pitrou commented on a change in pull request #11999:
URL: https://github.com/apache/arrow/pull/11999#discussion_r800468926
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File path: format/FlightSql.proto
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@@ -933,6 +933,16 @@ message CommandGetDbSchemas {
* [optional] table_schema: bytes not null (schema of the table as described
in Schema.fbs::Schema,
* it is serialized as an IPC
message.)
* >
+ * Fields on table_schema may contain the following metadata:
+ * - ARROW:FLIGHT:SQL:CATALOG_NAME - Table's catalog name
+ * - ARROW:FLIGHT:SQL:DB_SCHEMA_NAME - Database schema name
+ * - ARROW:FLIGHT:SQL:TABLE_NAME - Table name
+ * - ARROW:FLIGHT:SQL:PRECISION - Column precision/size
+ * - ARROW:FLIGHT:SQL:SCALE - Column scale/decimal digits
Review comment:
Why are precision and scale useful? Can they annotate non-decimal
columns?
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