Question

我正在尝试将日期字段和数字字段合并到我的查询中 - 我需要将日期显示为带有序列号的数字。

我试过了

    SELECT CAST(movement_date AS int) + CAST(sequence_no AS int) AS MOVE

这给出了日期为03/11/2015的结果42312和序列号000003.但是我需要42309000003的结果 - 所以日期和序列连接为INT而不是添加。

Answer 1

你需要将它像一个字符串一样附加到：

SELECT CAST(CAST(movement_date AS int) as varchar(5)) + CAST(CAST(sequence_no AS int) as varchar(6)) AS MOVE

修改

SELECT (CAST(CAST(movement_date AS int) as varchar(5)) + RIGHT('00000'+ CAST(CAST(sequence_no AS int) as varchar(6)),6)) AS [MOVE]

或者您可以使用REPLICATE填充所需数量的0，如下所示：

SELECT CAST(CAST(movement_date AS int) as varchar(5)) + REPLICATE('0',6-LEN(CAST(CAST(sequence_no AS int) as varchar(6)))) AS [MOVE]

Answer 2

这就是你应该怎么做的。

SELECT 
{fn concat(CAST(CAST(movement_date AS int) AS varchar), CAST(CAST(sequence_no AS int) AS varchar))} AS MOVE FROM table_name

或

SELECT 
CONCAT(CAST(CAST(movement_date AS int) AS varchar), CAST(CAST(sequence_no AS int) AS varchar)) AS MOVE FROM table_name

如果您仍想选择int或任何其他数字类型，则只需将所有内容封装到CAST（值AS anyNumberType）。

编辑：如果要在“sequence_no”中保留前导零，则不应将CAST作为int，因为这是删除前导零的位置。只是投入其他东西（可能是varchar）。

SELECT 
{fn concat(CAST(CAST(movement_date AS int) AS varchar), CAST(sequence_no AS varchar))} AS MOVE FROM table_name

或

SELECT 
CONCAT(CAST(CAST(movement_date AS int) AS varchar), CAST(sequence_no AS varchar)) AS MOVE FROM table_name

此外，您可以使用“+”符号来连接非数字值，但我更喜欢函数：）

Answer 3

SELECT CAST(movement_date AS int) + CAST(sequence_no AS int) AS MOVE

如果要使用sequence_no附加movemen_date，则不要将它们强制转换为int。

Cast tem as nvarchar.

SELECT CAST(movement_date AS nvarchar(max)) + CAST(sequence_no AS nvarchar(max)) AS MOVE

SQL SELECT Concatenate Date和Int字段并将结果转换为Int

3 个答案: