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sql-statement-load-data: add DuplicateOpt (#21806) #21809

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Merged
ti-chi-bot merged 4 commits into from
Sep 19, 2025
Merged

sql-statement-load-data: add DuplicateOpt (#21806) #21809

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sql-statement-load-data: add DuplicateOpt
dveeden Sep 18, 2025
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Add description
dveeden Sep 18, 2025
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Update sql-statements/sql-statement-load-data.md
dveeden Sep 18, 2025
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Update sql-statements/sql-statement-load-data.md
hfxsd Sep 19, 2025
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12 changes: 12 additions & 0 deletions sql-statements/sql-statement-load-data.md
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,9 @@ LoadDataStmt ::=

LocalOpt ::= ('LOCAL')?

DuplicateOpt ::=
( 'IGNORE' | 'REPLACE' )?

Fields ::=
('TERMINATED' 'BY' stringLit
| ('OPTIONALLY')? 'ENCLOSED' 'BY' stringLit
Expand Down Expand Up @@ -59,6 +62,15 @@ If you are using TiDB Cloud, to use the `LOAD DATA` statement to load local data
mysql --connect-timeout 15 --ssl-mode=VERIFY_IDENTITY --ssl-ca=<CA_path> --tls-version="TLSv1.2" -u root -h <host_name> -P 4000 -D test -p<your_password> --local-infile
```

### `REPLACE` and `IGNORE`

You can use `REPLACE` and `IGNORE` to specify how duplicate data is handled.

- `REPLACE`: existing data is overwritten.
- `IGNORE`: duplicate rows are ignored, keeping existing data.

By default, duplicate data leads to errors.

### S3 and GCS storage

<CustomContent platform="tidb">
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