If Convert To Datetime In Where Clause / Will Index Still Be Used

Apr 15, 2015

I have an index on a date field but, the datatype is nvarchar. If I convert to datetime in my where clause, will the index still be used? For example

select MRN, Name, AppointmentDate
from DATA
where convert(datetime, AppointmentDate, 121) between '2015-04-01' and '2015-04-30'

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Convert Datetime String To Datetime Date Type

Mar 11, 2014

I am inserting date and time data into a SQL Server 2012 Express table from an application. The application is providing the date and time as a string data type. Is there a TSQL way to convert the date and time string to an SQL datetime date type? I want to do the conversion, because SQL displays an error due to the

My date and time string from the application looks like : 3/11/2014 12:57:57 PM

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Jul 20, 2005

Hi,I have a text file that contains a date column. The text file will beimported to database in SQL 2000 server. After to be imported, I wantto convert the date column to date type.For ex. the text file look likeName dateSmith 20003112Jennifer 19991506It would be converted date column to ydm database in SQL 2000 server.In the table it should look like thisName DateSmith 2000.31.12Jennifer 1999.15.06Thanks in advance- Loi -

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Nov 5, 2007

Hi,

I am trying to access a date column up to millisecond precession. So I cast date to as follows:



Code BlockCONVERT(varchar(23),CREATE_DATE,121)


I get millisecond part as a result of query but it€™s €œ000€?.

When I try to test the format by using getDate instead of DateTime column I get right milliseconds.





CONVERT(varchar(23),GetDate(),121) --Gives right milliseconds in return

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Sep 11, 2007

hi,
How do i convert a varchar field into the datetime data type? the reason i need this lies in the requirement that in the earlier data base the column that is hlding the date value is having the data type as varchar. and in the new design the column data type is datetime. i am using sql scripts for the data migration from the older design to the newer and got stuck with this datetime convertion issue. do let me know the best possible solution.

following are the sample data that is theer in the older table for the date.


12/12/2003
1/13/2007
01132004
1-1-2004
1.2.2001



there is no uniformity of the data that is stored currently.



thnkx in adv.
rahul jha

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Oct 26, 1998

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Example: "SELECT products.ordernum, cart.cartnum FROM products,cart Where CONVERT(CHAR(10),cartID) = `variable`.

The cartID is an integer and the `variable` has been converted through the QueryString?

I would appreciate some help.

Duane

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May 28, 2008

I have a SQL query where am using WHERE clause as a result of which the NULL values are getting filtered...can u please help me to tranform this query into LEFT OUTER JOINS so as to avoid this filtration....my query is


SELECT A.JOINT_ID,A.SIZE_NBMM,A.ISFIELDJOINT,A.WELDTEST_CRI_ID,C.LINE_ID,D.TESTLEVELNO,E.COMPLETE FROM EALPS_DRWREVSPLJTS

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Thanks and Regards,
parama.

parama laha

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Jul 15, 2007

Hello,

first of all, some facts of the case:



Table Master Table Dimension
ID Code Price ID Name
1 A44333 5000 1 "Scanner"
2 D442 3000 2 "Notebook"
3 D6644 4000 3 "Banana"


I join both tables on ID and search one time for ID and another time for Name. Looks like

(a)
SELECT AVG(Price) From Master JOIN Dimension ON Master.id = Dimension.id
WHERE master.id=1
AND Code like 'A44'
(b)
SELECT AVG(Price) From Master JOIN Dimension ON Master.id = Dimension.id
WHERE Name = 'Scanner'
AND Code like 'A44'


Why does query (b) take longer than query (a)? Dimension has 12 Rows and
Master has about 24M Rows.

For index I did
Create Index IX_Master_ID on Master(ID)
Create Index IX_Master_Code on Master(Code)
Create Index IX_Dimension_ID on Dimension(ID)
Create Index IX_Dimension_Name on Dimension(Name)

I noticed, that when i leave the Code like 'A44' clause, query (a) and (b) do take same time. I'm really confused. Can someone please help me out?

