gosqldriver

type HeraConn interface {
	// manualy set the shard ID to which the SQL are executed. it is "sticky", it stays set for all the subsequent
	// SQLs, until ResetShardID() is called. When the shard ID is set, the shard autodiscovery is disabled
	SetShardID(shard int) error
	// resets the shard ID set by SetShardID
	ResetShardID() error
	// returns the number os shards
	GetNumShards() (int, error)

	// This is used for queries which don't have shard key. The format is "<key>=<value1>;<value2>;...<valuen>"
	SetShardKeyPayload(payload string)
	// Reset the state set via SetShardKeyPayload
	ResetShardKeyPayload()

	// Identifier used for logging, specific to a session of SQLs
	SetCalCorrID(corrID string)

	SetClientInfo(poolname string, host string) error

	SetClientInfoWithPoolStack(poolName string, host string, poolStack string) error
}

type HeraStmt interface {
	// A hit to the server for how many rows to return at once
	SetFetchSize(num int)
}