exasol 在其他dbms中类似:从采样
中选择ST_SRID(GEOM)
是否有有效的解决方法来确定几何>几何>的SRID
柱子?到目前为止,我仅在解析 column_type
字符串中,来自 exa_user_columns
包含几何列的表的,这似乎有点笨拙...
It seems that there is no ST_SRID
function in exasol
like in other DBMS: SELECT ST_SRID(geom) FROM sampletable
Is there an efficient workaround to determine the SRID of a geometry
column? So far I only had success in parsing the COLUMN_TYPE
string from EXA_USER_COLUMNS
of the table containing the geometry column, which seems a bit clumsy...
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在Exasol中没有特定功能。
除了使用
EXA_USER_COLUMNS
您还可以使用如果您使用的是Exasol 7.1。这是一个标量函数,返回其参数的数据类型。例如:
There is no specific function for this in Exasol.
Besides using
EXA_USER_COLUMNS
you can also use TYPEOF if you are using Exasol 7.1. This is a scalar function that returns the data type of it's argument.For example: