ASP.Net Web应用程序转移到另一台计算机

Question

我有一个表作为支付

ser. paymentdate amount 
1. 12 mar 2007 5000 
1. 14 mar 2007 5000 
2. 6 dec 2007 4000 
3. 2 mar 2008 6000 
4. 5 nov 2008 2000 

我想一个月 从表中选择组数据，例如2007年

month amount 
mar  10000 
dec  4000 

我能得到的数据记录明智的通过这个查询，但不是明智的。

Answer 1

请尝试：

SELECT 
    DATENAME(m, paymentdate) [Month], 
    SUM(Amount) AS Amount 
FROM 
    Payment 
WHERE 
    YEAR(paymentdate)=2007 
GROUP BY DATENAME(m, paymentdate), MONTH(paymentdate) 
ORDER BY MONTH(paymentdate) 

Answer 2

的SQL LIKE子句用来比较的值使用通配符运营商类似的值。有两个通配符与LIKE运算符一起使用：

The percent sign (%) 
The underscore (_) 

百分号表示零个，一个或多个字符。下划线表示单个数字或字符。这些符号可以组合使用。

WHERE SALARY LIKE '%200%' 

发现，在任何位置

所以要根据您的病情，需要一定的变量，它包含要进行选择，然后把语句像这个月有200的任何值，

WHERE SALARYDATE LIKE '%mar%' 

你

或 一些其他的选择

WHERE SALARY LIKE '200%' Finds any values that start with 200 
WHERE SALARY LIKE '%200%' Finds any values that have 200 in any position 
WHERE SALARY LIKE '_00%' Finds any values that have 00 in the second and third positions 
WHERE SALARY LIKE '2_%_%' Finds any values that start with 2 and are at least 3 characters in length 
WHERE SALARY LIKE '%2' Finds any values that end with 2 
WHERE SALARY LIKE '_2%3' Finds any values that have a 2 in the second position and end with a 3 
WHERE SALARY LIKE '2___3' Finds any values in a five-digit number that start with 2 and end with 3