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4 changes: 2 additions & 2 deletions docs/sql-reference/functions-reference/substring.md
Original file line number Diff line number Diff line change
Expand Up @@ -21,8 +21,8 @@ SUBSTRING(<expression> [FROM <start>] [FOR <count>])
| Parameter | Description |Supported input types |
| :--------- | :----------------------------------- | :---------------------|
| `<expression>` | The input string. | `TEXT` |
| `<start>` | Optional. The starting position for the substring. 1 is the first character. | `INTEGER` |
| `<count>` | Optional. The number of characters to be returned by the `SUBSTRING` function. Must be positive or 0. If not specified, `count` by default returns all of the string not specified by the `start` parameter. | `INTEGER` |
| `<start>` | Optional. The starting position for the substring. 1 is the first character. | `BIGINT` |
| `<count>` | Optional. The number of characters to be returned by the `SUBSTRING` function. Must be positive or 0. If not specified, `count` by default returns all of the string not specified by the `start` parameter. | `BIGINT` |

At least one of the optional arguments `<start>` and `<count>` must be given.

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