what does means in sql - PrivacyWall

https://www.w3schools.com/sql/sql_operators.asp

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SQL Operators - W3Schools

W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more.

https://stackoverflow.com/questions/38662318/what-does-mean-in-sq...

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What does * mean in sql? - Stack Overflow

So, in a SELECT statement, writing * is the same of listing all the columns the entity has. Here you can find probably the best tutorial for SQL learning. I am providing you answer by seperating each part of code. SELECT == It orders the computer to include or select each content from the database name (table ) .

https://www.sisense.com/blog/sql-symbol-cheatsheet/

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SQL cheat sheet & query syntax - Sisense

SQL is one of the analyst’s most powerful tools. In SQL Superstar, we give you actionable advice to help you get the most out of this versatile language and create beautiful, effective queries. When you are new to programming in SQL, you will come across a lot of hard-to-search-for character operators.

https://www.theknowledgeacademy.com/blog/sql-operators/

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SQL Operators: A Complete Guide (With Examples) - The Knowledge Academy

SQL Operators refer to the diverse set of symbols and keywords used to perform various operations on data in relational databases. These operators include arithmetic, comparison, logical, bitwise, unary, assignment, membership, NULL-safe equality, and concatenation operators, each serving specific purposes in crafting efficient SQL queries.

https://www.databasestar.com/sql-operators/

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SQL Operators: The Complete Guide - Database Star

SQL operators are symbols and keywords that are used to compare data. They are commonly used in the WHERE clause of a query. If you’ve learnt about the WHERE clause (which is used to filter your results to match a criteria), you would have learnt a little about operators. The equals sign = is an operator, which means “is equal to”.

https://www.geeksforgeeks.org/what-is-sql/

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What is SQL? - GeeksforGeeks

SQL stands for Structured Query Language. It is a standardized programming language used to manage and manipulate relational databases. It enables users to perform a variety of tasks such as querying data, creating and modifying database structures, and managing access permissions.

https://www.w3schools.com/postgresql/postgresql_operators.php

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PostgreSQL Operators - W3Schools

The IN operator is used when a column's value matches any of the values in a list: Return all records where the brand is present in this list: ('Volvo', 'Mercedes', 'Ford'): The BETWEEN operator is used to check if a column's value is between a specified range of values: Return all records where the year is between 1970 and 1980:

https://stackoverflow.com/questions/19855497/what-does-angle-brac...

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What does <> (angle brackets) mean in MS-SQL Server?

<> operator means not equal to in MS SQL. It compares two expressions (a comparison operator). When you compare nonnull expressions, the result is TRUE if the left operand is not equal to the right operand; otherwise, the result is FALSE. If either or both operands are NULL, see the topic SET ANSI_NULLS (Transact-SQL). See here : Not Equal To.

https://stackoverflow.com/questions/23919378/what-does-double-bar...

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What does double bars (||) mean in SQL? - Stack Overflow

SQL Server uses '+' as a string concatenation operator, for instance. (Of course, the better solution would have been for the poster to simply run the query without the count() to see what it did in the first place instead of posting here.)

https://stackoverflow.com/questions/6824414/what-does-the-asteris...

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What does the * asterisk mean in a mysql statement?

It means that you are selecting every column in the table. This is something you should avoid in production environments though because it causes a bit of overhead and things tend to break when you alter your tables and use the * selector. A better way to do this is to select only the columns you need each time, like the following example:

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