Add the support of GRANT PRIVILEGE

[git-hulk]

This closes #18

[coveralls]

Pull Request Test Coverage Report for Build 6743550597

• 124 of 396 (31.31%) changed or added relevant lines in 4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-1.6%) to 58.205%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
parser/parser_common.go	12	14	85.71%
parser/ast.go	29	48	60.42%
parser/parse_system.go	81	332	24.4%

Totals
Change from base Build 6733863258:	-1.6%
Covered Lines:	4150
Relevant Lines:	7130

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💛 - Coveralls

[git-hulk]

@Lance726 I don't add enough test sql tests since cannot find more cases, may add more later.

[Lance726]

@Lance726 I don't add enough test sql tests since cannot find more cases, may add more later.

ok~

[git-hulk]

@orginux Can have a try if you like.

[orginux]

I would suggest adding the ALL keyword:

 GRANT ALL ON *.* TO admin_role WITH GRANT OPTION;

[git-hulk]

I would suggest adding the ALL keyword:

 GRANT ALL ON *.* TO admin_role WITH GRANT OPTION;

Thank you, done in 57ca48c

[orginux]

Great, thanks for the quick response and solving.
I found another issue, ClickHouse you can provide GRAND without parameters to have access to all columns in a table, for example:

GRANT SELECT ON database.table_1 TO table_1_select_role;
GRANT INSERT ON database.table_2 TO table_2_insert_role;

but currently, the parser supports only grants with parameters.

[orginux]

It should also be possible to submit multiple grants in a single query:

GRANT SELECT, dictGet ON *.*  TO select_all_role;

[git-hulk]

@orginux Yes, those are missing keywords in GRANT PRIVILEGE and now have been fixed.