按照出生日期来计算学生的年龄信息 IF OBJECT_ID('GetStudentAge','FN') IS NOT NULL DROP FUNCTION GetStudentAge GO CREATE FUNCTION GetStudentAge(@birth DATE) RETURNS INT AS BEGIN DECLARE @age INT SET @age = year(GETDATE()) - YEAR(@birth) IF MONTH(GETDATE()) < MONTH(@bir…
SQLhelper助手类编写: 1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5 using System.Threading.Tasks; 6 7 using System.Data; 8 using System.Data.SqlClient; 9 using System.Configuration; 10 11 namespace DAL 12 {…