Thank you

Silas

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Oct 15, 1998

I would like to do something like this, but it does not work.

Select * from PS_AUDIT_EMPLYMNT
WHERE AUDIT_STAMP LIKE `Oct 15 1998%`

*Note AUDIT_STAMP is a Datetime field

Does anyone have any ideas why this will not work?

Thanks,

Rodney

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Dec 26, 2006

I have a date filed 12/26/2006 and a time field 7:00am. How can I combine them in my select statement and get a DateTime field.

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Mar 29, 2004

Hello All,

In following statement in SQL, I'm first converting 'IssueDate' with style 101 into 'nvarchar' then converting to Datatime.

convert(datetime,convert (nvarchar,Cert_WarehouseDetails.IssuedDateX,101)) <= '3/29/2004')


Which is right in below one.

1. Do I need to first convert into nvarchar then datetime.
e.g. convert(datetime,convert (nvarchar,Cert_WarehouseDetails.IssuedDateX,101)) <= '3/29/2004')


2. Otherwise can I directly convert into datetime.

convert(datetime,Cert_WarehouseDetails.IssuedDateX ,101) <= '3/29/2004')


Please reply to me asap.


Regards,
M. G.

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Apr 7, 2008

Hi,
Is there a way to convert the date time column to MM/DD/YY HH:MM AM/PM format.
I tried
Select Convert(varchar , Getdate(),100). But this is not in MM-DD-YY format..

Thanks in advance..

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Jul 11, 2006

Hi all..its kinda hard for me hw to figure out this, hopefully any of u guys can help me out with this super simple problem..

here is my query..
select convert(char(50),dateadd(day,-7,getdate()),105)
its because i want it to look last week data. BUT i get the format like this '03-07-2006'

what i want is it to be like this '20060703' how do i do that?

Thanks,
Jack

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Aug 29, 2007

I'm having trouble converting a date of birth field, datatype int from yyyymmdd to mmddyyyy.

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what am I missing?

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Dec 14, 2007

I have a table with an int field that I'm trying to
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Sample Data:
19720518
19720523
19720523
19720601
19720603
19720609

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Mar 26, 2008

What is the equivalent for INCLUDE clause (in Create index syntax) in SQL Server 2000.
SQL Server 2005 will support Include clause in Create index syntax . How to attain it in SQL Server 2000

Example : I have below query executable in SQL Server 2005

CREATE INDEX Index_Name ON mytable(col1 ASC) INCLUDE (name,id);

What is the equivalent for the above query in SQL server 2000

Thanks ,
Sushma

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Nov 16, 2007

I have the following table:

Create Table Item(
I_Code NVarChar(40) Primary Key NOT NULL,
I_MatID NVarChar(40),
I_Name NVarChar(160),
I_BC nvarchar(20),
I_Company nvarchar(20),
I_CompanyFound nvarchar(20),
I_Info1 nvarchar(55),
I_Acquired nvarchar(35),
I_Info2 nvarchar(55),
I_Info3 nvarchar(55),
I_Date DateTime DEFAULT GetDate()

);

Create Index ind_Item_Name on Item(I_Name);
Create Index ind_Item_BC on Item(I_BC);
Create Index ind_Item_Company on Item(I_Company);
Create Index ind_Item_CompanyFound on Item(I_CompanyFound);
create Index ind_Item_i1 on Item(I_Company,I_CompanyFound);
create Index ind_Item_i2 on Item(I_CompanyFound,I_Company);

Now this query DOES NOT use index:
select I_Name, I_Code, I_MatID, I_BC, I_Company,I_Info1, I_Acquired, I_CompanyFound, 0 as I_Found
from Item
where (I_Company='102' or I_CompanyFound='102' )


While this one use:

select I_Name, I_Code, I_MatID, I_BC, I_Company,I_Info1, I_Acquired, I_CompanyFound, 0 as I_Found
from Item
where (I_Company='102' )
UNION
select I_Name, I_Code, I_MatID, I_BC, I_Company,I_Info1, I_Acquired, I_CompanyFound, 0 as I_Found
from Item
where (I_CompanyFound='102' )


