我想要一个 sql 查询，它可以让我计算某个特定月份有多少次星期一、星期二……等等。谁能告诉我如何做到这一点？
问问题
2101 次
3 回答
1
（已编辑）
鉴于MySQL 日期函数和一些更简单的问题（一个月有多少天或查找月份天数），我已经提出了这个表达式：
ceil((day(last_day($dateInMonth)) - (7 + dayofweek(last_day($dateInMonth)) - $weekday) % 7) / 7)
其中 $dateInMonth 是请求月份中的日期（例如'2012-09-05'今天），$weekday 是 SQL 中的工作日编号（1 代表星期日，7 代表星期六）。
例如：这个月（2012 年 9 月）有 4 个星期五，但有 5 个星期六：
select ceil((day(last_day('2012-09-05')) - (7 + dayofweek(last_day('2012-09-05')) - 6) % 7) / 7);
select ceil((day(last_day('2012-09-05')) - (7 + dayofweek(last_day('2012-09-05')) - 7) % 7) / 7);
其他可能性：
- 调用一些外部代码（例如 Java，如果 DBMS 允许）
- 使用该预先计算的数据创建一个表（例如 DAYSPERMONTH）（如果月份可能在合理范围内）
于 2012-09-05T10:34:40.210 回答
0
检查sql方法。查找月份中的特定天数。
于 2012-09-05T10:29:45.730 回答
0
此功能可以永久使用，并具有多种用途。
您所要做的就是创建函数并运行正确的select语句。我在函数末尾提供了一个示例（取自本网站）。
只需将*database*顶部和底部的单词替换为您的数据库名称：
use *database*
SET ANSI_NULLS OFF
GO
SET QUOTED_IDENTIFIER ON
GO
create function [dbo].[F_TABLE_DATE]
(
@FIRST_DATE datetime,
@LAST_DATE datetime
)
/*
Function: dbo.F_TABLE_DATE
This function returns a date table containing all dates
from @FIRST_DATE through @LAST_DATE inclusive.
@FIRST_DATE must be less than or equal to @LAST_DATE.
The valid date range is 1754-01-01 through 9997-12-31.
If any input parameters are invalid, the function will produce
an error.
The table returned by F_TABLE_DATE contains a date and
columns with many calculated attributes of that date.
It is designed to make it convenient to get various commonly
needed date attributes without having to program and test
the same logic in many applications.
F_TABLE_DATE is primarily intended to load a permanant
date table, but it can be used directly by an application
when the date range needed falls outside the range loaded
in a permanant table.
If F_TABLE_DATE is used to load a permanant table, the create
table code can be copied from this function. For a permanent
date table, most columns should be indexed to produce the
best application performance.
Column Descriptions
------------------------------------------------------------------
DATE_ID
Unique ID = Days since 1753-01-01
DATE
Date at Midnight(00:00:00.000)
NEXT_DAY_DATE
Next day after DATE at Midnight(00:00:00.000)
Intended to be used in queries against columns
containing datetime values (1998-12-13 14:35:16)
that need to join to a DATE.
Example:
from
MyTable a
join
DATE b
on a.DateTimeCol >= b. DATE and
a.DateTimeCol < b.NEXT_DAY_DATE
YEAR
Year number in format YYYY, Example = 2005
YEAR_QUARTER
Year and Quarter number in format YYYYQ, Example = 20052
YEAR_MONTH
Year and Month number in format YYYYMM, Example = 200511
YEAR_DAY_OF_YEAR
Year and Day of Year number in format YYYYDDD, Example = 2005364
QUARTER
Quarter number in format Q, Example = 4
MONTH
Month number in format MM, Example = 11
DAY_OF_YEAR
Day of Year number in format DDD, Example = 362
DAY_OF_MONTH
Day of Month number in format DD, Example = 31
DAY_OF_WEEK
Day of week number, Sun=1, Mon=2, Tue=3, Wed=4, Thu=5, Fri=6, Sat=7
YEAR_NAME
Year name text in format YYYY, Example = 2005
YEAR_QUARTER_NAME
Year Quarter name text in format YYYY QQ, Example = 2005 Q3
YEAR_MONTH_NAME
Year Month name text in format YYYY MMM, Example = 2005 Mar
YEAR_MONTH_NAME_LONG
Year Month long name text in format YYYY MMMMMMMMM,
Example = 2005 September
QUARTER_NAME
Quarter name text in format QQ, Example = Q1
MONTH_NAME
Month name text in format MMM, Example = Mar
MONTH_NAME_LONG
Month long name text in format MMMMMMMMM, Example = September
WEEKDAY_NAME
Weekday name text in format DDD, Example = Tue
WEEKDAY_NAME_LONG
Weekday long name text in format DDDDDDDDD, Example = Wednesday
START_OF_YEAR_DATE
First Day of Year that DATE is in
END_OF_YEAR_DATE
Last Day of Year that DATE is in
START_OF_QUARTER_DATE
First Day of Quarter that DATE is in
END_OF_QUARTER_DATE
Last Day of Quarter that DATE is in
START_OF_MONTH_DATE
First Day of Month that DATE is in
END_OF_MONTH_DATE
Last Day of Month that DATE is in
*** Start and End of week columns allow selections by week
*** for any week start date needed.
START_OF_WEEK_STARTING_SUN_DATE
First Day of Week starting Sunday that DATE is in
END_OF_WEEK_STARTING_SUN_DATE
Last Day of Week starting Sunday that DATE is in
START_OF_WEEK_STARTING_MON_DATE
First Day of Week starting Monday that DATE is in
END_OF_WEEK_STARTING_MON_DATE
Last Day of Week starting Monday that DATE is in
START_OF_WEEK_STARTING_TUE_DATE
First Day of Week starting Tuesday that DATE is in
END_OF_WEEK_STARTING_TUE_DATE
Last Day of Week starting Tuesday that DATE is in
START_OF_WEEK_STARTING_WED_DATE
First Day of Week starting Wednesday that DATE is in
END_OF_WEEK_STARTING_WED_DATE
Last Day of Week starting Wednesday that DATE is in
START_OF_WEEK_STARTING_THU_DATE
First Day of Week starting Thursday that DATE is in
END_OF_WEEK_STARTING_THU_DATE
Last Day of Week starting Thursday that DATE is in
START_OF_WEEK_STARTING_FRI_DATE
First Day of Week starting Friday that DATE is in
END_OF_WEEK_STARTING_FRI_DATE
Last Day of Week starting Friday that DATE is in
START_OF_WEEK_STARTING_SAT_DATE
