TO_GEOGRAPHY

解析输入并返回 GEOGRAPHY 类型的值。

如果在解析过程中发生错误，TRY_TO_GEOGRAPHY 会返回 NULL 值。

语法

TO_GEOGRAPHY(<string>)
TO_GEOGRAPHY(<binary>)
TO_GEOGRAPHY(<variant>)
TRY_TO_GEOGRAPHY(<string>)
TRY_TO_GEOGRAPHY(<binary>)
TRY_TO_GEOGRAPHY(<variant>)

参数

返回类型

Geography。

示例

SELECT
  ST_ASWKT(
    TO_GEOGRAPHY(
      'POINT(1 2)'
    )
  ) AS pipeline_geography;

┌────────────────────┐
│ pipeline_geography │
├────────────────────┤
│ POINT(1 2)         │
└────────────────────┘

SELECT
  ST_ASWKT(
    TO_GEOGRAPHY(
      FROM_HEX('0101000000000000000000F03F0000000000000040')
    )
  ) AS pipeline_geography;

┌────────────────────┐
│ pipeline_geography │
├────────────────────┤
│ POINT(1 2)         │
└────────────────────┘

SELECT
  ST_ASWKT(
    TO_GEOGRAPHY(
      PARSE_JSON('{"type":"Point","coordinates":[1,2]}')
    )
  ) AS pipeline_geography;

┌────────────────────┐
│ pipeline_geography │
├────────────────────┤
│ POINT(1 2)         │
└────────────────────┘