JiajunBernoulli opened a new pull request, #2847:
URL: https://github.com/apache/calcite/pull/2847

   # insert values case
   Here is the sql
   ```
   insert into t3 values ('a', 1.0, 1), ('b', 2, 2), ('c', 3.0, CAST(3 AS 
SMALLINT)), ('d', 4.0, 4), ('e', 5.0, 5)
   ```
    the validated sql is :
   ```
   INSERT INTO `CATALOG`.`SALES`.`T3`
   VALUES ROW('a', CAST(1.0 AS INTEGER), CAST(1 AS SMALLINT)),
   ROW('b', 2, CAST(2 AS SMALLINT)),-- Encountered an integer and ended early
   ROW('c', 3.0, CAST(3 AS SMALLINT)),Encountered an samllint and ended early
   ROW('d', 4.0, 4),  -- missing cast
   ROW('e', 5.0, 5)   -- missing cast
   ```
   the right validated sql is:
   ```
   INSERT INTO `CATALOG`.`SALES`.`T3`
   VALUES ROW('a', CAST(1.0 AS INTEGER), CAST(1 AS SMALLINT)),
   ROW('b', 2, CAST(2 AS SMALLINT)),
   ROW('c', CAST(3.0 AS INTEGER), CAST(3 AS SMALLINT)),
   ROW('d', CAST(4.0 AS INTEGER), CAST(4 AS SMALLINT)),
   ROW('e', CAST(5.0 AS INTEGER), CAST(5 AS SMALLINT))
   ```


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