Both return the same rows. Is this a bug? I found the following:
http://support.microsoft.com/kb/223423

Some feedback?
Thanks

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Jul 20, 2005

I'm trying to concatenate fields in SQL stored proc for use in textfield in asp.net dropdownlist. I'm running into a problem when I tryto use a DateTime field, but can't find the answer (so far) on theInternet. Was hoping someone here would know?My sql stored proc:SELECT AnomalyID, DateEntered + ', ' + Station + ', ' + Problem As'SelectInfo'FROM tblAnomalyWHERE WorkOrder=@varWO AND Signoff=NullORDER BY DateEnteredbut I get the error:The conversion of a char data type to a datetime data type resulted inan out-of-range datetime value.I'm not the brightest bulb on the block, so any clues greatlyappreciated!Thanks, Kathy

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May 9, 2007

I have SQL table with dateTime field which is INT type (This field contains a number representing DATE / TIME)
I would like to convert this umber to actuall date time output. However, SQL gives invalid date times. See below) 
Appears the resulting date time are all the same.
                    SQL COMMAND
                                Select TimeStamp, cast(convert(TimeStamp,103) As datetime) from winsData2
                    OUTPUT
                                 TimeStamp    Converted TimeStamp
                                 2147483647 1900-01-01 00:00:00.343                                 2147483647 1900-01-01 00:00:00.343                                 1178694066 1900-01-01 00:00:00.343                                 2147483647 1900-01-01 00:00:00.343                                 1178688211 1900-01-01 00:00:00.343                                 1178828143 1900-01-01 00:00:00.343                                  2147483647 1900-01-01 00:00:00.343
Any assitance appreciated.
 

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Apr 20, 2005

Hi:
I have a column call Date_Sent (28/02/2004)(dd/mm/yyyy) format as varchar at beginning. I want to convert to other column as datetime. 
I use Query like:
SELECT
CAST(SUBSTRING(Date_Sent,1,2)as int) + '/' +CAST(SUBSTRING(date_sent,4,2) as int) + '/' +CAST(SUBSTRING(DATE_SENT,7,4) as int)
From MyTable
It is not working, anybody can give me some advise!
thanks!
 
 

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Dec 28, 2005

When I configure my SQL server datasource, what SQL statement can I use to convert a source field in a legacy DB2 database in 'mmddyy' format to a datetime field so that I can query by date on this field?

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Jan 2, 2006

hi , i have a problem
i have an textarea that i want to convert to DateTime format (dd/MM/yyyy) .
the data in the textarea is (dd/MM/yyyy for example 21/12/2005).
i need it to add this data in sql server , in smalldatetime formation colum .
plz help.
 
 

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Oct 9, 2003

Hi,
How I can convert text '07012003' into datetime ?.
If I am using below format and getting the error 'the conversion of char data type to smalldatetime data type resulted in an out-of-range smalldatetime value'


select convert(smalldatetime,'07012003')

Any advice please?.
Thanks,
Ravi

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Mar 28, 2004

Hi,
I have DB2 date value 00000000. If I'm exporting to SQL server using openquery that is automaticaly converting to char of 8 and stored as the same value 00000000.
My question is how I can convert them as datetime value in SQL server 2000.?

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Nov 14, 2006

I have a query that determines a product's date of manufacture from the serial number. The day is formatted as a day number (e.g. "107" = April 17) and the year as a two-digit year. All dates can be assumed to be 21st century.

I need to take this data, which is in two separate fields in varchar format, and represent it as a date in mm/dd/yyyy format. So for example, if the field values are "107" and "06" I need to display "04/17/2006."

Thanks in advance for the correct formula!

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Jul 3, 2001

Have a requirement to:

Convert char(7) YYYY-MM variable (eg. '2001-07') to both:
datetime '2001-07-01 00:00:00.000' and
datetime '2001-07-01 23:59:59.997'

thx in advance!

