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Introduction
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Tools Used in This Course
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Download PostgreSQL
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Install PostgreSQL
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Download SQLectron
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Install SQLectron
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Connect to PostgreSQL - Credentials
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Connect to PostgreSQL Using SQLectron
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Import Course Data Using SQLectron
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FOR WINDOWS 32-BIT USERS: Download, Install, Configure & Import Data
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Check Imported Data
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So.. What is a Database?
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SQL Data Types
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Finally Some Fun! Extracting Data Based on Requirements
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Filtering Data using WHERE Keyword
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Filter Data by Range Using BETWEEN
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Filter Data by Set of Values Using IN
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Filter Data by Date
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More Filtering by Date
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Another Query Filtering by Date
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Filter Data by Strings (Names, Addresses, ...)
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More Filtering by Strings
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More Filtering by Strings 2
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More Filtering by Strings 3
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How to Ignore Caps when Filtering by String
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AND Operator
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OR Operator
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NOT Operator
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AND, OR & NOT Operators: Which Has The Highest Priority?
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Basic Math Operations
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Modulo Operator
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It's Payday! Calculate The Net Salary for Employees
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Filter Data with Math Equations
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Concatenate Strings with '||' Operator
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Concatenate Strings with Numbers
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Give Your Report Fields A Cool Name
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A Report for Payroll
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Order Records by Column
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Order Records by Multiple Columns
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How Alias Names Cannot Be Used with WHERE
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LIMIT Record Count Fetched by Your Query
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Fetch A Field's Unique Values Using DISTINCT
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Using DISTINCT Keyword with Multiple Columns
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What is a NULL Value Anyway?
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Build More Sophisticated Queries with CASE Statements
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Your Knowledge So Far Under A Great Test
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Let Me Introduce You to Functions
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SUM Function
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AVG (Average) Function
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COUNT Function
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MIN & MAX Functions
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How To Count Your Field's Unique Values
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GROUP BY Clause: Use Functions with Dimensions
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GROUP BY More Than One Dimension
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Now For Some Tough Workout
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Filter By Aggregate Functions with HAVING Clause
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Character Functions - UPPER, LOWER & INITCAP
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Character Functions - CONCAT & LENGTH
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Character Functions - LPAD & RPAD
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Character Functions - TRIM
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Character Functions - REPLACE
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Character Functions - SUBSTR
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Number Functions - MOD & ROUND
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Number Functions - TRUNC
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Selectception: A Select Query Inside Another Select Query!
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Auto Data Conversion in SQL
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Cast Date to Character
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Cast Number to Character
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Cast Timestamp to Character
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Cast Character to Number
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Cast Character to Date & Timestamp
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UNION
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UNION ALL
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Important Note about Combining Queries
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INTERSECT
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EXCEPT
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Employees & Departments Tables Revised
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Entity Relationship Diagram (ERD)
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Cartesian Join
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Table Aliases with Joins
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Why I Don't Recommend Cartesian Joins
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Inner Join
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In-Depth Look into Join Types in SQL
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Outer Join - Right, Left & Full
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INSERT a New Record to a Table
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Insert Without Specifying Column Names
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UPDATE a Record's Field Values
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CAUTION! How an UPDATE Query Can Go Wrong
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Update a Record Using Single-Row Functions
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A Good Exercise: Extract Employee's Email Address
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Solution: Extract Employee's Email Address
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DELETE a Table's Record
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Insert Records with Nested Select Queries
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SQL Data Types Revised
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Bookstore Data Set: Let's Move It to Database
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Create Your First Table!
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Insert Data to Your New Table
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Change Column Data Type
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Rename Column
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Add a New Column to Table
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Constraints in SQL
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Primary Keys
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NOT NULL Constraint
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UNIQUE Constraint
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DEFAULT Constraint
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Foreign Keys
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Use Foreign Keys with Joins - Books & Publishers
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Foreign Keys - Properties
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Drop Column
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DROP Table
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Create a New Table with Select Statement
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A Trick to Create an Empty Table with Select Statement
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Insert New Records Using Select Statement
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Views
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Schemas
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Create & Use Schemas
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Introduction to Access Control
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Create User
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Grant SELECT to User
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Grant Insert & Update to User
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Revoke Privilege from User
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User Groups