https://www.cnblogs.com/yige/p/5193253.html
declare @sqlTabName varchar(100);
-- 声明游标
DECLARE C_Employees CURSOR FAST_FORWARD FOR
SELECT name FROM sysobjects WHERE type='U' ORDER BY name
OPEN C_Employees;
-- 取第一条记录
FETCH NEXT FROM C_Employees INTO @sqlTabName
WHILE @@FETCH_STATUS=0
BEGIN
EXEC('delete '+@sqlTabName)
print @sqlTabName;
-- 取下一条记录
FETCH NEXT FROM C_Employees INTO @sqlTabName
END
-- 关闭游标
CLOSE C_Employees;
-- 释放游标
DEALLOCATE C_Employees;