ISDATE() Date time function in SQL Server

What is ISDATE(Expression) ?

Returns 1 if the expression is a valid date, time, or datetime value; otherwise, 0.

Expression can be any character string , less than 4000 characters but it should not be Date datatype



























































Msg 8116, Level 16, State 1, Line 3
Argument data type date is invalid for argument 1 of isdate function.





How to dynamically create sheets in excel desitnation

How to create and map excel destination dynamically

In the earlier post we learned how to map excel destination directly in the SSIS in this post we lean to create excel sheets dynamically in a single excel file

we modify the package in the above post slightly to achieve our task here

How to create and map Excel destination dynamically in SSIS

In this post, you will learn

  1. How to create and map Excel destination dynamically in SSIS
  2. How burst the out put into multiple files using For loop container
  3. how to dynamically create sheet names

In this post we will use a OLEDB source and a Excel destination , for the OLEDB source we will use the Adventure works database [Production].[ProductListPriceHistory] table

This table has a history of price changes for each product, so our goal is to create a history Excel file for each product id














Create a variable type object to hold the distinct productID’s











Drag and drop a Data flow task add a oledb source with SQL query as data access mode and modify the query to get the distinct product ids and
Use a record set destination to load all the distinct product ids into the Object variable

drag and drop a For each loop enumerator and configure it as shown below

create a variable with string type and evaluate the variable as expression and open the expression editor modify the sheet create syntax to create the exact sheet name for the excel file, in our case we will use this ‘product_’+ productid

go back to the for loop drag and drop excel with connection type as excel and source input will be variable and select the sheet creation variable that we just created

Go back into the data flow task and edit the expression of excel connection manager and select the connection property as excel file path if you choose connection string then you have to use the full length connection string like this or go for the excel file as shown in the below picture
“Provider=Microsoft.Jet.OLEDB.4.0;Data Source=”+@excelfilename+”;Extended Properties=/”Excel 8.0;HDR=YES/”;”
you will get error like this
TITLE: Microsoft Visual Studio
——————————

Error at Exceldestination [Connection manager “Excel Connection Manager”]: The connection string format is not valid. It must consist of one or more components of the form X=Y, separated by semicolons. This error occurs when a connection string with zero components is set on database connection manager.

Error at Exceldestination: The result of the expression “@[User::Excelfilename]” on property “ConnectionString” cannot be written to the property. The expression was evaluated, but cannot be set on the property.

Error at Create and load Excel [Excel Destination [57]]: SSIS Error Code DTS_E_OLEDBERROR. An OLE DB error has occurred. Error code: 0x80040E37.

Error at Create and load Excel [Excel Destination [57]]: Opening a rowset for “productid_0” failed. Check that the object exists in the database.

——————————
ADDITIONAL INFORMATION:

Exception from HRESULT: 0xC02020E8 (Microsoft.SqlServer.DTSPipelineWrap)

——————————
BUTTONS:

OK
——————————


TITLE: Microsoft Visual Studio
——————————

Error at Create and load Excel [Excel Destination [57]]: SSIS Error Code DTS_E_OLEDBERROR.  An OLE DB error has occurred. Error code: 0x80040E37.

Error at Create and load Excel [Excel Destination [57]]: Opening a rowset for “productid_0” failed. Check that the object exists in the database.

——————————
ADDITIONAL INFORMATION:

Exception from HRESULT: 0xC02020E8 (Microsoft.SqlServer.DTSPipelineWrap)

——————————
BUTTONS:

OK
——————————
to fix this error create the excel file and the sheet during the design time

after clearing the errors, you can now go ahead and delete the excel file we created during the design time





























If you have any problems please use the comments section

Thank You

How to get the Time in HH:MM AM PM format IN SQL Server

How to get time in AM PM format in SQL Server

How to get time in 12 hour format in SQL Server






SELECT CONVERT(VARCHAR,GETDATE(),100) as ‘Default Date format’

SELECT RIGHT(‘0’+LTRIM(RIGHT(CONVERT(varchar,getDate(),100),8)),7) as ’12 Hour Time in AMPM’

SELECT REPLACE(REPLACE(RIGHT(‘0’+LTRIM(RIGHT(CONVERT(varchar,getdate(),100),7)),7),’AM’,’ AM’),’PM’,’ PM’)

as ’12 Hour Time in AM PM’

Len() and Datalength()

In this post we will go through two scalar functions

Len() is one of the string functions

Datalength is one of the Data type functions

so what does Len() do , it returns(int) the number of characters of the specified string expression, excluding trailing blanks.

excluding trailing blanks is an important note to remember when using Len() function

 

 

 

— It can also be used in select, where clause

Declare

@string varchar(100)

set @string =‘sqljunkieshare’

select LEN(@string)

 select * from dept

where LEN(dept_id)> 5

 

Datalength() is data type function (size of the data)

It returns the number of bytes used to represent any expression.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Now you have a clear idea of what does LEN() and DATALENTH()  scalar functions do

Set Operators : Except and Intersect -Tsql

SQL Server provides the following set operators. Set operators combine results from two or more queries into a single result set

1) Intersect and Except

2) Union

Today in this post we will learn Intersect and Except set operators

Returns distinct values by comparing the results of two queries.

EXCEPT returns any distinct values from the left query that are not also found on the right query.

INTERSECT returns any distinct values that are returned by both the query on the left and right sides of the INTERSECT operand.

The basic rules for combining the result sets of two queries that use EXCEPT or INTERSECT are the following:

  • The number and the order of the columns must be the same in all queries.
  • The data types must be compatible.

 

Lets take a simple example and you will better understand the set operators

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

create table #newproducts(ProductID int, name varchar(20), size varchar(20),price varchar(20))
insert into #newproducts(ProductID,name,size,price)

values(1,’productx’,’small’,20),
(2,’producty’,’small’,40),
(3,’productz’,’large’,50),
(1,’productxy’,’small’,60)
create table #oldproducts(ProductID int, name varchar(20), size varchar(20),price varchar(20))
insert into #oldproducts(ProductID,name,size,price)

values(4,’productq’,’small’,20),
(5,’productk’,’small’,40),
(6,’productz’,’large’,50),
(1,’productxy’,’small’,60),
(1,’productzy’,’small’,80)
select * from #newproducts

select * from #oldproducts
;with oldonly as
(
select * from #oldproducts

except

select * from #newproducts

),

newonly as (select * from #newproducts

except

select * from #oldproducts)
select o.ProductID,o.name as oldname, n.name as newname

from oldonly o inner join newonly n on o.ProductID = n.ProductID

where o.name <> n.name

System Functions – $partition

Returns the partition number into which a set of partitioning column values would be mapped for any specified partition function.

Syntax

[ database_name. ] $PARTITION.partition_function_name(expression)

It returns a Partition number of column value when mapped to a partition function

this will be useful if you want find the rows in a particular partition

so lets explain this with a simple example

 

create partition function

 

 

 

 

 

 

 

 

 

 

 

now lets create a partitioned table

 

 

 

 

 

insert some sample data

now lets see some examples on $partition function