'Avg sal' presentation slideshows

Single-Row Functions

Single-Row Functions. Input. Output. arg 1. arg 2. Result value. arg n. SQL Functions. Function. Function performs action. Two Types of SQL Functions. Functions. Multiple-row functions. Single-row functions. Single-Row Functions. Manipulate data items

1.35k views • 96 slides

Structured Query Language Recap

Database Programming Using Oracle 11g. Structured Query Language Recap. Structured Query Language Basics. Select Statement Its only known way to interact with Database to retrieve Data . Declarative Language DRL : Data Retrieval Language. Structured Query Language Basics.

632 views • 63 slides

Aggregating Data Using Group Functions

Aggregating Data Using Group Functions. Objectives. After completing this lesson, you should be able to do the following: Identify the available group functions Describe the use of group functions Group data using the GROUP BY clause

545 views • 44 slides

Displaying Data from Multiple Tables

Displaying Data from Multiple Tables. Objectives. After completing this lesson, you should be able to do the following: Write SELECT statements to access data from more than one table using equality and nonequality joins

522 views • 44 slides

SQL: Part 3

SQL: Part 3. Original materials supplied by the Oracle Academic Initiative (OAI). Edited for classroom use by Professor Laku Chidambaram. Not for commercial use. Do not redistribute. OUTLINE. Group Functions Sub-queries Set Operations. Group Functions.

551 views • 43 slides

GROUP FUNCTIONS

GROUP FUNCTIONS. Objectives. After completing this lesson, you should be able to do the following: Identify the available group functions Describe the use of group functions Group data using the GROUP BY clause Include or exclude grouped rows by using the HAVING clause.

586 views • 32 slides

Aggregating Data Using Group Functions

Aggregating Data Using Group Functions. What Are Group Functions?. EMP. Group functions operate on sets of rows to give one result per group. DEPTNO SAL --------- --------- 10 2450 10 5000 10 1300 20 800 20 1100

443 views • 31 slides

The Optimizer

The Optimizer. How ORACLE optimizes SQL statements. David Konopnicky 1997, Revised by Mordo Shalom 2004. What is optimization?. Whenever a DML statement is issued, ORACLE must determine how to execute it. There may be different ways to execute the statement.

315 views • 31 slides

Enhanced Guide to Oracle 10g

Enhanced Guide to Oracle 10g. Chapter 3: Using SQL Queries to Insert, Update, Delete, and View Data. Aggregating Data Using Group Functions (multiple row functions). Objectives. After completing this lesson, you should be able to do the following: Identify the available group functions

440 views • 30 slides

5 Aggregating Data Using Group Functions

435 views • 26 slides

Aggregating Data Using Group Functions

Aggregating Data Using Group Functions. Objectives. After completing this lesson, you should be able to do the following: Identify the available group functions Describe the use of group functions Group data using the GROUP BY clause

385 views • 26 slides

Aggregating Data Using Group Functions

Aggregating Data Using Group Functions. Objectives. After completing this lesson , you should be able to do the following: Identify the available group functions Describe the use of group functions Group data using the GROUP BY clause

413 views • 26 slides

Aggregating Data Using Group Functions

Aggregating Data Using Group Functions. Objectives. At the end of this lesson, you should be able to: Identify the available group functions Describe the use of group functions Group data using the GROUP BY clause Include or exclude grouped rows by using the HAVING clause.

415 views • 25 slides

Aggregating Data Using Group Functions

Aggregating Data Using Group Functions. Objectives. At the end of this lesson, you should be able to: Identify the available group functions Describe the use of group functions Group data using the GROUP BY clause Include or exclude grouped rows by using the HAVING clause.

363 views • 24 slides

Software Specification KXA233 Lecture 5A Group Functions and Subqueries

Software Specification KXA233 Lecture 5A Group Functions and Subqueries. Paul Crowther School of Computing University of Tasmania. Today. Detail on group functions Subqueries - writing a query for the results of a query. Aggregating Data Using Group Functions.

364 views • 23 slides

Logging into the gateway server

Lab 3: Aggregate Functions, Group By & Having Clauses TA City University of Hong Kong. Logging into the gateway server. In our lab, we are going to do operations to Oracle Server through Unix System, so you are required to log into Unix first:

298 views • 21 slides

Extended Group By Queries

CSED421 Database Systems Lab. Extended Group By Queries. Group function. GROUP BY Sort the data with distinct value for data of specified columns Limit the window of data processed by the aggregate function Find the job and average salary of each jobs Select job, avg (salary)

353 views • 15 slides