Rank Function

Rank Function

Rank() and Dense_Rank() functions Introduced in SQL Server 2005 Returns a rank starting at 1 based on the ordering of rows imposed by the ORDER BY clause ORDER BY clause is required PARTITION BY clause is optional When the data is partitioned, rank is reset to 1 when the partition changes RANK is a temporary value calulated when the query is run. Syntax RANK ( […]

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Advanced Functions

Advanced Functions
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Conversion Functions

Conversion Functions

CAST Function/CONVERT Function CAST/CONVERT function is used to explicitly convert an expression of one data type to another.  Syntax of CAST Function : CAST( expression AS type [ (length) ] ) Arguments expression The value to convert to another datatype. type The datatype that you wish to convert (The new data type. ).This includes xml, bigint, and sql_variant. Alias data types cannot be used. length […]

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Date/Time Functions

Date/Time Functions
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Numeric/Math Functions

Numeric/Math Functions
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String Functions

String Functions
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Sql Function

Sql Function

SQL Server provides many built-in functions and also lets you create user-defined functions. Types Deterministic Functions Nondeterministic Functions Deterministic functions: Deterministic functions always return the same result any time they are called with a specific set of input values and given the same state of the database. ABS DATEDIFF POWER ACOS DAY RADIANS ASIN DEGREES ROUND ATAN EXP SIGN ATN2 FLOOR SIN CEILING ISNULL SQUARE […]

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Select Statement

Select Statement

Introduction SELECT statement is used to retrieve records from one or more tables in a SQL Server database.[O]-Optional Full Syntax SELECT  [ ALL | DISTINCT ] [ TOP (top_value) [ PERCENT ] [ WITH TIES ] ] expressions FROM tables [WHERE conditions] [GROUP BY expressions] [HAVING condition] [ORDER BY expression [ ASC | DESC ]]; Table CREATE TABLE [dbo].[Employee] ( [Id]     INT           NOT NULL, [Name]   […]

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Sql Commands

Sql Commands

Introduction Sql Commands are used to communicate with the database to perform specific tasks, work, functions and queries with data. SQL commands are grouped into four major categories depending on their functionality: Data Definition Language (DDL) Data Manipulation Language (DML) Transaction Control Language (TCL) Data Control Language (DCL) Data Definition Language (DDL) DDL statements are used to alter/modify a database or table structure and schema. […]

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