Oracle SQL for beginners Treningskurs

Last updated

Kurskode

osqlbgn

Varighet

21 timer (vanligvis 3 dag inkludert pauser)

Krav

  • Computer literacy
  • Knowledge of any operating system

Oversikt

lyttere

Denne opplæringen er adressert for folk som begynner å jobbe med SQL språket i Oracle databasen

Kursbesvarelsen for spørsmål:

  • Hvordan lage en spørring?
  • Hvilke muligheter har SQL ?
  • Hva er en relasjonsdatabase?
  • Hva er strukturen og SQL kommandoer

Machine Translated

Kursplan

Relational database models

  • The structure of a relational database
  • Connection types of tables
  • The normalization and denormalization database
  • Relational Operators

Download the data

  • Rules for writing SQL queries
  • The syntax for the SELECT
  • Selecting all columns
  • Inquiries from arithmetic operations
  • Aliases columns
  • Literals
  • Concatenation operator

Limiting results

  • The WHERE clause
  • Comparison operators
  • LIKE Condition
  • Prerequisite BETWEEN ... AND
  • IS NULL condition
  • Condition IN
  • Boolean operators AND, OR and NOT
  • Many of the conditions in the WHERE clause
  • The order of the operators.
  • DISTINCT clause

Sorting Data

  • The ORDER BY clause
  • Sorting by multiple columns or expressions

SQL functions

  • The differences between the functions of one and multilines
  • Features text, numeric, date,
  • Explicit and implicit conversion
  • Conversion functions
  • Nesting functions
  • Viewing the performance of the functions - dual table
  • Getting the current date function SYSDATE
  • Handling of NULL values

Aggregating data using the grouping

  • Grouping functions
  • How grouping functions treat NULL values
  • Create groups of data - the GROUP BY clause
  • Grouping multiple columns
  • Limiting the function result grouping - the HAVING clause

Retrieving data from multiple tables

  • Types of connectors
  • The use NATURAL JOIN
  • Aliases tables
  • Joins in the WHERE clause
  • INNER JOIN Inner join
  • External Merge LEFT, RIGHT, FULL OUTER JOIN
  • Cartesian product

Subqueries

  • Place subqueries in the SELECT command
  • Subqueries single and multi-lineage
  • Operators Subqueries single-line
  • Features grouping in subquery
  • Operators Subqueries multi-IN, ALL, ANY
  • How NULL values ​​are treated in subqueries

Operators collective

  • UNION operator
  • UNION ALL operator
  • INTERSECT operator
  • MINUS operator

Insert, update, and delete data

  • INSERT command
  • Copy data from another table
  • UPDATE command
  • DELETE command
  • TRUNCATE command

Transactions

  • Commands COMMIT, ROLLBACK, and SAVEPOINT

DDL commands

  • The main database objects
  • Rules for naming objects
  • Creating tables
  • The data types available for columns
  • DEFAULT option
  • Option NULL and NOT NULL

Managing tables

  • Referential integrity CHECK, PRIMARY KEY, FOREIGN KEY, UNIQUE
  • Create a table by the query
  • Delete a table DROP TABLE
  • DESCRIBE command

Other schema objects

  • Sequences
  • Synonyms
  • Views

Testimonials

★★★★★
★★★★★

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