sql CREATE FUNCTION dbo.CalculateAgeFromID (@IDCard VARCHAR(18)) RETURNS INT AS BEGIN DECLARE @Age INT DECLARE @BirthDate DATE -- 调用函数获取出生日期 SET @BirthDate = dbo.GetBirthDateFromID(@IDCard) -- 计算年龄:当前日期减去出生日期 SET @Age = DATEDIFF(YEAR, @BirthDate, GETDATE()) -...
We calculate our age by the difference in full years between our current date and our date of birth. This number indicates the age at which we finished. The age when we start to get a day is one more than that. In this post we will learn how to calculate age from date of birth in...
The queries above to calculate ages and find birthdays were getting increasingly complicated. One way to simplify these is to follow the mantra: Minimize code. Maximize data. One way to do this is to add an age column to your people table: Then set it using the appropriate method. Finding ...
-- Calculate age from birth date isnull(case when sdr.StuBirMonth < @AsOfMonth then datediff(year, sdr.StuBirDate, @AsOfDate) when sdr.StuBirMonth = @AsOfMonth and sdr.StuBirDay <= @AsOfDay then datediff(year, sdr.StuBirDate, @AsOfDate) else datediff(year, sdr.StuBirDate, getdate...
SELECT DATEDIFF(year, birth_date, GETDATE()) AS age FROM person; 这里假设有一个名为person的表,其中包含一个名为birth_date的列,用于存储每个人的出生日期。DATEDIFF函数用于计算两个日期之间的差异,这里我们使用year作为第一个参数来计算年份差异。GETDATE()函数用于获取当前日期和时间,因此我们可以通过计算当...
这里,我们导入了SparkSession,并通过builder方法创建了一个名为“Calculate Age”的应用。 2. 创建数据源 接下来,我们需要创建一个包含出生日期的数据集。我们可以使用DataFrame来保存这些数据。 frompyspark.sqlimportRow# 创建样本数据data=[Row(name="John",birth_date="1990-05-01"),Row(name="Jane",birth_dat...
DROP FUNCTION IF EXISTS calculate_age; ``` 在上面的示例中,我们使用DROP FUNCTION语句删除了名为calculate_age的函数。 一旦我们定义了一个自定义函数,我们就可以在SQL查询中使用它。例如,我们可以使用SELECT语句查询一个表中所有人的年龄: ``` SELECT name, calculate_age(birth_date) AS age FROM person; ...
CREATEFUNCTIONCalculateAge(@birthDateDATE)RETURNSINTASBEGINDECLARE@ageINTSET@age=DATEDIFF(YEAR,@birthDate,GETDATE())RETURN@ageEND 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 现在,让我们查询该函数的权限: SELECTUSER_NAME(p.grantee_principal_id)AS[User],USER_NAME(p.grantor_principal_id)...
该表在数据库中的名称可能是profiles。因此，您必须在查询中使用profiles.birth_date，而不是profile....
Create table with calculated age from date of birth CREATE VIEW - how do you specify the DB CREATE VIEW permission denied in database error message Create view using ;WITH clause Creating a Date Modified and Date Created column Creating a Stored Procedure to Truncate a Table creating a table ...