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Jan 28, 2008

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I've been working for hours today on this, but haven't been able to come up with a solution.

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Dec 9, 2005

I have a stored procedure that takes a @INPUT_DATE Varchar(25) as an input parameter. It passes this @Date to a User Defined function that checks if @Date is a valid date and then returns either the date or a "1" for not a valid date. If it is not a valid date, I use the RAISERROR and stop the insert call.

Here is the parts from the Stored Procedure


Code:

--Input Parameter
@INPUT_DATEvarchar(25) = NULL,

--Send the Parameter to the User Defined Function
DECLARE @Error AS INT
DECLARE @ErrorMessage AS VARCHAR(200)


--Check to make sure a all dates are entered correctly
SET @INPUT_DATE = dbo.Function_Check_Date(@INPUT_DATE)

IF (@INPUT_DATE = '1')
BEGIN
SET @Error = 1
SET @ErrorMessage = '-Date formatted wrong'
RAISERROR(@ErrorMessage, 15, 1)
END
-------------------------------------------------------

IF @Error <> 1
BEGIN
INSERT INTO Table1(DateColumn)
VALUES (CONVERT(DATETIME, @INPUT_DATE))



And here is my User Defined Function


Code:

CREATE FUNCTION [dbo].[Function_Check_Date]
(
@Temp VarChar(25)
)
RETURNS VARCHAR

AS

BEGIN
DECLARE @Date VarChar(25)

IF (ISDATE(@Temp) = 0) AND (@Temp <> 'N/A') AND (@Temp <> '')
BEGIN
SET @Date = '1'
END
ELSE IF (@Temp = 'N/A') OR (@Temp = '') --For not availables or Blanks
BEGIN
SET @Date = CONVERT(DATETIME, '1/1/1900')
END

ELSE
BEGIN
SET @Date = CONVERT(DATETIME, @Temp)
END

RETURN @Date

END






The error is occuring when I try to convert the @INPUT_DATE to a datetime in the insert statement. The field value for the DateColumn in the database is a DateTime format. The error I receive is Error Converting datetime from character string. But when I test all these items in Query Analyzer, I am able to do each step without error?

Thanks for any advice, as I am rather confused.

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Jan 19, 2006

Hi,

If the datetime value is '20.01.2006', what will be the style in CONVERT function ?

Eg : select convert(datetime, '20.01.2006') gives datetime out-of-range error.

There is no style provided for dd.mm.yyyy in SQL Server documentation. Is there any way to do such conversion with this constant value of format dd.mm.yyyy ?

Please advice,

Thanks,
MiraJ

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Feb 16, 2006

HI! :shocked:

I tried to convert 0x01C3F0F5012D36E0, binary(8) to datetime
But
How can I do that?

thanks for all

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May 1, 2008

declare @dt varchar(20)
select count(s.sopnumbe) as orders from sop30300 s
left outer join sop30200 ss
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where s.itemnmbr=ss.sku and s.soptype = 2 and ss.docdate=@dt

well docdate is datetime and dt is varchar
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Nov 24, 2006

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Apr 24, 2007

I want to merge data from two different tables that have the same column names but different datatypes.

Table one has a varchar field pubdate_full that includes a date formatted as text like this: '2005-04-15'.

Table two has a smalldatetime field called Hard_NYP and a varchar pubdate field that includes just the year (eg '2007').

I want to Select data in table two and return a pubdate_full field that has either the datepub or the Hard_due. If the Hard_due is not null or '1/1/1900 12:00:00 AM' then I want to fill pubdate_full with that value, otherwise fill it with the pubdate value.

This works in that regard:

SELECT Hard_due, datepub
CASE WHEN (Hard_due <> '1/1/1900 12:00:00 AM') AND
(Hard_due IS NOT NULL) THEN Hard_Due ELSE datepub END AS pubdate_full from inventory

The question is, how do I convert pubdate_full on the fly to be the same format and datatype as the Table one pubdate_full or vice versa in order to be able to merge the two tables?

Many thanks in advance.

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