![]() Wasting memory until the whole server crashes!!! So do such things NEVER on a productiveĮRROR 2013 (HY000): Lost connection to MySQL server during query ![]() If you palm MySQL such a file the system will dump with little amount of data or it will start But unfortunately OpenOffice Calc writes numbers in the wrong format (missing double quotes): chmod o+r csv_test.CSV).Įven writing data is possible under some circumstances. mysql) or the permissions of the file have to be changed correctly (e.g. To allow the application to access the data either the application has to be started under the MySQL owner (e.g. So the data can be read by any other applications which are understanding the CSV format (e.g. This format is usually used to exchange data between different kind of applications e.g. Warning (Code 1196): Some non-transactional changed tables couldn't be rolled backĪs the table type already declares CSV tables are tables in the CSV format. Query OK, 0 rows affected, 1 warning (0.00 sec) Mysql> INSERT INTO csv_test VALUES (4, 'Record 4') Mysql> CREATE INDEX value_i ON csv_test (value) ĮRROR 1069 (42000): Too many keys specified max 0 keys allowed This is because the files can be traded in and out of the table directory without having to worry about rebuilding anything.Ĭreating an index gives the following result: INSERT INTO csv_test VALUES (1, 'Record 1'), (2, 'Record 2'), (3, 'Record 3') ĬSV tables do NOT support indexing. When you store data into the table, the storage engine saves it into the data file in CSV format.ĬSV tables do actually (5.0.12) neither support indexing nor transactions.ĬREATE TABLE csv_test (id INT, value CHAR(20)) ENGINE = CSV Its name begins with the table name and has a. The storage engine also creates a data file. The file begins with the table name and has an. When you create a CSV table, the server creates a table definition file in the database directory. If you got a already compiled MySQL binary you can find out if CSV tables are supported like this: To enable CSV tables, use the -with-csv-storage-engine option during configure when you build MySQL. OpenOffice Calc), exchange data from or with other data sources or just migrating data from an other database system to MySQL. They can be use to import data from your favourite spread sheet software (e.g. ![]() CSV tables store data in text files using the Character-Separated-Value format.ĬSV tables are an equivalent to Oracle external tables. This feature was added in MySQL release 4.1.4. MySQL CSV tables (internally also called TINA tables) are driven by the MySQL CSV storage engine.
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