General MySQL Oracle SQL Server

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YEARWEEK() - Year Week Combination
How to calculate the year week combination from a given date using the YEARWEEK() function? YEARWEEK(date, mode) is a MySQL built-in function that calculates the year week combination from a given date. For example: SELECT YEARWEEK('2024-03-04'), WEEK('2024-03-04'); -- +------------------------+---- ... 2023-11-16, 331🔥, 0💬

TRUNCATE() - Truncating to Decimal Place
How to truncate a value to a given decimal place using the TRUNCATE() function? TRUNCATE(X, D) is a MySQL built-in function that truncates X to decimal place of D. For example: SELECT TRUNCATE(-1.58, 0), TRUNCATE(23.298, 1), TRUNCATE(23.298, -1); -- +--------------------+-------- -------------+------... 2023-11-14, 352🔥, 0💬

SQRT() - Square Root of X
How to calculate the square root of a given number using the SQRT() function? SQRT(X) is a MySQL built-in function that calculates the square root of a given number. For example: SELECT SQRT(2), SQRT(4), SQRT(8); -- +--------------------+-------- -+--------------------+-- | SQRT(2) | SQRT(4) | SQRT(... 2023-11-14, 325🔥, 0💬

TAN() - Tangent Trigonometric Value
How to calculate the tangent trigonometric value of a given angle using the TAN() function? TAN(X) is a MySQL built-in function that calculates the tangent trigonometric value of a given angle in radians. For example: SELECT TAN(0.1), TAN(1.57), TAN(3.14); -- +---------------------+------- ----------... 2023-11-14, 279🔥, 0💬

Calling MySQL Built-in Functions
Where to find answers to frequently asked questions about calling MySQL Built-in Functions? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com team about calling MySQL Built-in Functions: Function Name Case Insensitive Function Argument Modifier Variable Number ... 2023-11-14, 307🔥, 0💬

UPPER() - Convert String to Upper Case
How to convert a string to upper case using the UPPER() function? UPPER(str) is a MySQL built-in function that converts all characters of a given into upper case characters. For example: SET @str = 'dba.FYIcenter.com'; SELECT UPPER(@str); -- +-------------------+ -- | UPPER(@str) | -- +-------------... 2023-11-13, 308🔥, 0💬

MySQL Functions on Character String Values
Where to find reference information and tutorials on MySQL database functions on string values? I want to know how to use SUBSTRING(), REPLACE() and other character string related functions. Here is a collection of reference information and tutorials on MySQL database functions on string values comp... 2023-11-10, 332🔥, 0💬

Updating Existing Rows in MySQL
How To Update Existing Rows in a Table in MySQL? Updating existing rows in a table requires to run the UPDATE statement with a WHERE clause to identify the row. The following sample script updates one row with two new values: &lt;?php include "mysql_connection.php"; $sql = "UPDATE fyi_links SET ... 2023-09-10, 1712🔥, 1💬

💬 2023-09-10 Pintu kumar: To update existing rows in a table in MySQL, you can use the UPDATE statement. Here's a general syntax for updating rows in MySQ...

Breaking Query Output into Pages in MySQL
How To Break Query Output into Pages in MySQL? If you have a query that returns hundreds of rows, and you don't want to present all of them to your users on a single page. You can break output into multiple pages, and only present 10 rows per page like what Google Website is doing. To do this, you n... 2022-10-01, 14923🔥, 1💬

💬 2022-10-01 David: MySQL is the best!

Introduction to Date and Time Handling in MySQL
Where to find answers to frequently asked questions on Introduction to Date and Time Handling in MySQL? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on Introduction to Date and Time Handling in MySQL. Clear answers are provided with tutorial exerc... 2021-08-04, 2722🔥, 2💬

💬 2021-03-13 Strain John: Hey, u gave us good information. It is easy to understand for everyone and also having good content. I appreciated your afforts ...

