This SQL Tutorial for Beginners is a complete package for how to learn SQL online. In this SQL tutorial , you will learn SQL programming to get a clear idea of what Structured Query Language is and how you deploy SQL to work with a relational database system.
So, a structured query language is a language that is used to operate the relational databases. Some of the major ways in which SQL is used in conjunction with a relational database is for the purposes of storing, retrieving and manipulating of data stored in a relational database.
Here we have the list of topics if you want to jump right into a specific one:
To learn SQL Online, first let us compare SQL with NoSQL in the below table:
|Type of database||Relational||Non-relational|
|How is data stored||Structured data in tables||Unstructured data in JSON files|
|Suitability for OLTP systems||Excellent||Average|
|Database compliance||ACID properties||CAP Theorem|
The language to communicate with the relational database is the SQL or Structured Query Language. SQL programming helps to operate the relational databases and derive information from it. Some of the operations that the SQL does include creation of database, fetching, modifying, updating and deleting the rows along with storing, manipulating and retrieving data within the relational database. SQL programming is an ANSI standard language but there are a lot of versions of SQL in usage as well.
Structured Query Language or SQL programming is used so extensively for the following reasons.
Here in this section of the SQL tutorial for beginners, we list some of the top features of SQL that make it so ubiquitous when it comes to managing relational databases.
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Here in this section of the SQL tutorial we will learn SQL applications that make it so important in a data-driven world where managing huge databases is the norm of the day.
Today regardless of the relational databases systems by major corporations like Oracle, IBM, Microsoft and others, the one thing that is common to them is the Structured Query Language or SQL. So if you learn SQL online then you will be able to pursue a very broad career spanning a lot of roles of responsibilities. Also if you are learning SQL then it is important for a data science career as well since a data scientist will also have to deal with relational databases and query it using the standard language SQL.
This SQL for beginners can be beneficial to anybody who wants to learn SQL online. Software developers, database administrators, architects, managers can take this SQL tutorial as a first step for learning SQL and excel in their careers.
There are no prerequisites for learning SQL from this SQL for beginners. If you have a basic understanding computer languages and databases, then it is beneficial.
SQL full form is Structured Query Language. SQL is a domain-specific language. It is used in application development language to enable a programmer to work with the data. The data is stored in a relational database. To manage this data, we have relational database management systems like SQL Server, MySQL, MS Access, etc. that use SQL as Read More
SQL is one of the most demanding skill in the current world. Every day a huge amount of data is collected and one have to deal with these databases to make an insightful information. Hence it is important for us to learn SQL as it is a special-purpose database programming language which help to generate useful Read More
Microsoft SQL Server is a relational database management system developed by Microsoft. The product’s primary function is to store and retrieve the data as requested by the user or another application. These functions can either run on the same system or another over a network. Watch this video on How to install SQL Server Read More
A database contains records, and to create, modify, or delete these records SQL queries are used. An SQL query can either be an action query like delete or create or a select query like select or use. These queries are used to find specific data, perform actions on it, or Read More
SQL Data types inform a compiler or interpreter about the characteristics of the data used in a program. In simple words, a data type is a particular kind of data item which helps define the operations that can be performed on the data. There are different data types available like character data type for the letters Read More
Tables are the fundamental level to store data in a relational database management system. It contains a header row at the top of the table which gives list of column names, followed by rows that contain data. Watch this SQL Create Table video [videothumb class="col-md-12" id="2OZQXAsCBvk" alt="SQL Create Table" title="SQL Create Table"] In this tutorial section, Read More
A database contains data, and to store data we need a table. Tables are the fundamental level of a database to store data. It comprises columns, which contain a set of data values of a particular type, and rows, which contains a single data item. In this tutorial section, we will discuss Read More
The INSERT statement is used to insert records in a table. The table selected to insert data must have the same number of columns and values. In this tutorial section, we will discuss on the Insert statement syntax with an example. Watch this Insert query in SQL video [videothumb class="col-md-12" id="sGTtNCU_Cqs" alt="Insert into Table SQL" title="Insert Read More
The Select statement in SQL is the most commonly query used statement in SQL. It is used to either fetch a data according to some specified rule or display an entire table. The data displayed after the query execution is stored in a result table. Watch this video [videothumb class="col-md-12" id="WS_A0-l5IiQ" alt="Select Statement in Read More
'Where' as a word is used to distinguish a place or position and that’s exactly what the SQL Where clause does. Where in SQL is used to specify a condition while fetching the data. The Where in SQL fetches only the necessary records. Watch this Where in SQL video [videothumb class="col-md-12" id="l9tX5hiXW0E" alt="Where Clause in SQL" title="Where Read More
These SQL operators are considered as a set of reserved words used in SQL Where clause. They specify the condition and also serve as a conjunction for multiple conditions in a statement. In this tutorial, we will discuss on: How to Impose Conditions using SQL Operators? AND Operator in SQL and its syntax SQL OR Operator and Read More
