jayzhan211 commented on PR #12002:
URL: https://github.com/apache/datafusion/pull/12002#issuecomment-2290817131
@getChan I think what we need is to support string type but not modifying
the test to other already supported type
```
D create table date_table(start date, stop date, step interval);
D insert into date_table values (DATE '1992-01-01', DATE '1993-01-02',
INTERVAL '1' MONTH);
D select generate_series(start, '1993-03-01', INTERVAL '1 year') from
date_table;
┌────────────────────────────────────────────────────────────────────┐
│ generate_series("start", '1993-03-01', CAST('1 year' AS INTERVAL)) │
│ timestamp[] │
├────────────────────────────────────────────────────────────────────┤
│ [1992-01-01 00:00:00, 1993-01-01 00:00:00] │
└────────────────────────────────────────────────────────────────────┘
```
We should able to return the same result as Duckdb's
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