Changing Your Own Password in MySQL
How To Change the Password for Your Own User Account in MySQL? If you want to change the password of your own user account, you should use your user account connect to the server "mysql" first. You should then use the "SET PASSWORD ..." command to change the password of the current user account. The... 2021-02-10, 7372🔥, 1💬

Starting MySQL Server in MySQL
How To Start MySQL Server in MySQL? If you want to start the MySQL server, you can run the "mysqld" program in a command window as shown in the following tutorial: &gt;cd \mysql\bin &gt;mysqld "mysqld" will run quietly without printing any message in you command window. So you will see nothi... 2018-06-12, 6721🔥, 0💬

Installing MySQL Server in MySQL
How To Install MySQL Server in MySQL? MySQL is an open source database management system developed by MySQL AB, http://www.mysql.com. You can download a copy and install it on your local computer very easily. Here is how you can do this: Go to http://dev.mysql.com/downloads /mysql/5.0.html.Select th... 2018-06-12, 1699🔥, 0💬

MySQL Server Features in MySQL
What Is MySQL in MySQL? MySQL is an open source database management system developed by MySQL AB, http://www.mysql.com. MySQL has the following main features: Works on many different platforms. APIs for C, C++, Eiffel, Java, Perl, PHP, Python, Ruby, and Tcl are available. Fully multi-threaded using ... 2018-06-12, 1682🔥, 0💬

Downloading and Installing MySQL on Windows
Where to find answers to frequently asked questions on Downloading and Installing MySQL on Windows? I want to learn how to install MySQL database. Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on Downloading and Installing MySQL on Windows. Clear a... 2018-06-12, 1668🔥, 0💬

Administrator Tools for Managing MySQL Server
Where to find answers to frequently asked questions on Administrator Tools for Managing MySQL Server? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on Administrator Tools for Managing MySQL Server. Clear answers are provided with tutorial exercises... 2018-06-06, 1742🔥, 0💬

Verify the Version of MySQL Server in MySQL
How Do You Know the Version of Your MySQL Server in MySQL? If you want to know the version number of your MySQL server, you can use the "mysqladmin" program in a command window as shown in the following tutorial: &gt;cd \mysql\bin &gt;mysqladmin -u root version mysqladmin Ver 8.41 Distrib 5.... 2018-06-06, 1601🔥, 0💬

Shutting Down MySQL Server in MySQL
How To Shutdown MySQL Server in MySQL? If you want to shutdown your MySQL server, you can run the "mysqladmin" program in a command window as shown in the following tutorial: &gt;cd \mysql\bin &gt;mysqladmin shutdown   ⇒ Administrator Tools for Managing MySQL Server ⇐ Creating a Test Table ... 2018-06-06, 1582🔥, 0💬

Verify MySQL Server Status in MySQL
How Do You Know If Your MySQL Server Is Alive in MySQL? If you want to know whether your MySQL server is alive, you can use the "mysqladmin" program in a command window as shown in the following tutorial: &gt;cd \mysql\bin &gt;mysqladmin -u root ping mysqld is alive The "mysqld is alive" mes... 2018-06-06, 1581🔥, 0💬

Creating a Test Table in MySQL Server in MySQL
How To Create a Test Table in Your MySQL Server in MySQL? If you want to create a test table in your MySQL server, you can use the "mysql" program in a command window as shown in the following tutorial: &gt;cd \mysql\bin &gt;mysql -u root Welcome to the MySQL monitor. Commands end with ; or ... 2018-06-06, 1558🔥, 0💬

What Is "mysqld" Command in MySQL
What Is "mysqld" in MySQL? "mysqld" is MySQL server daemon program which runs quietly in background on your computer system. Invoking "mysqld" will start the MySQL server on your system. Terminating "mysqld" will shutdown the MySQL server. Here is a tutorial example of invoking "mysqld" with the "--... 2018-06-01, 3102🔥, 0💬

Shutdown the Server with "mysqladmin" Command in MySQL
How To Shut Down the Server with "mysqladmin" in MySQL? If you want to shut down the server with "mysqladmin", you can use the command "mysqladmin shutdown" as shown in the following tutorial example: &gt;cd \mysql\bin &gt;mysqladmin -u root shutdown If this command returns no messages, your... 2018-06-01, 2553🔥, 0💬

Show Server Status with "mysqladmin" in MySQL
How To Check Server Status with "mysqladmin" in MySQL? If you want to check the server status by with "mysqladmin", you can following this tutorial example: &gt;cd \mysql\bin &gt;mysqladmin -u root status Uptime: 223 Threads: 1 Questions: 1 Slow queries: 0 Opens: 12 Flush tables: 1 Open tabl... 2018-06-01, 1895🔥, 0💬

Tools to Manage MySQL Server in MySQL
What Tools Available for Managing MySQL Server in MySQL? MySQL comes with the following programs as administration tools for you to manage your MySQL server: mysqld - MySQL server daemon. You can use "mysqld" to start your MySQL server. mysqladmin - A command-line interface for administrators to per... 2018-06-01, 1713🔥, 0💬

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General MySQL Oracle SQL Server