load-data-infile

问题 I\'m trying to import a very large .csv file (~4gb) into mysql. I was considering using phpmyadmin, but then you have a max upload size of 2mb. Someone told me that I have to use the command line. I was going to use these directions to import it: http://dev.mysql.com/doc/refman/5.0/en/mysqlimport.html#c5680 What would be the command to set the first row in the .csv table as the column names in the mysql table? This option is available through phpmyadmin, so their must be a mysql command line

问题 I have an unnormalized events-diary CSV from a client that I\'m trying to load into a MySQL table so that I can refactor into a sane format. I created a table called \'CSVImport\' that has one field for every column of the CSV file. The CSV contains 99 columns , so this was a hard enough task in itself: CREATE TABLE \'CSVImport\' (id INT); ALTER TABLE CSVImport ADD COLUMN Title VARCHAR(256); ALTER TABLE CSVImport ADD COLUMN Company VARCHAR(256); ALTER TABLE CSVImport ADD COLUMN NumTickets

问题 What is the best/fastest way to upload a csv file into a mysql table? I would like for the first row of data be used as the column names. Found this: How to import CSV file to MySQL table But the only answer was to use a GUI and not shell? 回答1: Instead of writing a script to pull in information from a CSV file, you can link MYSQL directly to it and upload the information using the following SQL syntax. To import an Excel file into MySQL, first export it as a CSV file. Remove the CSV headers

问题 For loading huge amounts of data into MySQL, LOAD DATA INFILE is by far the fastest option. Unfortunately, while this can be used in a way INSERT IGNORE or REPLACE works, ON DUPLICATE KEY UPDATE is not currently supported. However, ON DUPLICATE KEY UPDATE has advantages over REPLACE . The latter does a delete and an insert when a duplicate exists. This brings overhead for key management. Also, autoincrement ids will not stay the same on a replace. How can ON DUPLICATE KEY UPDATE be emulated

问题 I have a file that can contain from 3 to 4 columns of numerical values which are separated by comma. Empty fields are defined with the exception when they are at the end of the row: 1,2,3,4,5 1,2,3,,5 1,2,3 The following table was created in MySQL: +-------+--------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +-------+--------+------+-----+---------+-------+ | one | int(1) | YES | | NULL | | | two | int(1) | YES | | NULL | | | three | int(1) | YES | | NULL

问题 I am importing some data of 20000 rows from a CSV file into Mysql. Columns in the CSV are in a different order than MySQL table\'s columns. How to automatically assign columns corresponding to Mysql table columns? When I execute LOAD DATA INFILE\'abc.csv\' INTO TABLE abc this query adds all data to the first column. Please suggest auto syntax for importing data to Mysql. 回答1: You can use LOAD DATA INFILE command to import csv file into table. Check this link MySQL - LOAD DATA INFILE. LOAD