数据库 |
validationQuery |
Oracle |
select 1 from dual |
MySQL |
select 1 |
Microsoft SQL Server |
select 1 |
DB2 |
select 1 from sysibm.sysdummy1 |
SQLite |
select 1 |
HSQLDB |
select 1 from INFORMATION_SCHEMA.SYSTEM_USERS |
postgresql |
select version() |
ingres |
select 1 |
Apache Derby |
select 1 |
H2 |
select 1 |
Informix |
select count(*) from systables |
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