First Day of Week starting Saturday that DATE is in
END_OF_WEEK_STARTING_SAT_DATE
Last Day of Week starting Saturday that DATE is in
*** Sequence No columns are intended to allow easy offsets by
*** Quarter, Month, or Week for applications that need to look at
*** Last or Next Quarter, Month, or Week. Thay can also be used to
*** generate dynamic cross tab results by Quarter, Month, or Week.
QUARTER_SEQ_NO
Sequential Quarter number as offset from Quarter starting 1753/01/01
MONTH_SEQ_NO
Sequential Month number as offset from Month starting 1753/01/01
WEEK_STARTING_SUN_SEQ_NO
Sequential Week number as offset from Week starting Sunday, 1753/01/07
WEEK_STARTING_MON_SEQ_NO
Sequential Week number as offset from Week starting Monday, 1753/01/01
WEEK_STARTING_TUE_SEQ_NO
Sequential Week number as offset from Week starting Tuesday, 1753/01/02
WEEK_STARTING_WED_SEQ_NO
Sequential Week number as offset from Week starting Wednesday, 1753/01/03
WEEK_STARTING_THU_SEQ_NO
Sequential Week number as offset from Week starting Thursday, 1753/01/04
WEEK_STARTING_FRI_SEQ_NO
Sequential Week number as offset from Week starting Friday, 1753/01/05
WEEK_STARTING_SAT_SEQ_NO
Sequential Week number as offset from Week starting Saturday, 1753/01/06
JULIAN_DATE
Julian Date number as offset from noon on January 1, 4713 BCE
to noon on day of DATE in system of Joseph Scaliger
MODIFIED_JULIAN_DATE
Modified Julian Date number as offset from midnight(00:00:00.000) on
1858/11/17 to midnight(00:00:00.000) on day of DATE
ISO_DATE
ISO 8601 Date in format YYYY-MM-DD, Example = 2004-02-29
ISO_YEAR_WEEK_NO
ISO 8601 year and week in format YYYYWW, Example = 200403
ISO_WEEK_NO
ISO 8601 week of year in format WW, Example = 52
ISO_DAY_OF_WEEK
ISO 8601 Day of week number,
Mon=1, Tue=2, Wed=3, Thu=4, Fri=5, Sat=6, Sun=7
ISO_YEAR_WEEK_NAME
ISO 8601 year and week in format YYYY-WNN, Example = 2004-W52
ISO_YEAR_WEEK_DAY_OF_WEEK_NAME
ISO 8601 year, week, and day of week in format YYYY-WNN-D,
Example = 2004-W52-2
DATE_FORMAT_YYYY_MM_DD
Text date in format YYYY/MM/DD, Example = 2004/02/29
DATE_FORMAT_YYYY_M_D
Text date in format YYYY/M/D, Example = 2004/2/9
DATE_FORMAT_MM_DD_YYYY
Text date in format MM/DD/YYYY, Example = 06/05/2004
DATE_FORMAT_M_D_YYYY
Text date in format M/D/YYYY, Example = 6/5/2004
DATE_FORMAT_MMM_D_YYYY
Text date in format MMM D, YYYY, Example = Jan 4, 2006
DATE_FORMAT_MMMMMMMMM_D_YYYY
Text date in format MMMMMMMMM D, YYYY, Example = September 3, 2004
DATE_FORMAT_MM_DD_YY
Text date in format MM/DD/YY, Example = 06/05/97
DATE_FORMAT_M_D_YY
Text date in format M/D/YY, Example = 6/5/97
*/
returns @DATE table
(
[DATE_ID] [int] not null
primary key clustered,
[DATE] [datetime] not null ,
[NEXT_DAY_DATE] [datetime] not null ,
[YEAR] [smallint] not null ,
