* feat: add `SET DEFAULT` syntax
Signed-off-by: Yihai Lin <yihai-lin@foxmail.com>
* test: add `CURRENT_TIMESTAMP()` as default value for `SET DEFAULT` syntax
Signed-off-by: Yihai Lin <yihai-lin@foxmail.com>
* refactor: Make the error types more precise.
Signed-off-by: Yihai Lin <yihai-lin@foxmail.com>
* chore: a minor error display enchancement for `SET DEFAULT`
Signed-off-by: Yihai Lin <yihai-lin@foxmail.com>
* refactor: Using `MODIFY COLUMN` for `DROP/SET DEFUALT`
Signed-off-by: Yihai Lin <yihai-lin@foxmail.com>
* chore: update `greptime-proto`
Signed-off-by: Yihai Lin <yihai-lin@foxmail.com>
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Signed-off-by: Yihai Lin <yihai-lin@foxmail.com>