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https://issues.apache.org/jira/browse/CALCITE-5262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17599714#comment-17599714
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Bertil Chapuis commented on CALCITE-5262:
-----------------------------------------

ST_GeomFromWKT miss the projection, hence the introduction of ST_GeomFromEWKT 
by Postgis. I think it makes sense to implement it.

> Add functions to support WKB (well-known binary) and GeoJSON
> ------------------------------------------------------------
>
>                 Key: CALCITE-5262
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5262
>             Project: Calcite
>          Issue Type: Bug
>          Components: spatial
>            Reporter: Julian Hyde
>            Priority: Major
>
> Add functions to support WKB (well-known binary) and GeoJSON. This is made 
> possible by the switch to JTS in CALCITE-4294. The functions are:
>  * ST_AsEWKT
>  * ST_AsGeoJSON
>  * ST_AsWKB
>  * ST_GeomFromGeoJSON
>  * ST_GeomFromWKB



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