Oracle
查询语句：select * from v$version;查询结果：BANNEROracle Database 11g Express Edition Release 11.2.0.2.0 - 64bit ProductionPL/SQL Release 11.2.0.2.0 - ProductionCORE11.2.0.2.0ProductionTNS for Linux: Version 11.2.0.2.0 - ProductionNLSRTL Version 11.2.0.2.0 - Production
SQL Server
查询语句：select * from v$version;查询结果：field1Microsoft SQL Server R2 (RTM) - 10.50.1600.1 (X64) Apr 2 15:48:46 Copyright (c) Microsoft CorporationDeveloper Edition (64-bit) on Windows NT 6.1 <X64> (Build 7600: ) (Hypervisor)
DB2
查询语句：SELECT service_level, fixpack_num FROM TABLE (sysproc.env_get_inst_info());查询结果：SERVICE_LEVEL FIXPACK_NUM ------------- ----------- DB2 v9.7.0.0 0
MySQL
查询语句：select version();查询结果version()5.7.22
PostgreSQL
查询语句：select version();查询结果：versionPostgreSQL 9.2.23 on x86_64-redhat-linux-gnu, compiled by gcc (GCC) 4.8.5 0623 (Red Hat 4.8.5-16), 64-bit
