Nome

ST_Y — Returns the Y coordinate of a Point.

Sinopse

float ST_Y(geometry a_point);

Descrição

Retorna a coordenada Y do ponto, ou NULA se não estiver disponível. Entrada deve ser um ponto.

[Nota]

To get the minimum and maximum Y value of geometry coordinates use the functions ST_YMin and ST_YMax.

This method implements the OGC Simple Features Implementation Specification for SQL 1.1.

This method implements the SQL/MM specification. SQL-MM 3: 6.1.4

This function supports 3d and will not drop the z-index.

Exemplos

Code
SELECT ST_Y('POINT(1 2 3 4)');
Raster Outputs
2
Code
SELECT ST_Y(ST_Centroid('LINESTRING(1 2 3 4,1 1 1 1)'::geometry));
Raster Outputs
1.5