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Difference between Delete, Truncate, Drop
Delete command is used to delete all the rows from the table. If we use where clause then according to condition specific rows will be deleted. In del
Primary key and foreign key
Primary key is a key that uniquely identifies a record in a table. It cannot accepts a null value. We cannot have multiple primary key in a table. It
Union and Union all Operator in sql
Union and Union all both are use for combine the result-set of two of more select queries. Let us explain both individuallyUnion-Union Operator is us
Where Clause in SQL Statement
Where clause is very important clause for filtering data .It search the records from the table according to the condition given in the where clause.
Temporary Tables Magic Table and Injection in SQL
Tempopary tables are created at runtimes and ability to perform all the operation like the normal table. These tables have limited scope. This table is stored in tempdb.
User Defined function in SQL
In this blog, we are explaining about the basic of user defined function and difference between Inline table-valued function and Multi Statement Table-Valued Function.
User Define function in Sql Server
User Defined Functions play a major role in SQL. User Defined functions can be used to perform a complicated logic, can accept parameters and return data. Many a times we have to write complex logic which cannot be written using a single query.
View in SQL
A view is a SQL statement which is stored in the database with a name. A view is actually a formation of a table in the form of a predefined Structured Query Language (SQL) query.
Trigger In SQL
Triggers are store procedure, which are automatically executed or fired when some events occur like deletion, insertion of data. Triggers are database object which is attached to a table and is executed automatically.
SQL Constraints
Constraints are used to apply some rules for the record in a table. If any rule is violated between constraint and data, then the action is aborted by the constraint.
SQL Queries
In previous article we have discussed about SQL and some queries. In this part we will continue on SQL Queries: Customer IdNameAddressContact Marks
Introduction to SQL
SQL stands for Structured Query Language. The structured query language is used to manipulate and access the databases. SQL is an ANSI (American National Standard Institute) standard.