Snowflake: Support SAMPLE clause on subqueries #2164
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Add support for SAMPLE clause on subqueries/derived tables. Previously, SAMPLE clause was only supported on table references, but Snowflake and other databases also support it on subqueries. Example: SELECT * FROM (SELECT * FROM mytable) SAMPLE (10) SELECT * FROM (SELECT * FROM mytable) AS t SAMPLE (50 PERCENT) SELECT * FROM (SELECT * FROM mytable) SAMPLE (10) SEED (42)
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To fix issue#2163
Add support for SAMPLE clause on subqueries/derived tables. Previously, SAMPLE clause was only supported on table references, but Snowflake and other databases also support it on subqueries.