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Q&A Does Snowflake NATURAL JOIN support outer-style join?

Snowflake's NATURAL JOIN follows the SQL standard in that it is simply an (inner) equi-join with implied column names. (This is discouraged as it's safer and clearer to just explicitly write the jo...

posted 1y ago by qwr‭  ·  edited 1y ago by qwr‭

Answer
#4: Post edited by user avatar qwr‭ · 2023-07-28T03:34:41Z (over 1 year ago)
  • Snowflake's `NATURAL JOIN` follows the SQL standard in that it is simply an (inner) equi-join with implied column names. (This is discouraged as it's safer and clearer to just explicitly write the join condition.) See [Snowflake join docs](https://docs.snowflake.com/en/sql-reference/constructs/join). In the equality comparison, NULLs will not be retained.
  • Snowflake's `NATURAL JOIN` follows the SQL standard in that it is simply an (inner) equi-join with implied column names. (This is discouraged as it's safer and clearer to just explicitly write the join condition.) See [Snowflake join docs](https://docs.snowflake.com/en/sql-reference/constructs/join). In the equality comparison, NULLs will not be retained. The outer join may still add back in NULLs for unmatched rows.
#3: Post edited by user avatar qwr‭ · 2023-07-28T03:29:23Z (over 1 year ago)
  • Snowflake's `NATURAL JOIN` follows the SQL standard in that it is simply an equi-join with implied column names. (This is discouraged as it's safer and clearer to just explicitly write the join condition.) See [Snowflake join docs](https://docs.snowflake.com/en/sql-reference/constructs/join). In the equality comparison, NULLs will not be retained.
  • Snowflake's `NATURAL JOIN` follows the SQL standard in that it is simply an (inner) equi-join with implied column names. (This is discouraged as it's safer and clearer to just explicitly write the join condition.) See [Snowflake join docs](https://docs.snowflake.com/en/sql-reference/constructs/join). In the equality comparison, NULLs will not be retained.
#2: Post edited by user avatar qwr‭ · 2023-07-28T03:28:19Z (over 1 year ago)
  • Snowflake's `NATURAL JOIN` follows the SQL standard in that it is simply an equi-join with implied column names. (Natural joins are discouraged because they implicitly use column names.) See [Snowflake join docs](https://docs.snowflake.com/en/sql-reference/constructs/join). In the equality comparison, NULLs will not be retained.
  • Snowflake's `NATURAL JOIN` follows the SQL standard in that it is simply an equi-join with implied column names. (This is discouraged as it's safer and clearer to just explicitly write the join condition.) See [Snowflake join docs](https://docs.snowflake.com/en/sql-reference/constructs/join). In the equality comparison, NULLs will not be retained.
#1: Initial revision by user avatar qwr‭ · 2023-07-28T03:27:25Z (over 1 year ago)
Snowflake's `NATURAL JOIN` follows the SQL standard in that it is simply an equi-join with implied column names. (Natural joins are discouraged because they implicitly use column names.) See [Snowflake join docs](https://docs.snowflake.com/en/sql-reference/constructs/join). In the equality comparison, NULLs will not be retained.