Pavel Pereslegin created IGNITE-23042:
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             Summary: Sql. Revise the rules for implicit type conversions
                 Key: IGNITE-23042
                 URL: https://issues.apache.org/jira/browse/IGNITE-23042
             Project: Ignite
          Issue Type: Improvement
            Reporter: Pavel Pereslegin


At the moment, the rules for implicit type conversion are not formalized. As a 
result, we allow implicit casting of types from different families everywhere 
(including for function operands, which can be confusing).

We need to formalize the rules for safe implicit conversion and follow them.

* Whether to allow implicit type conversions (of which types) during DML from 
one table to another.
* Whether to allow implicit conversions in operations.
* Whether to allow implicit conversions for function operands.
* ...



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