Plan du cours
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
Pré requis
- Computer literacy
- Knowledge of any operating system
Nos Clients témoignent (11)
J'ai aimé cette formation parce qu'elle était interactive
Amalia - Banca Transilvania
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Traduction automatique
Lot of content and exactly the requested one.
Pascal - Diehl
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J'ai beaucoup apprécié le rythme de la formation et les exercices donnés entre les explications.
Trana
Formation - SQL in SQL Server
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the practices and the trainer notes
Hamda AlMahri - Dubai Courts
Formation - ORACLE PL/SQL Fundamentals
Luka is an excellent, patient teacher with a sense of humor. His relaxed style made the stressful experience of "be called to the blackboard" more pleasant. Also one student explaining or guiding the other was a very good idea. I will use the motto "KISS methodology" he shared with us in both my SQL exercises , private and professional life since I like to overcomplicate things. Luka also kept the good pace considering how much material was there for him to show and for us to learn.
IWONA KLIMASZEWSKA - GP Strategies Poland sp. z o.o.
Formation - ORACLE SQL Fundamentals
J'ai apprécié l'équilibre entre les cours magistraux et les exercices. Lorsque j'étais bloqué, Luke m'aidait très bien à comprendre le problème et à trouver des solutions, ce qui a eu un impact très positif sur ma compréhension.
Tom - Welsh Revenue Authority
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Really enjoyed compression data components
James - Medtech Limited
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The course built lesson to lesson, and the pacing was a big deal for me.
Bradford Moore - Regis College
Formation - SQL in MySQL
Luke was opened to answer any question and explain multiple times until everyone understood the exercises.
Alexandra Popa - OTP BANK ROMANIA S.A.
Formation - Oracle SQL Language
J'ai aimé la façon dont le formateur a expliqué les informations sur les sujets et le fait qu'il a prêté attention aux détails, de sorte que les leçons étaient très pratiques et logiques.
Andreea
Formation - Oracle SQL for beginners
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Les exercices sont divertissants et les sujets sont bien introduits.
Adrian-Madalin Chirita - DB Global Technology SRL
Formation - Oracle SQL Advanced
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