The Perfect Mix of Technology & Knowledge
Derived tables:- Derived tables are the tables which are created on the fly with the help of the Select statement. It is different from the temporary table in the way that in case of temporary table, first we have to create a temporary table, insert the data into the table, select the data from the temporary table and … Read more
Pivot Table:- Pivot tables are used to summarize and display the data, specially in case of report data by means of aggregating the values. Pivot table can be used if we want to display the unique values of the column of a table as the columns of another table. It turns the unique values of a specified … Read more
Output Clause:- The SQL SERVER 2005 gives us an Output Clause which gives us the information about each row affected by the Insert, Update , Delete and Merge statement. It is more useful than @@scope_Identity and @@Identity column since these global variables gives us the information about the last inserted identity column value, but the Output clause gives us … Read more
Common table expression (CTE):- Common table expression or CTE can be described as the temporary, named record set return by the execution of the query (insert, delete, update, select or update view statement). It is not stored as an object in the database and it last only till the execution of the SQL Query. It … Read more
Sometimes our application required a database object which allows manipulation of data from a set of rows on row by row basic which means single row at a time. Cursor is the database object which solves this problem. With the use of cursor, we can fetch a sets of rows based on some conditions and manipulate the data of … Read more
Views:- View can be described as virtual table which derived its data from one or more than one table columns.It is stored in the database. It is used to implements the security mechanism in the Sql Server. For example, suppose there is table called Employeeinfo whose structure is given below:- Create table EmployeeInfo(EmpId int, EmpName … Read more
Indexes-Indexing is way to sort and search records in the table. It will improve the speed of locating and retrieval of records from the table.It can be compared with the index which we use in the book to search a particular record. In Sql Server there are two types of Index 1) Clustered Index 2) … Read more
Indexes-Indexing is way to sort and search records in the table. It will improve the speed of locating and retrieval of records from the table.It can be compared with the index which we use in the book to search a particular record. In Sql Server there are two types of Index 1) Clustered Index 2) … Read more
