Add sql server support #577

Job	Run time
integration (snowflake)	2m 12s
integration (bigquery)	3m 1s
integration (postgres)	1m 24s
single-run-different-versions (snowflake, 1_3_0)	1m 31s
single-run-different-versions (snowflake, 1_4_0)	1m 12s
single-run-different-versions (snowflake, 1_5_0)	1m 6s
single-run-different-versions (snowflake, 1_6_0)	1m 14s
single-run-different-versions (snowflake, 1_7_0)	1m 30s
single-run-different-versions (snowflake, 1_8_0)	1m 10s
single-run-different-versions (bigquery, 1_3_0)	1m 52s
single-run-different-versions (bigquery, 1_4_0)	1m 46s
single-run-different-versions (bigquery, 1_5_0)	1m 49s
single-run-different-versions (bigquery, 1_6_0)	1m 42s
single-run-different-versions (bigquery, 1_7_0)	1m 39s
single-run-different-versions (bigquery, 1_8_0)	1m 59s
single-run-different-versions (postgres, 1_3_0)	1m 13s
single-run-different-versions (postgres, 1_4_0)	1m 13s
single-run-different-versions (postgres, 1_5_0)	58s
single-run-different-versions (postgres, 1_6_0)	52s
single-run-different-versions (postgres, 1_7_0)	51s
single-run-different-versions (postgres, 1_8_0)	1m 0s
	31m 14s

Provide feedback