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Cours et Tutoriels sur le Langage SQL

Cours et Tutoriels sur le Langage SQL

http://sql.sh/

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13.2.5 INSERT Syntax INSERT [LOW_PRIORITY | DELAYED | HIGH_PRIORITY] [IGNORE] [INTO] tbl_name [(col_name,...)] {VALUES | VALUE} ({expr | DEFAULT},...),(...),... [ ON DUPLICATE KEY UPDATE col_name=expr [, col_name=expr] ... ] Or: The SQL Tutorial for Data Analysis This tutorial is designed for people who want to answer questions with data. For many, SQL is the “meat and potatoes” of data analysis—it’s used for accessing, cleaning, and analyzing data that’s stored in databases. It’s very easy to learn, yet it’s employed by the world’s largest companies to solve incredibly challenging problems. In particular, this tutorial is meant for aspiring analysts who have used Excel a little bit but have no coding experience.

MySQL 5.7 Reference Manual A select_expr can be given an alias using AS alias_name. The alias is used as the expression's column name and can be used in GROUP BY, ORDER BY, or HAVING clauses. For example: SELECT CONCAT(last_name,', ',first_name) AS full_name FROM mytable ORDER BY full_name; The AS keyword is optional when aliasing a select_expr with an identifier. The preceding example could have been written like this: SELECT CONCAT(last_name,', ',first_name) full_name FROM mytable ORDER BY full_name; However, because the AS is optional, a subtle problem can occur if you forget the comma between two select_expr expressions: MySQL interprets the second as an alias name.

5 Free Database and SQL Query Courses for Programmers to Learn Online Hello guys, I have been sharing some free programming resources e.g. books and courses in this blog for quite some time. Earlier I have shared free courses on Java, Maven, Spring, and Data Structure and Algorithms and today I'll share some of the free online training courses to learn SQL and Database. Why you should learn SQL? Well, it's one of the must-have skill for programmers, application developer, and IT professionals. Like Linux, this is one skill which is going to serve you longer than any other programming language, framework, or library.

13.5.1 String Comparison Functions expr LIKE pat [ESCAPE 'escape_char'] Pattern matching using an SQL pattern. Returns 1 (TRUE) or 0 (FALSE). If either expr or pat is NULL, the result is NULL. Top 5 Online Courses to Learn SQL and Database for Beginners - Best of Lot Hello guys, if you are a computer science graduate or new into the programming world and interested in learning Database and, SQL and looking for some awesome resources like books, courses, and tutorials to start with, then you have come to the right place. In the past, I have shared some of the best SQL books and tutorials, and today, I am going to share some of the best SQL and database courses to learn so you can master this useful technology. If you don't know what SQL is and why you should learn it, let me give you a brief overview of SQL for everyone's benefit. SQL is a programming language to work with a database.

MySQL 5.7 Reference Manual INSERT [LOW_PRIORITY | DELAYED | HIGH_PRIORITY] [IGNORE] [INTO] tbl_name [PARTITION (partition_name,...)] [(col_name,...)] {VALUES | VALUE} ({expr | DEFAULT},...),(...),... [ ON DUPLICATE KEY UPDATE col_name=expr [, col_name=expr] ... ] MySQL Uppercase Words (or ucfirst & ucwords) I recently needed to clean up a MySQL Table which contained people's names. Upon searching the MySQL commands, I was surprised to find there was no equivalent of PHP's ucfirst or ucwords. There were commands to convert entire strings into upper or lower case, but not just the first letter. However, I quickly found a simple script to make a word uppercase:

SQL cheat sheet If there’s one thing that almost no application can live without, it’s the database. The pillar that holds the data, the ultimate source of the data conflict resolution, the storage that survives power outages. Working with a database correctly is the key to successful application design.

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