# Functions
Get returns the global session.
Init will take out the connection configuration according to "key", select the database type according to "dbType" (if the connection configuration does not exist or the database type is not supported, an error will be returned), and then connect to the database and assign values to the global session.
MustInit checks whether Init is called and initialized normally.
# Variables
Indicates whether to enable data table caching.
The lifetime of the table cache.
# Structs
CacheField represents the structure of the data table field cached on the disk.
CacheTable represents the structure of the data table cached on the disk.
Session stores the connection to the remote database (RDB only) and some related operations of the database.
# Interfaces
CheckResult represents the result of checking the sql statement.
Field represents the data table field, which is generally retrieved through the Table.Field.
Table describes the information of the RDB data table.
# Type aliases
ConnectFunc represents a function to connect to the database.