid the column value contains the
- enclosure character e.g. Tab key
- escape the enclosure character e.g. "
- return symbol to separate different data row.
Technical issues: If it costs too much time to convert to Excel file
The important steps before generating CSV file. These steps reduce the problems when the CSV file was converted to Excel file.
- Add delimiter character between different column ex: comma symbol (,) or tab symbol
- Add enclosure character ex: double quote symbol (") or single quote symbol (')
- Add escape character escape the column value if contains the enclosure character
- Remove return symbol[4]:
SELECT REPLACE(REPLACE(REPLACE(`my_column`, '\r\n', ' '), '\n', ' '), '\r', ' ')