- About TiDB
- Quick Start
- Deploy
- Software and Hardware Requirements
- Environment Configuration Checklist
- Plan Cluster Topology
- Install and Start
- Verify Cluster Status
- Test Cluster Performance
- Migrate
- Overview
- Migrate from MySQL
- Migrate from CSV Files
- Migrate from SQL Files
- Replicate Incremental Data between TiDB Clusters in Real Time
- Maintain
- Upgrade
- Scale
- Backup and Restore
- Use BR Tool (Recommended)
- Configure Time Zone
- Daily Checklist
- Maintain TiFlash
- Maintain TiDB Using TiUP
- Modify Configuration Online
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- Identify Slow Queries
- Analyze Slow Queries
- SQL Diagnostics
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- Troubleshoot Hotspot Issues
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- Troubleshoot Cluster Setup
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- Overview
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- SQL Optimization Process
- Overview
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- Tutorials
- Multiple Data Centers in One City Deployment
- Three Data Centers in Two Cities Deployment
- Two Data Centers in One City Deployment
- Read Historical Data
- Use Stale Read (Recommended)
- Use the
tidb_snapshotSystem Variable
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- Use Placement Rules
- Use Load Base Split
- Use Store Limit
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ADD COLUMNADD INDEXADMINADMIN CANCEL DDLADMIN CHECKSUM TABLEADMIN CHECK [TABLE|INDEX]ADMIN SHOW DDL [JOBS|QUERIES]ADMIN SHOW TELEMETRYALTER DATABASEALTER INDEXALTER INSTANCEALTER PLACEMENT POLICYALTER TABLEALTER USERANALYZE TABLEBACKUPBEGINCHANGE COLUMNCOMMITCHANGE DRAINERCHANGE PUMPCREATE [GLOBAL|SESSION] BINDINGCREATE DATABASECREATE INDEXCREATE PLACEMENT POLICYCREATE ROLECREATE SEQUENCECREATE TABLE LIKECREATE TABLECREATE USERCREATE VIEWDEALLOCATEDELETEDESCDESCRIBEDODROP [GLOBAL|SESSION] BINDINGDROP COLUMNDROP DATABASEDROP INDEXDROP PLACEMENT POLICYDROP ROLEDROP SEQUENCEDROP STATSDROP TABLEDROP USERDROP VIEWEXECUTEEXPLAIN ANALYZEEXPLAINFLASHBACK TABLEFLUSH PRIVILEGESFLUSH STATUSFLUSH TABLESGRANT <privileges>GRANT <role>INSERTKILL [TIDB]LOAD DATALOAD STATSMODIFY COLUMNPREPARERECOVER TABLERENAME INDEXRENAME TABLEREPLACERESTOREREVOKE <privileges>REVOKE <role>ROLLBACKSELECTSET DEFAULT ROLESET [NAMES|CHARACTER SET]SET PASSWORDSET ROLESET TRANSACTIONSET [GLOBAL|SESSION] <variable>SHOW ANALYZE STATUSSHOW [BACKUPS|RESTORES]SHOW [GLOBAL|SESSION] BINDINGSSHOW BUILTINSSHOW CHARACTER SETSHOW COLLATIONSHOW [FULL] COLUMNS FROMSHOW CONFIGSHOW CREATE PLACEMENT POLICYSHOW CREATE SEQUENCESHOW CREATE TABLESHOW CREATE USERSHOW DATABASESSHOW DRAINER STATUSSHOW ENGINESSHOW ERRORSSHOW [FULL] FIELDS FROMSHOW GRANTSSHOW INDEX [FROM|IN]SHOW INDEXES [FROM|IN]SHOW KEYS [FROM|IN]SHOW MASTER STATUSSHOW PLACEMENTSHOW PLACEMENT FORSHOW PLACEMENT LABELSSHOW PLUGINSSHOW PRIVILEGESSHOW [FULL] PROCESSSLISTSHOW PROFILESSHOW PUMP STATUSSHOW SCHEMASSHOW STATS_HEALTHYSHOW STATS_HISTOGRAMSSHOW STATS_METASHOW STATUSSHOW TABLE NEXT_ROW_IDSHOW TABLE REGIONSSHOW TABLE STATUSSHOW [FULL] TABLESSHOW [GLOBAL|SESSION] VARIABLESSHOW WARNINGSSHUTDOWNSPLIT REGIONSTART TRANSACTIONTABLETRACETRUNCATEUPDATEUSEWITH
- Data Types
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- Overview
