Github user twalthr commented on the issue:
https://github.com/apache/flink/pull/3107
@KurtYoung I agree that this syntax can be misused like `table.sql("SELECT
* FROM otherTable")`. But right now it is very inconvenient to always register
a table first, especially if you want to define multiple queries subsequently.
We could also think about `env.sql("SELECT * FROM _ JOIN _", table,
otherTable)`. Other suggestions are very welcome.
Another idea that just came to my mind. We could also use the `toString`
method of a Table. This method could implicitly register the Table under a
unique name and return that. Then we could support `env.sql(s"SELECT * FROM
$table JOIN $otherTable")`.
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