hasura/graphql-engine

Support for ST_Transform of PostGIS

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#3,229 建立於 2019年10月24日

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 (4 留言) (0 反應) (1 負責人)TypeScript (31,371 star) (2,787 fork)batch import
a/data/postgresc/servere/easygood first issuek/enhancementp/medium

描述

How can I use ST_Transform postgis function to transform ESPG from one to another projection? From this official document, the query looks like

ST_Transform(geometry g1, integer srid) example - ST_Transform(way, 4326)

貢獻者指南

技術棧
typescriptsqlpostgresqlgraphql
領域
backenddatabase
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
4
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
3-5 days
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
needs investigation
前置要求
Basic knowledge of PostGISUnderstanding of Hasura GraphQL Engine
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
30
研究方向
First, investigate if Hasura already supports ST Transform via custom SQL functions or if there is a configuration to enable PostGIS functions. Check the official Hasura documentation and GitHub issues for similar requests. Look at the Hasura source code in the repository, particularly in the server side handling of Postgres functions, to understand how to expose PostGIS functions through GraphQL. Comment on the issue to ask for clarification on expected usage and whether it should be a built in or custom function.