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mysql- INFORMATION_SCHEMA
- Overview
ANALYZE_STATUSCLIENT_ERRORS_SUMMARY_BY_HOSTCLIENT_ERRORS_SUMMARY_BY_USERCLIENT_ERRORS_SUMMARY_GLOBALCHARACTER_SETSCLUSTER_CONFIGCLUSTER_HARDWARECLUSTER_INFOCLUSTER_LOADCLUSTER_LOGCLUSTER_SYSTEMINFOCOLLATIONSCOLLATION_CHARACTER_SET_APPLICABILITYCOLUMNSDATA_LOCK_WAITSDDL_JOBSDEADLOCKSENGINESINSPECTION_RESULTINSPECTION_RULESINSPECTION_SUMMARYKEY_COLUMN_USAGEMETRICS_SUMMARYMETRICS_TABLESPARTITIONSPLACEMENT_RULESPROCESSLISTREFERENTIAL_CONSTRAINTSSCHEMATASEQUENCESSESSION_VARIABLESSLOW_QUERYSTATISTICSTABLESTABLE_CONSTRAINTSTABLE_STORAGE_STATSTIDB_HOT_REGIONSTIDB_INDEXESTIDB_SERVERS_INFOTIDB_TRXTIFLASH_REPLICATIKV_REGION_PEERSTIKV_REGION_STATUSTIKV_STORE_STATUSUSER_PRIVILEGESVIEWS
METRICS_SCHEMA
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- Glossary
Migration Overview
This document describes how to migrate data to TiDB, including migrating data from MySQL and from CSV/SQL files.
Migrate from Aurora to TiDB
In a cloud environment, you can directly migrate full data to TiDB by exporting snapshot from Aurora. For details, see Migrate from Amazon Aurora MySQL Using TiDB Lightning.
Migrate from MySQL to TiDB
To migrate data from MySQL to TiDB, it is recommended to use one of the following methods:
- Use Dumpling and TiDB Lightning to migrate full data.
- Use TiDB Data Migration (DM) to migrate full and incremental data.
Use Dumpling and TiDB Lightning (full data)
Scenarios
You can use Dumpling and TiDB Lightning to migrate full data when the data size is greater than 1 TB. If you need to replicate incremental data, it is recommended to use DM to create an incremental replication task.
Migration method
- Use Dumpling to export the full MySQL data.
- Use TiDB Lightning to import the full data to TiDB. For details, refer to Migrate data using Dumpling and TiDB Lightning.
Use DM
Scenarios
You can use DM to migrate full MySQL data and to replicate incremental data. It is suggested that the size of the full data is less than 1 TB. Otherwise, it is recommended to use Dumpling and TiDB Lightning to import the full data, and then use DM to replicate the incremental data.
Migration method
For details, refer to Migrate from MySQL (Amazon Aurora).
Migrate data from files to TiDB
You can migrate data from CSV/SQL files to TiDB.
Migrate data from CSV files to TiDB
Scenarios
You can migrate data from heterogeneous databases that are not compatible with the MySQL protocol to TiDB.
Migration method
Export full data to CSV files.
Import CSV files to TiDB using one of the following methods:
Use TiDB Lightning.
Its import speed is fast. It is recommended to use TiDB Lightning in the case of large amounts of data in CSV files. For details, refer to TiDB Lightning CSV Support.
Use the
LOAD DATAstatement.Execute the
LOAD DATAstatement in TiDB to import CSV files. This is more convenient, but if an error or interruption occurs during the import, manual intervention is required to check the consistency and integrity of the data. Therefore, it is not recommended to use this method in the production environment. For details, refer to LOAD DATA.
Migrate data from SQL files to TiDB
Use Mydumper and TiDB Lightning to migrate data from SQL files to TiDB. For details, refer to Use Dumpling and TiDB Lightning.