# Error 1170: BLOB/TEXT column used in key specification without a key length

| Error Code | SQLSTATE | Error                          | Description                                                          |
| ---------- | -------- | ------------------------------ | -------------------------------------------------------------------- |
| 1170       | 42000    | ER\_BLOB\_KEY\_WITHOUT\_LENGTH | BLOB/TEXT column '%s' used in key specification without a key length |

## Possible Causes and Solutions

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