C++ 长字符串换行

长字符串的换行有两种方法

1. 将每行中的字符串都使用引号括起来， 编译器编译器会将它们拼接起来
2. 依旧只使用一个括号，只是每行的末尾使用\来表示换行

m_pDbConnect->SetStatement(
	"INSERT INTO playerItemData (Guid, PlayerID, AccountName, ItemID, SlotID, ItemCount) VALUES (?, ?, ?, ?, ?, ?) "
	" ON DUPLICATE KEY SET SlotID = ?, ItemCount = ? "
	);

m_pDbConnect->SetStatement("\
	INSERT INTO playerItemData (Guid, PlayerID, AccountName, ItemID, SlotID, ItemCount) VALUES (?, ?, ?, ?, ?, ?) \
	ON DUPLICATE KEY SET SlotID = ?, ItemCount = ?\
	");