sessionctx

type Context interface {

	// SetValue saves a value associated with this context for key.
	SetValue(key fmt.Stringer, value interface{})

	// Value returns the value associated with this context for key.
	Value(key fmt.Stringer) interface{}

	GetInfoSchema() InfoschemaMetaVersion

	GetSessionVars() *variable.SessionVars
}

type InfoschemaMetaVersion interface {
	SchemaMetaVersion() int64
}