SQL Server 2005 FOREIGN KEY引用第二列的“常量”值 [英]SQL Server 2005 FOREIGN KEY that references a “constant” value for a second column
SQL从一个表中查询所有日期范围,而不是在另一个表的任何日期范围之间为给定外键 [英]SQL querying all date ranges from one table not between any date ranges of another for given foreign key