[YEAR_QUARTER] [int] not null ,
[YEAR_MONTH] [int] not null ,
[YEAR_DAY_OF_YEAR] [int] not null ,
[QUARTER] [tinyint] not null ,
[MONTH] [tinyint] not null ,
[DAY_OF_YEAR] [smallint] not null ,
[DAY_OF_MONTH] [smallint] not null ,
[DAY_OF_WEEK] [tinyint] not null ,
[YEAR_NAME] [varchar] (4) not null ,
[YEAR_QUARTER_NAME] [varchar] (7) not null ,
[YEAR_MONTH_NAME] [varchar] (8) not null ,
[YEAR_MONTH_NAME_LONG] [varchar] (14) not null ,
[QUARTER_NAME] [varchar] (2) not null ,
[MONTH_NAME] [varchar] (3) not null ,
[MONTH_NAME_LONG] [varchar] (9) not null ,
[WEEKDAY_NAME] [varchar] (3) not null ,
[WEEKDAY_NAME_LONG] [varchar] (9) not null ,
[START_OF_YEAR_DATE] [datetime] not null ,
[END_OF_YEAR_DATE] [datetime] not null ,
[START_OF_QUARTER_DATE] [datetime] not null ,
[END_OF_QUARTER_DATE] [datetime] not null ,
[START_OF_MONTH_DATE] [datetime] not null ,
[END_OF_MONTH_DATE] [datetime] not null ,
[START_OF_WEEK_STARTING_SUN_DATE] [datetime] not null ,
[END_OF_WEEK_STARTING_SUN_DATE] [datetime] not null ,
[START_OF_WEEK_STARTING_MON_DATE] [datetime] not null ,
[END_OF_WEEK_STARTING_MON_DATE] [datetime] not null ,
[START_OF_WEEK_STARTING_TUE_DATE] [datetime] not null ,
[END_OF_WEEK_STARTING_TUE_DATE] [datetime] not null ,
[START_OF_WEEK_STARTING_WED_DATE] [datetime] not null ,
[END_OF_WEEK_STARTING_WED_DATE] [datetime] not null ,
[START_OF_WEEK_STARTING_THU_DATE] [datetime] not null ,
[END_OF_WEEK_STARTING_THU_DATE] [datetime] not null ,
[START_OF_WEEK_STARTING_FRI_DATE] [datetime] not null ,
[END_OF_WEEK_STARTING_FRI_DATE] [datetime] not null ,
[START_OF_WEEK_STARTING_SAT_DATE] [datetime] not null ,
[END_OF_WEEK_STARTING_SAT_DATE] [datetime] not null ,
[QUARTER_SEQ_NO] [int] not null ,
[MONTH_SEQ_NO] [int] not null ,
[WEEK_STARTING_SUN_SEQ_NO] [int] not null ,
[WEEK_STARTING_MON_SEQ_NO] [int] not null ,
[WEEK_STARTING_TUE_SEQ_NO] [int] not null ,
[WEEK_STARTING_WED_SEQ_NO] [int] not null ,
[WEEK_STARTING_THU_SEQ_NO] [int] not null ,
[WEEK_STARTING_FRI_SEQ_NO] [int] not null ,
[WEEK_STARTING_SAT_SEQ_NO] [int] not null ,
[JULIAN_DATE] [int] not null ,
[MODIFIED_JULIAN_DATE] [int] not null ,
[ISO_DATE] [varchar](10) not null ,
[ISO_YEAR_WEEK_NO] [int] not null ,
[ISO_WEEK_NO] [smallint] not null ,
[ISO_DAY_OF_WEEK] [tinyint] not null ,
[ISO_YEAR_WEEK_NAME] [varchar](8) not null ,
[ISO_YEAR_WEEK_DAY_OF_WEEK_NAME] [varchar](10) not null ,
[DATE_FORMAT_YYYY_MM_DD] [varchar](10) not null ,
[DATE_FORMAT_YYYY_M_D] [varchar](10) not null ,
[DATE_FORMAT_MM_DD_YYYY] [varchar](10) not null ,
[DATE_FORMAT_M_D_YYYY] [varchar](10) not null ,
[DATE_FORMAT_MMM_D_YYYY] [varchar](12) not null ,
[DATE_FORMAT_MMMMMMMMM_D_YYYY] [varchar](18) not null ,
[DATE_FORMAT_MM_DD_YY] [varchar](8) not null ,