In this tutorial section, we will discuss on what is an UPDATE query in SQL and how to update records using SQL UPDATE query in a SQL Table with a Demo. Watch this Update Query in SQL video [videothumb class="col-md-12" id="HyIGW3TsCgY" alt="Update & Delete Using Join" title="Update & Delete Using Join"] A Brief Introduction to the Read More
The Delete query in SQL only deletes records from the table, and it doesn’t make any changes in the definition, i.e., it only manipulates. Hence, it is DML (Data Manipulation Language). The Truncate command in SQL removes all rows from a table, i.e., it reinitializes the identity by making changes in the data definition. Read More
In this SQL tutorial we will learn how to use Order by and Group By in SQL. Group By in SQL is used to arrange similar data into group and Order By in SQL is is used to sort the data in the ascending or descending order. Order By in SQL SQL Read More
Select Distinct in SQL is used to remove the duplicate data from the table. SQL DISTINCT Keyword is used along with the SELECT statement The SQL Distinct syntax is as follows: SELECT DISTINCT column1, column2…. FROM table_name WHERE [condition]; Example: Consider the Student_details table: Name Roll No. Marks Akshay 1 Read More
Alter command in SQL is used to add, delete, or modify columns in an existing table. Alter in SQL is will help to make changes in the existing columns like add columns or delete columns. Watch this Tutorial video [videothumb class="col-md-12" id="v2uSprqdODE" alt="Alter command" title="Alter command"] Alter Table Add Column To add a Read More
is used to combine the two or more results. The each SELECT statement must have same no. of columns, same datatypes and in the same order. Watch this Union Command in SQL Tutorial video [videothumb class="col-md-12" id="VxK6ePlxzkw" alt="SQL Union Tutorial" title="SQL Union Tutorial"] Syntax: SELECT column_name FROM table1 UNION SELECT column_name FROM table2; Union All Read More
LIKE and BETWEEN operators in SQL are used to compare values in a database. In this tutorial section, we will discuss on: LIKE in SQL BETWEEN in SQL Watch this Like and Between operators in SQL [videothumb class="col-md-12" id="jerWdB2j8xk" alt="Like and Between Operators in SQL" title="Like and Between Operators in SQL"] LIKE Operator in SQL Read More
Constraints are the rules applied on data columns on table. These are used to bound the type of data that can go into a table. This ensures the accuracy and consistency of the data. If there is any violation between the constraint and the data action, the action is aborted by the constraint. Watch this Read More
This FORMAT () function in the SQL is utilized for formatting a field in order to be brought into its displayable standard format. The Syntax for the format function is mentioned below: SELECT FORMAT (column_name, format) FROM table name; Here, the column_name - Tells about the ground where formatting are required. And the Read More
SQL(Structured Query Language) has got a huge number of functions. This article will give a description most of the SQL Functions. Check out this Functions in SQL With Examples video [videothumb class="col-md-12" id="cVe06NVDaoI" alt="SQL Functions With Examples" title="SQL Functions With Examples"] The SQL functions are as follows: Aggregate Functions in SQL (Transact-SQL) Aggregate SQL functions perform Read More
SQL Joins is used to combine rows of two or more tables by using common values. Example: Let us consider two tables first is Student details Name Roll No. Marks Akshay 1 57 Charu 2 68 Disha 3 52 Eva 4 68 Himanshu 5 75 Jitesh 6 88 Another table is Personal Detail. Name City Read More
Left Join is a keyword, which is used to select all rows from the left table and also the matched values between the two tables. Watch this Left Join in SQL video [videothumb class="col-md-12" id="jsLLa2_G6OU" alt="Left Join SQL" title="Left Join SQL"] Left Join in SQL The Left Join in SQL basically returns all records Read More
Right Join is a keyword, which is used to select all rows from the right table and also the matched values between the two tables. Watch this Right Join in SQL video [videothumb class="col-md-12" id="U01-172PP7k" alt="Right Join SQL" title="Right Join SQL"] Right Join in SQL The Right Join basically returns all records from the Read More
Inner Join is a keyword, which is used to select all rows from the participating tables as long as there is a match between columns. Watch this Inner Join in SQL video [videothumb class="col-md-12" id="tEIcjjPycj8" alt="Inner Join SQL" title="Inner Join SQL"] Inner Join in SQL SQL Inner join basically gives records that have matching Read More
Full Join is a keyword, which is used to select all records from the right table and also from the left table. Watch this Full Join in SQL video [videothumb class="col-md-12" id="J2NPKB3O-bo" alt="Full Join SQL" title="Full Join SQL"] Full Join in SQL The Full Join basically returns all records from the left table and Read More
RDMS is an information management system which is oriented on a data model. Here all the information is properly stored as tables. RDMS Example systems are SQL Server, Oracle, MySQL, MariaDB and SQLite. RDBMS full form RDBMS full form is for Relational Database Management System. It arranges information into allied rows and columns. Basic Features of RDMS: Read More
ACID Property is the most important part of the database. ACID stands for Atomicity Consistency Isolation Durability. Atomicity: This means that “all or nothing”. When an update occurs to a database either all or none of the update will become available to anyone beyond the user. This update to the database is called a transaction and it either Read More
For a software Developer or a programmer, basic knowledge on SQL is a must. This helps in retrieving the information from the database and to perform modifications and several operations on the data This SQL cheat sheet provides you with the necessary concepts required to start on with SQL. It is helpful for the beginners willing Read More
SQL is a basic query language which every programmer must know. This cheat sheet will guide you through the basic SQL commands required to learn and work on SQL. Watch this SQL Tutorial for Beginners video [videothumb class="col-md-12" id="JTDK6r1GuUU" alt="SQL Tutorial" title="SQL Tutorial"] Further, to learn SQL in-depth, you can refer to the SQL tutorial. You can also download Read More
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