Tech Treasure

JQuery selector tutorial

chiragrdarji — Thu, 11 Nov 2010 19:16:50 +0000

Today I read another god article about JQuery selector tutorial. Here is a link for that. Two great articles about JQuery in one day, amazing !!!

Happy Programming !!!

Chirag Darji
ASP.NET Consultant & Trainer

JQuery Selector, JQuery Event Binding, JQuery “this” keyword

chiragrdarji — Thu, 11 Nov 2010 18:50:22 +0000

Today while reading about JQuery I came across really helpful and well narrated article about JQuery Selector, JQuery Event Binding and use this key word in JQuery by Elijah Manor. You can read it here.

Happy programming !!!

Chirag Darji
ASP.NET Consultant

Find Second Saturday and Fourth Saturday of Month

chiragrdarji — Mon, 23 Aug 2010 10:11:17 +0000

While analyzing Payroll management system, I came across an interesting question that how can we find second and fourth Saturday of every month. As in India we still do not have five days a week in most of organization, bad humm……:( . Most of organizations offer only second and fourth Saturday off. Below is the code to find particular day of week and its occurrence in given month and year,

/// /// Returns date for specific week day and its occurrence in month./// /// Perticular day of week, System.DayOfWeek/// Its occurrence, System.Int32/// Month, System.Int32/// Year, System.Int32/// private int GetDateForWeekDay(DayOfWeek DesiredDay, int Occurrence,int Month,int Year){        DateTime dtSat = new DateTime(Year, Month , 1);    int j = 0;    if (Convert.ToInt32(DesiredDay) - Convert.ToInt32(dtSat.DayOfWeek) >= 0)        j = Convert.ToInt32(DesiredDay) - Convert.ToInt32(dtSat.DayOfWeek) + 1;    else        j = (7 - Convert.ToInt32(dtSat.DayOfWeek)) + (Convert.ToInt32(DesiredDay) + 1);     return j + (Occurrence - 1) * 7;     }

Fig – (1) Code to find Second Saturday and Fourth Saturday of Month.

Happy Programming !!!!

Chirag Darji

ASP.NET Consultant & Trainer

Complete Installation guide for CRM 4.0 / Step by Step guide to install CRM 4.0

chiragrdarji — Fri, 06 Aug 2010 18:39:04 +0000

Last week I installed Microsoft Dynamic 4.0 on my virtual machine and I found that it will be helpful for beginner like me, if there is a step by step installation guide. Lets start with OS selection.

1. You can use Windows Server 2003 or later server version. I had Windows Server 2003 R2.

2. Install latest service pack for OS you installed.

3. Install Internet Information Service.

4. Install Active Directory.

5. Configure DNS Server.

6. Create new user for domain and make him member of Administrators group.

7. Install SQL Server 2005 with Reporting Service and Analysis service.

8. Configure new account as service account for Report Server and Analysis server.

9. Install Visual Studio 2008.

10. Start installation of CRM 4.0

11. Enter display name for your Organization.

12. Next step is to select installation path, you can leave this as it is or select specific folder,

13. Next select website for CRM, I choose new website with different port address in my case it was 5555 as shown in image below,

14. Next you need to enter URL for Reporting server.

15. Next you have to select Organization Unit. Click on Browse button and select the root node of your domain in my case it is chirag.

16. On next step you need to specify security account, choose the one you created in step 6. Enter the password in password textbox and click next.

17. Select your local machine as Email Router setting or select specific machine on domain which you are using at email server. I chose my local machine so localhost.

18. Once you click next you will see System Requirements screen. If Domain user, SQL Server Reporting Service and ASP.NET are installed properly you will receive no error or warning else you will receive error message. I received following errors,

19. If you receive error message for SQL Server or SQL Server Reporting Service don’t be afraid. Open Services from Start – All Programs – Administrative Tools – Services. Check whether SQL Server Agent is running. If not right click on service and select property. Select Startup Type as Automatic and click on start button.