[DATE_FORMAT_M_D_YY] [varchar](8) not null
)
as
begin
declare @cr varchar(2)
select @cr = char(13)+Char(10)
declare @ErrorMessage varchar(400)
declare @START_DATE datetime
declare @END_DATE datetime
declare @LOW_DATE datetime
declare @start_no int
declare @end_no int
-- Verify @FIRST_DATE is not null
if @FIRST_DATE is null
begin
select @ErrorMessage =
'@FIRST_DATE cannot be null'
goto Error_Exit
end
-- Verify @LAST_DATE is not null
if @LAST_DATE is null
begin
select @ErrorMessage =
'@LAST_DATE cannot be null'
goto Error_Exit
end
-- Verify @FIRST_DATE is not before 1754-01-01
IF @FIRST_DATE < '17540101' begin
select @ErrorMessage =
'@FIRST_DATE cannot before 1754-01-01'+
', @FIRST_DATE = '+
isnull(convert(varchar(40),@FIRST_DATE,121),'NULL')
goto Error_Exit
end
-- Verify @LAST_DATE is not after 9997-12-31
IF @LAST_DATE > '99971231' begin
select @ErrorMessage =
'@LAST_DATE cannot be after 9997-12-31'+
', @LAST_DATE = '+
isnull(convert(varchar(40),@LAST_DATE,121),'NULL')
goto Error_Exit
end
-- Verify @FIRST_DATE is not after @LAST_DATE
if @FIRST_DATE > @LAST_DATE
begin
select @ErrorMessage =
'@FIRST_DATE cannot be after @LAST_DATE'+
', @FIRST_DATE = '+
isnull(convert(varchar(40),@FIRST_DATE,121),'NULL')+
', @LAST_DATE = '+
isnull(convert(varchar(40),@LAST_DATE,121),'NULL')
goto Error_Exit
end
-- Set @START_DATE = @FIRST_DATE at midnight
select @START_DATE = dateadd(dd,datediff(dd,0,@FIRST_DATE),0)
-- Set @END_DATE = @LAST_DATE at midnight
select @END_DATE = dateadd(dd,datediff(dd,0,@LAST_DATE),0)
-- Set @LOW_DATE = earliest possible SQL Server datetime
select @LOW_DATE = convert(datetime,'17530101')
-- Find the number of day from 1753-01-01 to @START_DATE and @END_DATE
select @start_no = datediff(dd,@LOW_DATE,@START_DATE) ,
@end_no = datediff(dd,@LOW_DATE,@END_DATE)
-- Declare number tables
declare @num1 table (NUMBER int not null primary key clustered)
declare @num2 table (NUMBER int not null primary key clustered)
declare @num3 table (NUMBER int not null primary key clustered)
-- Declare table of ISO Week ranges
declare @ISO_WEEK table
(
[ISO_WEEK_YEAR] int not null
primary key clustered,
[ISO_WEEK_YEAR_START_DATE] datetime not null,
[ISO_WEEK_YEAR_END_DATE] Datetime not null
)
-- Find rows needed in number tables
declare @rows_needed int
declare @rows_needed_root int
select @rows_needed = @end_no - @start_no + 1
select @rows_needed =
case
when @rows_needed < 10
then 10
else @rows_needed
end
select @rows_needed_root = convert(int,ceiling(sqrt(@rows_needed)))
-- Load number 0 to 16
insert into @num1 (NUMBER)
select NUMBER = 0 union all select 1 union all select 2 union all
select 3 union all select 4 union all select 5 union all
select 6 union all select 7 union all select 8 union all
