support cast as year syntax

[tangenta]

What problem does this PR solve?

From MySQL 8.0 CAST documentation:

mysql> SELECT CAST("11:35:00" AS YEAR), CAST(TIME "11:35:00" AS YEAR);
+--------------------------+-------------------------------+
| CAST("11:35:00" AS YEAR) | CAST(TIME "11:35:00" AS YEAR) |
+--------------------------+-------------------------------+
|                     2011 |                          2021 |
+--------------------------+-------------------------------+

What is changed and how it works?

Support cast as year.

Check List

Tests

• Unit test
• Integration test

Code changes

NA

Side effects

NA

Related changes

NA

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• crazycs520
• kennytm

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