将 getdate 转换为格式 22nd APR, 2022

Question

谁能帮我解决这个问题， 如何将 getdate() 转换为格式 22nd APR, 2022, 21st 2022 年 4 月， 23rd 2022 年 4 月， 2022 年 4 月 24， nd 或 th 或 rd 在这里很重要。

到目前为止我已经做到了，

SELECT 格式 (getdate(), 'dd MMM, yyyy') 作为日期

提前致谢！

Answer 1

对于 SQLServer：

SELECT FORMAT(getdate(),'d'
+IIF(DAY(getdate()) IN (1,21,31),'''st'''
,IIF(DAY(getdate()) IN (2,22),'''nd'''
,IIF(DAY(getdate()) IN (3,23),'''rd''','''th''')))
+' MMM' +', '+ 'yyyy') As [Formatted Date]

Here is a demo

Answer 2

也许像下面这样的查询

SELECT FORMAT (getdate(), 'd'''+v.suff+''' MMM, yyyy') as date
FROM
(values (1,'st'), (2,'nd'),(3,'rd'), (4,'th')
, (5,'th'), (6,'th'), (7,'th'), (8,'th')
, (9,'th'), (0,'th'))v(num,suff)
WHERE DAY(getdate())%10=v.num

Demo link

Answer 3

这个涵盖第11、12和13号。

select 
cast(day(getdate()) as nvarchar)+ 
case when day(getdate()) in (11,12,13)
    then 'th'
else
case right(day(getdate()),1)
        when 1 then
            'st'
        when 2 then 
            'nd'
        when 3 then
         'rd'
        else 'th'
    end
end + format(getdate(),' MMM yyyy') as suffixed

Answer 4

我会在表示层执行此格式设置 - 报告工具、C# 和 PHP 等客户端语言等都具有比 T-SQL.[=19 更详尽和更高效的日期格式设置方法=]

如果必须在 T-SQL 完成，我会避免 FORMAT() 因为它是 slow as molasses and since, presumably, you're going to call this more than once or for sets, I would put it in an inline table-valued function which will be more efficient than a scalar UDF and much more maintainable than putting this conditional logic inline. Using the CASE expression from :

CREATE FUNCTION dbo.SpecificFormat(@d date)
RETURNS TABLE
WITH SCHEMABINDING
AS
  RETURN 
  (
    WITH s(d) AS 
    (
      SELECT REPLACE(UPPER(CONVERT(varchar(13), @d, 106)),' ','.')
    ),
    p(d,m,y) AS
    (
      SELECT PARSENAME(d,3), PARSENAME(d,2), PARSENAME(d,1)
      FROM s
    )
    SELECT OutputFormat = CONCAT_WS(' ', d + CASE 
      WHEN d % 100 IN (11,12,13) THEN 'th'
      WHEN d % 10 = 1 THEN 'st'
      WHEN d % 10 = 2 THEN 'nd'
      WHEN d % 10 = 3 THEN 'rd'
      ELSE 'th' END, m + ',', y)
    FROM p
  );

示例：

DECLARE @d date = getdate();
SELECT OutputFormat FROM dbo.SpecificFormat(@d);

输出：

OutputFormat
22nd APR, 2022

SELECT o.name, f.OutputFormat
  FROM sys.objects AS o
  CROSS APPLY dbo.SpecificFormat(o.modify_date) AS f;

输出：

name	OutputFormat
SpecificFormat	22nd APR, 2022
QueryNotificationErrorsQueue	13th APR, 2009
queue_messages_1977058079	24th SEP, 2019
...	...

• 示例db<>fiddle