Uploaded byHammad Rasheed
SQL Basics
This document provides information about SQL queries and joins. It begins by introducing SQL (Structured Query Language) which is used to communicate with databases and retrieve required information. It describes the basic CRUD (Create, Read, Update, Delete) functions of SQL. It then discusses different types of SQL queries - aggregate function queries, scalar function queries, and join queries. It provides the syntax and explanation of inner joins, outer joins (left, right, full) which are used to query data from multiple tables based on relationships between columns. The document is presented by Hammad, Bilal and Awais.
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SQL Basics
- 2. GROUP MEMBERSADIL SHAKIRHAMMADYOUSAFAMMAR YASIR HASEEB KHALIDAWAIS AFTAB BUTTMUDDASIR ABIDBILAL AHMED MOHAMMED IMRANFAIZA KHALID RAAZIA IRSHADHAMMAD RASHEED ZULQARNAIN BAJWA
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- 6. Database“An organized collectionof information”OR “Set of tables each having different class of data.”
- 7. Structured Query Language( SQL ) A language to communicate with the database
- 8. A tool toretrieve the required information from database
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- 10. Syntax of SQLis in plain English
- 11. To question thedatabaseWhat SQL can do?With SQL you can:1. Execute queries against a database2. Perform CRUD function:CREATE New databasesNew tables in a database Records in a databaseREAD Retrieve data from a database
- 12. UPDATE Update Records in a database
- 13. DELETE Delete Records from a database
- 14. Pre-requisites for SQLRelationalDatabase
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- 20. 1-m SYNTAXStatementTable NameConditionSELECTCustomerName, City, Country FROM Customer WHERE Country=‘USA’ColumnsFROM ClauseWHERE ClauseSELECT Clause
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