select 9 union all select 10 union all select 11 union all
select 12 union all select 13 union all select 14 union all
select 15
order by
1
-- Load table with numbers zero thru square root of the number of rows needed +1
insert into @num2 (NUMBER)
select
NUMBER = a.NUMBER+(16*b.NUMBER)+(256*c.NUMBER)
from
@num1 a cross join @num1 b cross join @num1 c
where
a.NUMBER+(16*b.NUMBER)+(256*c.NUMBER) <
@rows_needed_root
order by
1
-- Load table with the number of rows needed for the date range
insert into @num3 (NUMBER)
select
NUMBER = a.NUMBER+(@rows_needed_root*b.NUMBER)
from
@num2 a
cross join
@num2 b
where
a.NUMBER+(@rows_needed_root*b.NUMBER) < @rows_needed
order by
1
declare @iso_start_year int
declare @iso_end_year int
select @iso_start_year = datepart(year,dateadd(year,-1,@start_date))
select @iso_end_year = datepart(year,dateadd(year,1,@end_date))
-- Load table with start and end dates for ISO week years
insert into @ISO_WEEK
(
[ISO_WEEK_YEAR],
[ISO_WEEK_YEAR_START_DATE],
[ISO_WEEK_YEAR_END_DATE]
)
select
[ISO_WEEK_YEAR] = a.NUMBER,
[0ISO_WEEK_YEAR_START_DATE] =
dateadd(dd,(datediff(dd,@LOW_DATE,
dateadd(day,3,dateadd(year,a.[NUMBER]-1900,0))
)/7)*7,@LOW_DATE),
[ISO_WEEK_YEAR_END_DATE] =
dateadd(dd,-1,dateadd(dd,(datediff(dd,@LOW_DATE,
dateadd(day,3,dateadd(year,a.[NUMBER]+1-1900,0))
)/7)*7,@LOW_DATE))
from
(
select
NUMBER = NUMBER+@iso_start_year
from
@num3
where
NUMBER+@iso_start_year <= @iso_end_year
) a
order by
a.NUMBER
-- Load Date table
insert into @DATE
select
[DATE_ID] = a.[DATE_ID] ,
[DATE] = a.[DATE] ,
[NEXT_DAY_DATE] =
dateadd(day,1,a.[DATE]) ,
[YEAR] =
datepart(year,a.[DATE]) ,
[YEAR_QUARTER] =
(10*datepart(year,a.[DATE]))+datepart(quarter,a.[DATE]) ,
[YEAR_MONTH] =
(100*datepart(year,a.[DATE]))+datepart(month,a.[DATE]) ,
[YEAR_DAY_OF_YEAR] =
(1000*datepart(year,a.[DATE]))+
datediff(dd,dateadd(yy,datediff(yy,0,a.[DATE]),0),a.[DATE])+1 ,
[QUARTER] =
datepart(quarter,a.[DATE]) ,
[MONTH] =
datepart(month,a.[DATE]) ,
[DAY_OF_YEAR] =
datediff(dd,dateadd(yy,datediff(yy,0,a.[DATE]),0),a.[DATE])+1 ,
[DAY_OF_MONTH] =
datepart(day,a.[DATE]) ,
[DAY_OF_WEEK] =
-- Sunday = 1, Monday = 2, ,,,Saturday = 7
(datediff(dd,'17530107',a.[DATE])%7)+1 ,
[YEAR_NAME] =
datename(year,a.[DATE]) ,
[YEAR_QUARTER_NAME] =
datename(year,a.[DATE])+' Q'+datename(quarter,a.[DATE]) ,
[YEAR_MONTH_NAME] =
datename(year,a.[DATE])+' '+left(datename(month,a.[DATE]),3) ,
[YEAR_MONTH_NAME_LONG] =
datename(year,a.[DATE])+' '+datename(month,a.[DATE]) ,
[QUARTER_NAME] =
'Q'+datename(quarter,a.[DATE]) ,
[MONTH_NAME] =
left(datename(month,a.[DATE]),3) ,
[MONTH_NAME_LONG] =
datename(month,a.[DATE]) ,
[WEEKDAY_NAME] =
left(datename(weekday,a.[DATE]),3) ,
[WEEKDAY_NAME_LONG] =
datename(weekday,a.[DATE]),
[START_OF_YEAR_DATE] =
dateadd(year,datediff(year,0,a.[DATE]),0) ,
