Hi,
For MCSA: SQL Server 2012/2014 you need 70-461, 70-462 and 70-463.
https://www.microsoft.com/en-us/learning/mcsa-sql-certification.aspx
So you need 70-461 and 70-463 for MCSA: SQL Server 2012/2014
For MCSA: SQL 2016 Database Administration you need 70-764 and 70-765.
https://www.microsoft.com/en-us/learning/mcsa-sql2016-database-administration-certification.aspx
For an MCSA certification on SQL 2016 exam 70-462 does not count, only for the MSCA on SQL 2012/2014.
Danny