20. Another common error is for Indexing service. Follow the steps mention in point 19 to start Indexing Service.

21. You can see a warning mentioning Verify Domain User account SPN for the Microsoft Dynamics CRM ASP.NET Application Pool account. This will usually shows when you add specific domain account for security account in step 16. You can solve this warning now or after installation by following steps mentioned at http://billoncrmtech.blogspot.com/2008/08/now-i-am-master-tips-for-running-crm-40.html

22. If System Requirements screen show no error or warning on next step installation will be started.

23. Finally you will see following screen, this means your CRM is installed.

Happy Programming !!!!

Chirag Darji

ASP.NET Consultant & Trainer

SQL Server Date Format and Convert DateTime to particular format

chiragrdarji — Fri, 30 Jul 2010 12:28:49 +0000

I was playing with different date format in SQL Server as need to display date in YYYY-MM-DD HH:MI:SS.MMM format. I knew there is a CONVERT function which can do this however I did not have the exact parameter value to convert my date to mentioned format. I got really use full chart on internet which provides different option and parameter value for CONVERT function. For my case syntax is

SELECT CONVERT(nvarchar(23),GetDate(),121)

You can check complete table here.

Happy Programming !!!!

Chirag Darji

ASP.NET Consultant & Trainer

Find all columns on which full text is enabled

chiragrdarji — Thu, 01 Jul 2010 18:47:44 +0000

In my recent project I need to identify all columns on which full text index is created. You can find that in management studio from Database – Storage – Full Text Catalogs and right click on catalog name and select property. It display all tables and columns as shown below,

Fig – (1) All columns on which full-text index is created.

An alternative is to use query to find all columns on which full-text index is created.

SELECT tbl.[Name] TableName,clm.[Name] ColumnName FROM
Sys.Tables tbl INNER JOIN Sys.Columns clm
ON tbl.[object_id] = clm.[object_id]
INNER JOIN sys.fulltext_index_columns fic
ON clm.[column_id] = fic.[column_id]
WHERE tbl.[Type] = ‘U’

Happy Programming !!!!

Chirag Darji

ASP.NET Consultant & Trainer

Saving changes is not permitted. The changes you made require following tables to be dropped and re-created – SQL SERVER 2008

chiragrdarji — Wed, 10 Mar 2010 18:42:20 +0000

Today while working in SQL Server 2008, I encounter an interesting problem which does not allow me to change design of any table in particular database. Each time when I try to change table columns or resize the I receive following message,

Saving changes is not permitted. The changes you made require following tables to be dropped and re-created. You have either made changes to a table that can’t be recreated or enabled the option prevent saving changes that require the table to be re-created.

Fig – (1) SQL Server 2008 – Saving changes is not permitted

You will receive this message when you restore database created on other server. SQL Server 2008 by default prevent changes for database which are created on another server by enabling “Prevent saving changes that require table re-creation” from Tools – Options.

Fig – (2) Solution – SQL Server 2008 – Saving changes is not permitted

To solve this go to Tools – Options and uncheck “Prevent saving changes that require table re-creation” option.

Happy Programming !!!

Chirag Darji

SQL Server – Maximum columns in Table, Maximum Columns in Group By, Cluster Index Per Table, Max Database Size, Maximum characters in NTEXT, NVARCHAR(MAX) and all maximum in SQL SERVER

chiragrdarji — Sat, 06 Mar 2010 06:47:25 +0000

While reading MSDN today I came across very interested topic. This is very use full specially in interview. Link shows maximum character allow in NVARCHAR(MAX), NTEXT, VARCHAR(MAX), Maximum cluster index per table, maximum columns per table, Maximum columns per Foreign Key, Maximum Columns in Group By and so on. Here is the link from MSDN OR you can read here copied from MSDN.

The following table specifies the maximum sizes and numbers of various objects defined in SQL Server databases or referenced in Transact-SQL statements.

