feat: Improve support for Timestamp DT

[ovr]

Hello!

Thanks

[coveralls]

Pull Request Test Coverage Report for Build 4479158152

• 30 of 42 (71.43%) changed or added relevant lines in 5 files are covered.
• 53 unchanged lines in 7 files lost coverage.
• Overall coverage decreased (-6.9%) to 82.306%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/tokenizer.rs	0	1	0.0%
src/parser.rs	9	14	64.29%
src/ast/data_type.rs	7	13	53.85%

Files with Coverage Reduction	New Missed Lines	%
src/ast/data_type.rs	1	68.09%
src/ast/mod.rs	2	70.48%
src/ast/query.rs	2	85.07%
tests/sqlparser_snowflake.rs	2	96.43%
src/parser.rs	4	84.25%
tests/sqlparser_postgres.rs	8	97.06%
tests/sqlparser_common.rs	34	97.19%

Totals
Change from base Build 1513769481:	-6.9%
Covered Lines:	5610
Relevant Lines:	6816

---

💛 - Coveralls

[github-actions]

Thank you for your contribution. Unfortunately, this pull request is stale because it has been open 60 days with no activity. Please remove the stale label or comment or this will be closed in 7 days.

[coveralls]

Pull Request Test Coverage Report for Build 4479005885

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 27 of 29 (93.1%) changed or added relevant lines in 5 files are covered.
• 230 unchanged lines in 7 files lost coverage.
• Overall coverage decreased (-6.7%) to 82.439%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/parser.rs	9	10	90.0%
src/tokenizer.rs	0	1	0.0%

Files with Coverage Reduction	New Missed Lines	%
src/ast/data_type.rs	1	75.68%
src/ast/query.rs	2	85.07%
tests/sqlparser_snowflake.rs	2	96.43%
tests/sqlparser_postgres.rs	8	97.06%
tests/sqlparser_common.rs	46	97.19%
src/parser.rs	60	84.52%
src/ast/mod.rs	111	70.48%

Totals
Change from base Build 1513769481:	-6.7%
Covered Lines:	5605
Relevant Lines:	6799

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 4479005885

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 27 of 29 (93.1%) changed or added relevant lines in 5 files are covered.
• 230 unchanged lines in 7 files lost coverage.
• Overall coverage decreased (-6.7%) to 82.439%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/parser.rs	9	10	90.0%
src/tokenizer.rs	0	1	0.0%

Files with Coverage Reduction	New Missed Lines	%
src/ast/data_type.rs	1	75.68%
src/ast/query.rs	2	85.07%
tests/sqlparser_snowflake.rs	2	96.43%
tests/sqlparser_postgres.rs	8	97.06%
tests/sqlparser_common.rs	46	97.19%
src/parser.rs	60	84.52%
src/ast/mod.rs	111	70.48%

Totals
Change from base Build 1513769481:	-6.7%
Covered Lines:	5605
Relevant Lines:	6799

---

💛 - Coveralls