versioned_docs/version-2.0/sql-manual/sql-functions/spatial-functions/st-asbinary.md

---
{
    "title": "ST_ASBINARY",
    "language": "en"
}
---

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## Description

Convert a geometric figure to a standard WKB (Well-known binary) representation.

At present, the supported geometry is: Point, LineString, Polygon.

## Syntax

```sql
ST_ASBINARY( <geo>)
```

## Parameters

| Parameters | Instructions |
| -- |----------|
| `<geo>` | The graph that needs to be converted |

## Return Value

The WKB representation of the geometry

## Examples

```sql
select ST_AsBinary(st_point(24.7, 56.7));
```

```text
+----------------------------------------------+
| st_asbinary(st_point(24.7, 56.7))            |
+----------------------------------------------+
| \x01010000003333333333b338409a99999999594c40 |
+----------------------------------------------+
```

```sql
select ST_AsBinary(ST_GeometryFromText("LINESTRING (1 1, 2 2)"));
```

```text
+--------------------------------------------------------------------------------------+
| st_asbinary(st_geometryfromtext('LINESTRING (1 1, 2 2)'))                            |
+--------------------------------------------------------------------------------------+
| \x010200000002000000000000000000f03f000000000000f03f00000000000000400000000000000040 |
+--------------------------------------------------------------------------------------+
```

```sql
select ST_AsBinary(ST_Polygon("POLYGON ((114.104486 22.547119,114.093758 22.547753,114.096504 22.532057,114.104229 22.539826,114.106203 22.542680,114.104486 22.547119))"));
```

```text
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| st_asbinary(st_polygon('POLYGON ((114.104486 22.547119,114.093758 22.547753,114.096504 22.532057,114.104229 22.539826,114.106203 22.542680,114.104486 22.547119))'))                                                         |
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| \x01030000000100000006000000f3380ce6af865c402d05a4fd0f8c364041ef8d2100865c403049658a398c3640b9fb1c1f2d865c409d9b36e334883640de921cb0ab865c40cf876709328a36402cefaa07cc865c407b319413ed8a3640f3380ce6af865c402d05a4fd0f8c3640 |
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
```