{"id":87154,"date":"2021-03-17T09:00:56","date_gmt":"2021-03-17T03:30:56","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=87154"},"modified":"2021-03-12T17:18:18","modified_gmt":"2021-03-12T11:48:18","slug":"sql-vs-plsql-difference","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/sql-vs-plsql-difference\/","title":{"rendered":"SQL vs PL\/SQL &#8211; Difference between SQL and PLSQL"},"content":{"rendered":"<p>In this tutorial, we will understand what SQL and PL\/SQL are and the use cases of each of them. We aim to understand the situations when we should put which one to use.<\/p>\n<p>We know that SQL is the query language for the database and is easy to use with the available tech-stack because of the available plugins and supports.<\/p>\n<p>When we talk about PL\/SQL it is the Procedural Language that uses SQL as its backend. It has the power to combine both the SQL and high-level procedural statements to obtain better results.<\/p>\n<p>Let us now dive more into both SQL and PL\/SQL and understand the use cases and the differences between them.<\/p>\n<h3>What is SQL?<\/h3>\n<p>SQL or more popularly known as \u201cSee-quel\u201d is a Structured Query language, which is used to perform CRUD operations on the databases.<\/p>\n<p>It supports the creation, alteration, and deletion of databases. It is a widely used query language compatible with almost all tech stacks that are currently in use.<\/p>\n<p>SQL has in-built plugins and packages in almost all high-level languages to create and manage database connections.<\/p>\n<p>Some of the characteristics of SQL are as follows:<\/p>\n<ul>\n<li>It is a query language.<\/li>\n<li>It has wide compatibility and is scalable.<\/li>\n<li>SQL has a simple query structure making it easy to be used even by beginners.<\/li>\n<li>It helps in managing and scaling the databases.<\/li>\n<li>It provides us with vast datatypes making it a preferred choice to be used as the query language in almost all fields.<\/li>\n<\/ul>\n<h3>What is PL\/SQL?<\/h3>\n<p>PL\/SQL or more popularly known as Procedural Language extensions to SQL is a high-level language which gives us the power to use procedures with SQL.<\/p>\n<p>PL\/SQL is a procedural language that uses SQL as its database. With the help of PL\/SQL, we can use conditional and iterative statements on the otherwise normal SQL queries.<\/p>\n<p>This makes it easy for us to draw structured insights from the data.<\/p>\n<p>PL\/SQL allows us to use the if-else block and the iterative loops like for and while in the SQL queries.<\/p>\n<p>Some of the properties of PL\/SQL are as follows:<\/p>\n<ul>\n<li>PL\/SQL has a block structure and is written in the form of blocks of logical code units.<\/li>\n<li>It provides us with the freedom to use procedural concepts, like iteration and conditional statements with SQL queries.<\/li>\n<li>PL\/SQL is preferred when we need to store procedures and maintain the log.<\/li>\n<li>PL\/SQL provides us with the inbuilt blocks to handle errors and manages them using the inbuilt error handling modules.<\/li>\n<li>It provides us with the capability to create variables that can last for the execution of the procedural program.<\/li>\n<\/ul>\n<h3>Differences Between SQL and PL\/SQL<\/h3>\n<table>\n<tbody>\n<tr>\n<td><b>Sr.No<\/b><\/td>\n<td><b>Property<\/b><\/td>\n<td><b>SQL<\/b><\/td>\n<td><b>PL\/SQL<\/b><\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>Definition<\/td>\n<td><span style=\"font-weight: 400;\">Structured Query Language or SQL is a query language used to perform CRUD operations on databases.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PL\/SQL or Procedural Language Extension for SQL is a high-level language which uses SQL as its backend.<\/span><\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>Variables<\/td>\n<td><span style=\"font-weight: 400;\">SQL can\u2019t define variables<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PL\/SQL gives us the freedom to use variables.<\/span><\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>Control Flow<\/td>\n<td><span style=\"font-weight: 400;\">Control flow managers are absent.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Here, Control flow managers like if-else are present.<\/span><\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>Query Execution<\/td>\n<td><span style=\"font-weight: 400;\">SQL executes queries one by one.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PL\/SQL executes queries in block form.<\/span><\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>Type<\/td>\n<td><span style=\"font-weight: 400;\">SQL is a declaration-based language.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PL\/SQL is a procedure focussed language<\/span><\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>Compatibility<\/td>\n<td><span style=\"font-weight: 400;\">SQL can be used within PL\/SQL.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PL\/SQL code can\u2019t be embedded in SQL.<\/span><\/td>\n<\/tr>\n<tr>\n<td>7<\/td>\n<td>Orientation<\/td>\n<td><span style=\"font-weight: 400;\">SQL is a data language.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PL\/SQL is a functional language.<\/span><\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>Writes<\/td>\n<td><span style=\"font-weight: 400;\">Used to write DDL and DML queries.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Used to write blocks and functions of logical programs.<\/span><\/td>\n<\/tr>\n<tr>\n<td>9<\/td>\n<td>Use<\/td>\n<td><span style=\"font-weight: 400;\">Allows us to develop server pages that help us to display the data output from the query.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Allows us to build applications that use SQL as the backend to display the retrieved data from SQL queries.<\/span><\/td>\n<\/tr>\n<tr>\n<td>10<\/td>\n<td>Scalability<\/td>\n<td><span style=\"font-weight: 400;\">SQL is scalable when added with another supporting technology.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PL\/SQL is scalable on an individual level.<\/span><\/td>\n<\/tr>\n<tr>\n<td>11<\/td>\n<td>Interaction with Server<\/td>\n<td><span style=\"font-weight: 400;\">SQL directly interacts with the database server.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PL\/SQL never interacts directly with the database server.<\/span><\/td>\n<\/tr>\n<tr>\n<td>12<\/td>\n<td>Error Handling<\/td>\n<td><span style=\"font-weight: 400;\">SQL doesn\u2019t support error handling.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PL\/SQL has built-in error handling modules.<\/span><\/td>\n<\/tr>\n<tr>\n<td>13<\/td>\n<td>Purpose<\/td>\n<td><span style=\"font-weight: 400;\">Helps us to create and maintain data and also helps in analyzing the data.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Allows us to create applications using SQL as a backend and logical code execution.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Summary<\/h3>\n<p>In this tutorial, we have understood SQL vs PL\/SQL. We have seen the use cases where to use which database. And the properties of each of them.<\/p>\n<p>We have then focussed on the differences between SQL and PL\/SQL based on various parameters like the functionality and the variables, error handling etc.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In this tutorial, we will understand what SQL and PL\/SQL are and the use cases of each of them. We aim to understand the situations when we should put which one to use. We&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":87155,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[66],"tags":[23842,23843,23841,23840],"class_list":["post-87154","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sql","tag-comparison-between-sql-and-plsql","tag-difference-between-sql-and-pl-sql","tag-sql-vs-pl-sql","tag-sql-vs-plsql"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SQL vs PL\/SQL - Difference between SQL and PLSQL - DataFlair<\/title>\n<meta name=\"description\" content=\"SQL vs PL\/SQL - Learn the differences between SQL and PLSQL to understand where to use which one. 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