General MySQL Oracle SQL Server

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Removed: DECODE() - Decoding Data with Password
How to decode a byte sequence generated from the ENCODE() function using the DECODE() function? DECODE(cipher, pass) is a MySQL built-in function that encodes a byte sequence generated from the ENCODE() function. Note that DECODE() is no longer supported. It was: Introduced MySQL 4.0. Removed in MyS... 2024-10-14, 1396🔥, 0💬

Removed MySQL Functions
Where to find answers to frequently asked questions about Removed MySQL Built-in Functions? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com team about Removed MySQL Built-in Functions: Removed: ENCODE() - Encoding Data with Password Removed: DECODE() - Decodi... 2024-10-14, 1381🔥, 0💬

LAG() - N-Row before Current Row within Window
How to evaluate a field expression on n-row before the current row in the current result set window using the LAG() function? LAG(exp, n, default) is a MySQL built-in window function that evaluates a field expression on n-row before the current row in the current result set window. For example: SELE... 2024-09-28, 1814🔥, 0💬

FIRST_VALUE() - First Value of Result Set Window
How to obtain the first value of a field expression in the current result set window using the FIRST_VALUE() function? FIRST_VALUE(exp) is a MySQL built-in window function that returns the first value of a field expression in the current result set window. For example: SELECT help_topic_id AS tip, h... 2024-09-28, 1639🔥, 0💬

LAST_VALUE() - Last Value of Result Set Window
How to obtain the last value of a field expression in the current result set window using the LAST_VALUE() function? LAST_VALUE(exp) is a MySQL built-in window function that returns the last value of a field expression in the current result set window. For example: SELECT help_topic_id AS tip, help_... 2024-09-28, 1622🔥, 0💬

DENSE_RANK() - Density Rank of Sorted Values
How to calculate the density rank of the sorting field expression in the current result set window using the DENSE_RANK() function? DENSE_RANK() is a MySQL built-in window function that calculates the density rank of the sorting field expression in the current result set window. For example: SELECT ... 2024-09-28, 1525🔥, 0💬

LEAD() - N-Row after Current Row within Window
How to evaluate a field expression on n-row after the current row in the current result set window using the LEAD() function? LEAD(exp, n, default) is a MySQL built-in window function that evaluates a field expression on n-row after the current row in the current result set window. For example: SELE... 2024-09-28, 1489🔥, 0💬

RANK() - Vale Rank of Sorted Values
How to calculate the value rank of the sorting field expression in the current result set window using the RANK() function? RANK(n) is a MySQL built-in window function that calculates the value rank of the sorting field expression in the current result set window. For example: SELECT help_topic_id A... 2024-09-12, 1630🔥, 0💬

NTILE() - Dividing Window into N Tiles
How to divid result set window into N tiles and return the tile position using the NTILE() function? NTILE(n) is a MySQL built-in window function that divides result set window into n tiles and returns the tile position of the current row. For example: SELECT help_topic_id AS tip, help_category_id A... 2024-09-12, 1597🔥, 0💬

NTH_VALUE() - N-th Value of Result Set Window
How to obtain the n-th value of a field expression in the current result set window using the NTH_VALUE() function? NTH_VALUE(exp, n) is a MySQL built-in window function that returns the n-th value of a field expression in the current result set window. For example: SELECT help_topic_id AS tip, help... 2024-09-12, 1347🔥, 0💬

ROW_NUMBER() - Row Position in Result Set Window
How to obtain the row position of the current row in the current result set window using the ROW_NUMBER() function? ROW_NUMBER(n) is a MySQL built-in window function that returns the row position of the current row in the current result set window. For example: SELECT help_topic_id AS tic, help_cate... 2024-09-12, 1187🔥, 0💬

PERCENT_RANK() - Rank Percentage of Sorted Values
How to calculate the rank percentage of the sorting field expression in the current result set window using the PERCENT_RANK() function? PERCENT_RANK(n) is a MySQL built-in window function that calculates the rank percentage of the sorting field expression in the current result set window. For examp... 2024-09-12, 1094🔥, 0💬

