[GitHub] [arrow-datafusion] lquerel commented on issue #2043: How to build a field of type Struct with DataFusion SQL?

[GitBox <gi...@apache.org>]

lquerel commented on issue #2043:
URL: https://github.com/apache/arrow-datafusion/issues/2043#issuecomment-1074285552


   Different approaches to represent a structure in the projection part of a SELECT.
   
   **BigQuery syntax:** 
   `STRUCT('Bob' AS name, 38 AS age) AS users`
   `STRUCT<name string, age integer>('Bob', 50) as user          // syntax to specify explicitly the type of each field`
   
   **Spark syntax:**
   `NAMED_STRUCT('name', 'Bob', 'age', 50) as users`
   
   **Postgres and Athena syntax:** 
   `CAST(ROW('Bob', 38) AS ROW(name VARCHAR, age INTEGER)) AS users`
   
   **Snowflake syntax:**
   `OBJECT_CONSTRUCT('name', 'Bob'::VARCHAR, 'age',  50::INTEGER)`
   
   


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