SQL Data Types
Data type is type of data or it is a predefined keyword which specifies that, variable hold which types of value. In SQL server there are lots of data such as SQL server data type and user define data types.
SQL Constraints
Constraints are used to limit the type of data that can go into a table. Such constraints can be specified when the table is first created via the CRE
SQL Clause
In SQL there are many clauses which are widely used in SQL database. In SQL server mainly two clauses are widely used namely: WHERE and TOP. Let’s see these two descriptions briefly.
‘SELECT’ Command with Date Method
SELECT command with SQL DATE method:There is lots of date method which are widely used in SQL server database in which some are given as follows.SELEC
‘Select’ Command in SQL
SQL SELECT command is widely used in SQL database server. It is very important command through which we have to perform many task in SQL server database. Select command is used for select data from database table and result is stored in result table,
‘SELECT’ command with Aggregate Function
SQL provides some aggregate function which is used in database. It is predefined which available by SQL server. SQL aggregate functions return a single value, calculated from values in a column.
‘SELECT’ command with SQL operator
There is lots of operator available in SQL server database such as assignment operator, bitwise operator, logical operator, comparison operator etc. Here we will discuss some important operator which is used widely in SQL server database.
JOINS in SQL Server
By using joins, you can retrieve data from two or more tables based on logical relationships between the tables. Joins indicate how Microsoft SQL Server should use data from one table to select the rows in another table.
Index in SQL Server
Index:Index is most important concept of SQL Server database to increase performance of retrieving data from database. Indexes speed up the querying p
Function in SQL
Function:Functions are compact pieces of Transact SQL code, which can accept parameters, and return either a value, or a table. They are saved as indi
Important SQL Keys
SQL Keys:In SQL, keys are used to maintain referential integrity among relations. Put simply, this means keys allow tables to reference each other, an
CREATE Command in SQL Server
CREATE command is used to create database structure. It is play an important role in SQL database server. Create command is used to create many database structures such as: Table, View, Stored procedure, function etc.