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Problem scenario
Use loadcommands to import data to MySQL. Among them, the file has Chinese characters, the file encoding is UTF8, and the encoding of the table field is also set to UTF8, but the problem of garbled characters still occurs in the final import. The commands used are as follows:
LOAD DATA LOCAL INFILE '/data01/exp.txt' INTO TABLE test FIELDS TERMINATED BY '|' OPTIONALLY ENCLOSED BY '' LINES TERMINATED BY '\n' IGNORE 0 LINES (ID,NAME)
Problem environment
| software | version |
|---|---|
| MySQL | 5.6.40 |
problem causes
The main reason is that the encoding of the database is not UTF8. If the loadcommand does not specify an encoding, it will be imported using the encoding of the database. There may be many problems here, including encoding settings for fields, tables, database tables, and database servers. If there is a problem, please troubleshoot in order.
solution
1. Modify the encoding of the database
Bloggers here is mainly a database table is encoded latin1, the encoded database is modified here UTF8, SQLas follows:
ALTER DATABASE `test` CHARACTER SET 'utf8' COLLATE 'utf8_general_ci';
2. The load command specifies the encoding
Add character set utf8and then execute, the modified command is as follows:
LOAD DATA LOCAL INFILE '/data01/exp.txt' INTO TABLE test character set utf8 FIELDS TERMINATED BY '|' OPTIONALLY ENCLOSED BY '' LINES TERMINATED BY '\n' IGNORE 0 LINES (ID,NAME)
result
The problem was resolved smoothly.
to sum up
After a problem occurs, in addition to solving the problem, you must also know the cause of the problem.
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