SQL Server Database Engine object	Maximum sizes/numbers SQL Server (32-bit)	Maximum sizes/numbers SQL Server (64-bit)
Batch size1	65,536 * Network Packet Size	65,536 * Network Packet Size
Bytes per short string column	8,000	8,000
Bytes per GROUP BY, ORDER BY	8,060	8,060
Bytes per index key2	900	900
Bytes per foreign key	900	900
Bytes per primary key	900	900
Bytes per row8	8,060	8,060
Bytes in source text of a stored procedure	Lesser of batch size or 250 MB	Lesser of batch size or 250 MB
Bytes per varchar(max), varbinary(max), xml, text, or image column	2^31-1	2^31-1
Characters per ntext or nvarchar(max) column	2^30-1	2^30-1
Clustered indexes per table	1	1
Columns in GROUP BY, ORDER BY	Limited only by number of bytes	Limited only by number of bytes
Columns or expressions in a GROUP BY WITH CUBE or WITH ROLLUP statement	10	10
Columns per index key7	16	16
Columns per foreign key	16	16
Columns per primary key	16	16
Columns per nonwide table	1,024	1,024
Columns per wide table	30,000	30,000
Columns per SELECT statement	4,096	4,096
Columns per INSERT statement	4096	4096
Connections per client	Maximum value of configured connections	Maximum value of configured connections
Database size	524,272 terabytes	524,272 terabytes
Databases per instance of SQL Server	32,767	32,767
Filegroups per database	32,767	32,767
Files per database	32,767	32,767
File size (data)	16 terabytes	16 terabytes
File size (log)	2 terabytes	2 terabytes
Foreign key table references per table4	253	253
Identifier length (in characters)	128	128
Instances per computer	50 instances on a stand-alone server for all SQL Server editions except for Workgroup. Workgroup supports a maximum of 16 instances per computer. SQL Server supports 25 instances on a failover cluster.	50 instances on a stand-alone server. 25 instances on a failover cluster.
Length of a string containing SQL statements (batch size)1	65,536 * Network packet size	65,536 * Network packet size
Locks per connection	Maximum locks per server	Maximum locks per server
Locks per instance of SQL Server5	Up to 2,147,483,647	Limited only by memory
Nested stored procedure levels6	32	32
Nested subqueries	32	32
Nested trigger levels	32	32
Nonclustered indexes per table	999	999
Number of distinct expressions in the GROUP BY clause when any of the following are present: CUBE, ROLLUP, GROUPING SETS, WITH CUBE, WITH ROLLUP	32	32
Number of grouping sets generated by operators in the GROUP BY clause	4,096	4,096
Parameters per stored procedure	2,100	2,100
Parameters per user-defined function	2,100	2,100
REFERENCES per table	253	253
Rows per table	Limited by available storage	Limited by available storage
Tables per database3	Limited by number of objects in a database	Limited by number of objects in a database
Partitions per partitioned table or index	1,000	1,000
Statistics on non-indexed columns	30,000	30,000
Tables per SELECT statement	Limited only by available resources	Limited only by available resources
Triggers per table3	Limited by number of objects in a database	Limited by number of objects in a database
Columns per UPDATE statement (Wide Tables)	4096	4096
User connections	32,767	32,767
XML indexes	249	249

1Network Packet Size is the size of the tabular data stream (TDS) packets used to communicate between applications and the relational Database Engine. The default packet size is 4 KB, and is controlled by the network packet size configuration option.

2The maximum number of bytes in any index key cannot exceed 900 in SQL Server. You can define a key using variable-length columns whose maximum sizes add up to more than 900, provided no row is ever inserted with more than 900 bytes of data in those columns. In SQL Server, you can include nonkey columns in a nonclustered index to avoid the maximum index key size of 900 bytes.

3Database objects include objects such as tables, views, stored procedures, user-defined functions, triggers, rules, defaults, and constraints. The sum of the number of all objects in a database cannot exceed 2,147,483,647.

