Add MySql, BigQuery to all dialects

[omer-shtivi]

close #690

[omer-shtivi]

@AugustoFKL , @alamb
MySql doesn't seem to support

SELECT "alias"."bar baz", "myfun"(), "simple id" AS "column alias" FROM "a table" AS "alias"

in test parse_delimited_identifiers
do you prefer to move this test to another dialect? or somehow exclude the MySql from all dialects?

[AugustoFKL]

@omer-shtivi I'd say to move the test, as MySQL doesn't accept 'x' as an identifier

Thanks for adding MySQL and BigQuery to all tests.

[omer-shtivi]

If we want to support parse_similar_to and parse_like in mysql, we need to support getting the an-escaped char.
For example:

SELECT * FROM customers WHERE name {}LIKE '%a' ESCAPE '\'

at mysql needs to be:

SELECT * FROM customers WHERE name {}LIKE '%a' ESCAPE '\\'

the \ is escaped using double backslashes

[AugustoFKL]

@omer-shtivi I think this can be directed to another issue or PR.

[AugustoFKL]

I think that LGTM.

@alamb ready for your look :)

This is in essence a little refactor, right @omer-shtivi ?

[AugustoFKL]

(sorry the previous comment, missclick)
I think that LGTM.

@alamb ready for your look :)

This is in essence a little refactor, right @omer-shtivi ?

[omer-shtivi]

Hi @AugustoFKL ,
Yes, it mainly testing refactor to support all dialects

[alamb]

Thank you @omer-shtivi

[coveralls]

Pull Request Test Coverage Report for Build 3388319891

• 575 of 635 (90.55%) changed or added relevant lines in 9 files are covered.
• 3 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+0.2%) to 86.167%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
tests/sqlparser_bigquery.rs	50	56	89.29%
tests/sqlparser_sqlite.rs	49	55	89.09%
tests/sqlparser_clickhouse.rs	79	87	90.8%
tests/sqlparser_hive.rs	79	87	90.8%
tests/sqlparser_mssql.rs	79	87	90.8%
tests/sqlparser_postgres.rs	79	87	90.8%
tests/sqlparser_redshift.rs	79	87	90.8%
tests/sqlparser_snowflake.rs	79	87	90.8%

Files with Coverage Reduction	New Missed Lines	%
src/parser.rs	1	83.77%
src/lib.rs	2	10.0%

Totals
Change from base Build 3385991687:	0.2%
Covered Lines:	11530
Relevant Lines:	13381

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💛 - Coveralls