[END_OF_YEAR_DATE] =
dateadd(day,-1,dateadd(year,datediff(year,0,a.[DATE])+1,0)) ,
[START_OF_QUARTER_DATE] =
dateadd(quarter,datediff(quarter,0,a.[DATE]),0) ,
[END_OF_QUARTER_DATE] =
dateadd(day,-1,dateadd(quarter,datediff(quarter,0,a.[DATE])+1,0)) ,
[START_OF_MONTH_DATE] =
dateadd(month,datediff(month,0,a.[DATE]),0) ,
[END_OF_MONTH_DATE] =
dateadd(day,-1,dateadd(month,datediff(month,0,a.[DATE])+1,0)),
[START_OF_WEEK_STARTING_SUN_DATE] =
dateadd(dd,(datediff(dd,'17530107',a.[DATE])/7)*7,'17530107'),
[END_OF_WEEK_STARTING_SUN_DATE] =
dateadd(dd,((datediff(dd,'17530107',a.[DATE])/7)*7)+6,'17530107'),
[START_OF_WEEK_STARTING_MON_DATE] =
dateadd(dd,(datediff(dd,'17530101',a.[DATE])/7)*7,'17530101'),
[END_OF_WEEK_STARTING_MON_DATE] =
dateadd(dd,((datediff(dd,'17530101',a.[DATE])/7)*7)+6,'17530101'),
[START_OF_WEEK_STARTING_TUE_DATE] =
dateadd(dd,(datediff(dd,'17530102',a.[DATE])/7)*7,'17530102'),
[END_OF_WEEK_STARTING_TUE_DATE] =
dateadd(dd,((datediff(dd,'17530102',a.[DATE])/7)*7)+6,'17530102'),
[START_OF_WEEK_STARTING_WED_DATE] =
dateadd(dd,(datediff(dd,'17530103',a.[DATE])/7)*7,'17530103'),
[END_OF_WEEK_STARTING_WED_DATE] =
dateadd(dd,((datediff(dd,'17530103',a.[DATE])/7)*7)+6,'17530103'),
[START_OF_WEEK_STARTING_THU_DATE] =
dateadd(dd,(datediff(dd,'17530104',a.[DATE])/7)*7,'17530104'),
[END_OF_WEEK_STARTING_THU_DATE] =
dateadd(dd,((datediff(dd,'17530104',a.[DATE])/7)*7)+6,'17530104'),
[START_OF_WEEK_STARTING_FRI_DATE] =
dateadd(dd,(datediff(dd,'17530105',a.[DATE])/7)*7,'17530105'),
[END_OF_WEEK_STARTING_FRI_DATE] =
dateadd(dd,((datediff(dd,'17530105',a.[DATE])/7)*7)+6,'17530105'),
[START_OF_WEEK_STARTING_SAT_DATE] =
dateadd(dd,(datediff(dd,'17530106',a.[DATE])/7)*7,'17530106'),
[END_OF_WEEK_STARTING_SAT_DATE] =
dateadd(dd,((datediff(dd,'17530106',a.[DATE])/7)*7)+6,'17530106'),
[QUARTER_SEQ_NO] =
datediff(quarter,@LOW_DATE,a.[DATE]),
[MONTH_SEQ_NO] =
datediff(month,@LOW_DATE,a.[DATE]),
[WEEK_STARTING_SUN_SEQ_NO] =
datediff(day,'17530107',a.[DATE])/7,
[WEEK_STARTING_MON_SEQ_NO] =
datediff(day,'17530101',a.[DATE])/7,
[WEEK_STARTING_TUE_SEQ_NO] =
datediff(day,'17530102',a.[DATE])/7,
[WEEK_STARTING_WED_SEQ_NO] =
datediff(day,'17530103',a.[DATE])/7,
[WEEK_STARTING_THU_SEQ_NO] =
datediff(day,'17530104',a.[DATE])/7,
[WEEK_STARTING_FRI_SEQ_NO] =
datediff(day,'17530105',a.[DATE])/7,
[WEEK_STARTING_SAT_SEQ_NO] =
datediff(day,'17530106',a.[DATE])/7,
[JULIAN_DATE] =
datediff(day,@LOW_DATE,a.[DATE])+2361331,
[MODIFIED_JULIAN_DATE] =
datediff(day,'18581117',a.[DATE]),
--/*
[ISO_DATE] =
replace(convert(char(10),a.[DATE],111),'/','-') ,
[ISO_YEAR_WEEK_NO] =
(100*b.[ISO_WEEK_YEAR])+
(datediff(dd,b.[ISO_WEEK_YEAR_START_DATE],a.[DATE])/7)+1 ,
[ISO_WEEK_NO] =
(datediff(dd,b.[ISO_WEEK_YEAR_START_DATE],a.[DATE])/7)+1 ,
