> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/server/reference/sql-statements/geometry-constructors/wkb/st_polyfromwkb.md).

# ST\_PolyFromWKB

## Syntax

```bnf
ST_PolyFromWKB(wkb[,srid])
ST_PolygonFromWKB(wkb[,srid])
PolyFromWKB(wkb[,srid])
PolygonFromWKB(wkb[,srid])
```

## Description

Constructs a [POLYGON](/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/polygon.md) value using its [WKB](/docs/server/reference/sql-statements/geometry-constructors/wkb/well-known-binary-wkb-format.md) representation and [SRID](/docs/server/reference/sql-statements/geometry-constructors/geometry-properties/st_srid.md).

`ST_PolyFromWKB()`, `ST_PolygonFromWKB()`, `PolyFromWKB()` and `PolygonFromWKB()` are synonyms.

## Examples

```sql
SET @g = ST_AsBinary(ST_PolyFromText('POLYGON((1 1,1 5,4 9,6 9,9 3,7 2,1 1))'));

SELECT ST_AsText(ST_PolyFromWKB(@g)) AS p;
+----------------------------------------+
| p                                      |
+----------------------------------------+
| POLYGON((1 1,1 5,4 9,6 9,9 3,7 2,1 1)) |
+----------------------------------------+
```

<sub>*This page is licensed: GPLv2, originally from*</sub> [<sub>*fill\_help\_tables.sql*</sub>](https://github.com/MariaDB/server/blob/main/scripts/fill_help_tables.sql)

{% @marketo/form formId="4316" %}