Added FINAL processing to SELECT and fixed conversion of selectExpr to string

[Dolso]

Hi!

While using -format I encountered an unexpected behavior

You can see it:
SELECT * FROM clickhouse FINAL;
SELECT * FROM clickhouse LIMIT 100;

Thank you in advance!

[git-hulk]

Hi @Dolso, thanks for your contribution.

Would you mind running make update_test on your side to update the test data?

[Dolso]

Would you mind running make update_test on your side to update the test data?

I did it

[git-hulk]

@Dolso Thank you!

[coveralls]

Pull Request Test Coverage Report for Build 7707214113

• -9 of 17 (47.06%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.03%) to 58.896%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
parser/parser_query.go	6	10	60.0%
parser/ast.go	2	7	28.57%

Totals
Change from base Build 7498464439:	-0.03%
Covered Lines:	4330
Relevant Lines:	7352

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💛 - Coveralls