[ISO_DAY_OF_WEEK] =
-- Sunday = 1, Monday = 2, ,,,Saturday = 7
(datediff(dd,@LOW_DATE,a.[DATE])%7)+1 ,
[ISO_YEAR_WEEK_NAME] =
convert(varchar(4),b.[ISO_WEEK_YEAR])+'-W'+
right('00'+convert(varchar(2),(datediff(dd,b.[ISO_WEEK_YEAR_START_DATE],a.[DATE])/7)+1),2) ,
[ISO_YEAR_WEEK_DAY_OF_WEEK_NAME] =
convert(varchar(4),b.[ISO_WEEK_YEAR])+'-W'+
right('00'+convert(varchar(2),(datediff(dd,b.[ISO_WEEK_YEAR_START_DATE],a.[DATE])/7)+1),2) +
'-'+convert(varchar(1),(datediff(dd,@LOW_DATE,a.[DATE])%7)+1) ,
--*/
[DATE_FORMAT_YYYY_MM_DD] =
convert(char(10),a.[DATE],111) ,
[DATE_FORMAT_YYYY_M_D] =
convert(varchar(10),
convert(varchar(4),year(a.[DATE]))+'/'+
convert(varchar(2),day(a.[DATE]))+'/'+
convert(varchar(2),month(a.[DATE]))),
[DATE_FORMAT_MM_DD_YYYY] =
convert(char(10),a.[DATE],101) ,
[DATE_FORMAT_M_D_YYYY] =
convert(varchar(10),
convert(varchar(2),month(a.[DATE]))+'/'+
convert(varchar(2),day(a.[DATE]))+'/'+
convert(varchar(4),year(a.[DATE]))),
[DATE_FORMAT_MMM_D_YYYY] =
convert(varchar(12),
left(datename(month,a.[DATE]),3)+' '+
convert(varchar(2),day(a.[DATE]))+', '+
convert(varchar(4),year(a.[DATE]))),
[DATE_FORMAT_MMMMMMMMM_D_YYYY] =
convert(varchar(18),
datename(month,a.[DATE])+' '+
convert(varchar(2),day(a.[DATE]))+', '+
convert(varchar(4),year(a.[DATE]))),
[DATE_FORMAT_MM_DD_YY] =
convert(char(8),a.[DATE],1) ,
[DATE_FORMAT_M_D_YY] =
convert(varchar(8),
convert(varchar(2),month(a.[DATE]))+'/'+
convert(varchar(2),day(a.[DATE]))+'/'+
right(convert(varchar(4),year(a.[DATE])),2))
from
(
-- Derived table is all dates needed for date range
select top 100 percent
[DATE_ID] = aa.[NUMBER],
[DATE] =
dateadd(dd,aa.[NUMBER],@LOW_DATE)
from
(
select
NUMBER = NUMBER+@start_no
from
@num3
where
NUMBER+@start_no <= @end_no
) aa
order by
aa.[NUMBER]
) a
join
-- Match each date to the proper ISO week year
@ISO_WEEK b
on a.[DATE] between
b.[ISO_WEEK_YEAR_START_DATE] and
b.[ISO_WEEK_YEAR_END_DATE]
order by
a.[DATE_ID]
return
Error_Exit:
-- Return a pesudo error message by trying to
-- convert an error message string to an int.
-- This method is used because the error displays
-- the string it was trying to convert, and so the
-- calling application sees a formatted error message.
declare @error int
set @error = convert(int,@cr+@cr+
'*******************************************************************'+@cr+
'* Error in function F_TABLE_DATE:'+@cr+'* '+
isnull(@ErrorMessage,'Unknown Error')+@cr+
'*******************************************************************'+@cr+@cr)
return
end
GO
select YEAR_MONTH_NAME_LONG, WEEKDAY_NAME,COUNT(WEEKDAY_NAME)cnt
from database.dbo.F_TABLE_DATE('2012-01-01',GETDATE())
group by YEAR_MONTH_NAME_LONG, WEEKDAY_NAME
order by YEAR_MONTH_NAME_LONG
于 2012-09-05T12:42:26.880 回答