TDSQL supports exporting data with mysqldump. Before export, you need to set the
net_write_timeout parameter (
set global net_write_timeout=28800) in the TDSQL Console. Note that command line utilities are not authorized by TDSQL, so you can set the parameter only in the console.
mysqldump --compact --single-transaction --no-create-info -c db_name table_name -utest -h10.xx.xx.34 -P3336 -ptest123
tableparameters should be specified based on the actual situation. If the exported data is to be imported into another set of TDSQL environment, the
-coption must be added.
TDSQL provides a professional tool to import data specified by
load data outfile. This tool shards a source file into multiple files according to the shardkey routing rules, and passes each file through to the corresponding backend database.
[tdengine@TENCENT64 ~/]$./load_data format:./load_data mode0/mode1 proxy_host proxy_port user password db_table shardkey_index file field_terminate filed_enclosed example:./load_data mode1 10.xx.xx.10 3336 test test123 shard.table 1 '/tmp/datafile' ' ' ''
- The source file must use '\n' as a line break.
mode0means that the source file is sharded but will not be imported, which is usually used for debugging. To import data, use
shardkey_indexstarts from 0. If the shardkey is the second field,
shardkey_indexshould be 1.