4Although a table can contain an unlimited number of FOREIGN KEY constraints, the recommended maximum is 253. Depending on the hardware configuration hosting SQL Server, specifying additional FOREIGN KEY constraints may be expensive for the query optimizer to process.

5This value is for static lock allocation. Dynamic locks are limited only by memory.

6If a stored procedure accesses more than 8 databases, or more than 2 databases in interleaving, you will receive an error.

7If the table contains one or more XML indexes, the clustering key of the user table is limited to 15 columns because the XML column is added to the clustering key of the primary XML index. In SQL Server, you can include nonkey columns in a nonclustered index to avoid the limitation of a maximum of 16 key columns. For more information, see Index with Included Columns [ http://msdn.microsoft.com/en-us/library/ms190806.aspx ] .

8 SQL Server supports row-overflow storage which enables variable length columns to be pushed off-row. Only a 24-byte root is stored in the main record for variable length columns pushed out of row; because of this, the effective row limit is higher than in previous releases of SQL Server. For more information, see the "Row-Overflow Data Exceeding 8 KB" topic in SQL Server Books Online.

Replication Objects

The following table specifies the maximum sizes and numbers of various objects defined in SQL Server Replication.

SQL Server Replication object	Maximum sizes/numbers SQL Server (32-bit)	Maximum sizes/numbers SQL Server (64-bit)
Articles (merge publication)	256	256
Articles (snapshot or transactional publication)	32,767	32,767
Columns in a table1 (merge publication)	246	246
Columns in a table2 (SQL Server snapshot or transactional publication)	1,000	1,000
Columns in a table2 (Oracle snapshot or transactional publication)	995	995
Bytes for a column used in a row filter (merge publication)	1,024	1,024
Bytes for a column used in a row filter (snapshot or transactional publication)	8,000	8,000

1If row tracking is used for conflict detection (the default), the base table can include a maximum of 1,024 columns, but columns must be filtered from the article so that a maximum of 246 columns is published. If column tracking is used, the base table can include a maximum of 246 columns. For more information on the tracking level, see the "Tracking Level" section of How Merge Replication Detects and Resolves Conflicts [ http://msdn.microsoft.com/en-us/library/ms151749.aspx ] .

2The base table can include the maximum number of columns allowable in the publication database (1,024 for SQL Server), but columns must be filtered from the article if they exceed the maximum specified for the publication type.

Happy Programming !!!

Chirag Darji

XML Parsing Error: no element found

chiragrdarji — Wed, 17 Feb 2010 09:05:46 +0000

Today while working with JQuery-Ajax, I found an interesting error. I have used $.ajax() function to retrieve data from remote page. While testing I found that the page always show error : XML Parsing Error: no element found. Error does not contain specific information about the source of error. The common reason for XML Parsing Error: no element found is missing closing tag for one or two html element, so I double checked everything to make sure not miss any closing( ) tags.

After searching for while I found that somehow ASP.NET treat the response of page as XML document and that’s why we receive XML Parsing Error: no element found error.

To solve this error I added a line Response.ContentType = "text/HTML" to .cs page. This line tells ASP.NET runtime that response is HTML text and not XML.

Happy Programming!!!

JQuery Conflict with Mootool and other libraries !!! Use JQuery.noConflict()

chiragrdarji — Thu, 28 Jan 2010 12:31:00 +0000

We all may have use JQuery in our application to build rich UI. While working with JQuery today I found that JQuery is not working on some pages where I have user mootool scripts. I search on net and found a very descriptive solution at JQuery site.

According to this article the reason for JQuery conflict is the use of $ function. mootool and prototype.js files have their own $ function. So when we use $() and try to access JQuery (as it is shorten form of jQuery()) browser is not able to resolve which $() function it has to use. To avoid JQuery conflict we have to use jQuery.noConflict() function.

While you read JQuery site article you may have observe the order of java script files added to web page. Read carefully and you find that you have to add other libraries first and then add JQuery library to page. If you change the order and add the JQuery library first, either mootool(or other library which you have included) or JQuery will not work.

Happy Programming !!!