SQL Server Connection Protocols
What connection protocols are supported by SQL Server? SQL Server supports the following connection protocols: 1. TCP/IP (Transmission Control Protocol/Internet Protocol) - This is the most commonly used protocols to connect to SQL Server databases. It allow client tools or application programs on a... 2024-08-14, 2858🔥, 0💬

Configuring ODBC Connection and DSN for SQL Servers
A collection of 13 FAQs on connecting SQL Server via an ODBC DSN setting. Clear explanations and tutorial exercises are provided on creating new DSN with the SQL Server ODBC driver; starting SQL Server Browser Service; enabling TCP/IP protocol on SQL Server; verifying TCP/IP port numbers; testing OD... 2024-08-14, 2824🔥, 0💬

SQL Server TCP/IP Connection Info
What information is needed for a client tool or application to connect to a SQL Server database using the TCP/IP protocol? In order to connect to a SQL Server database using the TCP/IP protocol, you need to know the following information: 1. Host Name - The name of the hosting computer where the SQL... 2024-08-14, 2810🔥, 0💬

What Is ODBC (Open Database Communication)?
What Is Open Database Communication (ODBC)? ODBC, Open Database Communication, a standard API (application program interface) developed by Microsoft for Windows applications to communicate with database management servers. If you want to access a database server through an ODBC driver from an applic... 2024-08-14, 2654🔥, 0💬

SQL Server Connection Concepts
Where to find answers to frequently asked questions on SQL Server Connection Concepts? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on SQL Server Connectivity Concepts. SQL Server Connection Protocols SQL Server TCP/IP Connection Info   ⇒ SQL Serv... 2024-08-14, 2351🔥, 0💬

Adding a New DSN with the ODBC Driver for SQL Server
How To Add a New DSN with the ODBC Driver for SQL Server? Assuming that the ODBC driver for SQL Server has been installed as part of the Windows system, the next step of setting up ODBC connection to SQL Server is to create a new DSN (Data Source Name) with the ODBC Data Source Administrator: Go to ... 2024-08-06, 2613🔥, 0💬

Defining the Name and Server for a new DSN
How To Define the Name and Server for a new DSN? Continuing from the previous tutorial, on the first screen of the "Create a New Data Source to SQL Server" wizard, you should enter 3 fields: Name, Description, and Server as suggested below: Name: FYI_SQL_SERVER Description: FYIcenter.com SQL Server ... 2024-08-06, 2463🔥, 0💬

Providing Login Information for a New ODBC DSN
How To Provide Login Information for a New ODBC DSN? Continue from the previous tutorial. After clicking Next on the first screen of the "Create a New Data Source to SQL Server" wizard, you should see the second screen asking you to select SQL Server login type, login name and password. Select the r... 2024-08-06, 2312🔥, 0💬

Getting "Connection failed" Error on ODBC DSN Creation
Why Am I Getting Errors When Creating a New ODBC DSN? Continue from the previous tutorial. After clicking Next on the SQL login information screen, ODBC manager will try to connect to the SQL Server with the login information you provided. After a period of waiting time, you may get error message bo... 2024-08-06, 2288🔥, 0💬

Requirements on SQL Server Network Connections
What Are the Requirements on SQL Server Network Connections? By default, SQL Server 2005 Express Edition is installed only one connection protocol enabled: Shared Memory - SQL Server connection protocol for applications that are running on the same machine where the SQL Server is running. For exampl... 2024-08-06, 2247🔥, 0💬

Configuring ODBC DSN with Different Port Numbers
How To Configure ODBC DSN with Different Port Numbers? If your SQL Server is not using the default port number, like 1269, you need to set the port number to the correct value during the ODBC DSN creation process, as show in this tutorial: 1. Start ODBC Data Source Administrator and click System DSN... 2024-07-25, 2504🔥, 0💬

Enabling TCP/IP Protocol on a SQL Server
How To Enable TCP/IP Protocol on a SQL Server? By default, the TCP/IP protocol is turned off when a SQL Server is installed to reduce security risk. But if you want applications to connect and access the SQL Server, you need to enable the TCP/IP protocol on the server by following this tutorial: 1. ... 2024-07-25, 2408🔥, 0💬

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General MySQL Oracle SQL Server