General MySQL Oracle SQL Server

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CHARSET() - Detecting Character Set Name
How to detect the character set name associated to a given character string using the CHARSET() function? CHARSET(str) is a MySQL built-in function that returns the character set name associated to a given character string. A character set name refers to a set of rules to encode a set of characters ... 2025-10-24, 2366🔥, 0💬

Rename an Existing Table in MySQL
How To Rename an Existing Table in MySQL? If you want to rename an existing table, you can use the "ALTER TABLE ... RENAME TO" statement. The tutorial script below shows you a good example: mysql&gt; ALTER TABLE tip RENAME TO faq; Query OK, 0 rows affected (0.01 sec) mysql&gt; SELECT * FROM ... 2018-02-14, 2365🔥, 0💬

Writing Inner Joins with the WHERE Clause in SQL Server
How To Write an Inner Join with the WHERE Clause in SQL Server? If you don't want to use the INNER JOIN ... ON clause to write an inner join, you can put the join condition in the WHERE clause as shown in the following query example: SELECT l.id, l.url, r.comment FROM fyi_links l, fyi_rates r WHERE ... 2016-10-29, 2365🔥, 0💬

"DELETED" - Old Record of an DML Event Instance in SQL Server
How To Access the Deleted Record of an Event in SQL Server? When a DML event occurs, SQL Server will prepare a temporary table called "DELETED", which contains the old record of the affected row, which is: A copy of the deleted row for a DELETE statement. A copy of the row to be updated for an UPDAT... 2016-10-24, 2362🔥, 0💬

Filerting out Duplications in Returning Rows in MySQL
How To Filter Out Duplications in Returning Rows in MySQL? If there are duplications in the returning rows, and you want to remove the duplications, you can use the keyword DISTINCT in the SELECT clause. The DISTINCT applies to the combination of all data fields specified in the SELECT clause. The t... 2018-01-06, 2361🔥, 0💬

Query Output Sorted by Multiple Columns in Oracle
Can the Query Output Be Sorted by Multiple Columns in Oracle? You can specifying multiple columns in the ORDER BY clause as shown in the following example statement, which returns employees' salaries sorted by department and salary value: SQL&gt; SELECT department_id, first_name, last_name, sala... 2019-12-19, 2359🔥, 0💬

"ALTER TRIGGER" - Modifying Existing Triggers in SQL Server
How To Modify Existing Triggers using "ALTER TRIGGER" in SQL Server? If you want to make changes to an existing trigger, you could use the "ALTER TRIGGER" statements to refine the trigger again. The tutorial exercise below shows you how to modify the trigger defined in a previous tutorial: USE FyiCe... 2016-10-24, 2355🔥, 0💬

Creating and Managing Schemas in SQL Server
Where to find answers to frequently asked questions on Creating and Managing Schemas in SQL Server? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on Creating and Managing Schemas in SQL Server. Clear answers are provided with tutorial exercises on ... 2016-10-22, 2352🔥, 0💬

odbc_result() - Retrieve Field Values
How To Retrieve Field Values using odbc_result()? After calling odbc_fetch_row(), the field values of the fetched row are available in the result set object. You can use odbc_result() to retrieve the value of any given field with two syntax formats: $value = odbc_result($field_name); #- Retrieving v... 2024-07-11, 2351🔥, 0💬

Finding ntwdblib.dll Version 2000.80.194.0
Where to Find ntwdblib.dll Version 2000.80.194.0? You know that the copy of ntwdblib.dll version 2000.2.8.0 included in Windows binary version of PHP 5.2.3 does not work with MS SQL Server 2005. You need to get a new version of ntwdblib.dll. One way to get a free copy of ntwdblib.dll is to download ... 2024-04-14, 2350🔥, 0💬

mssql_field_name() - Retrieve Field Names
How To List All Field Names in the Result Set using mssql_field_name()? The result set object returned by a SELECT statement also contains column (field) names, lengths and types. You can use mssql_field_name(), mssql_field_length() and mssql_field_type() to get those information. The tutorial exerc... 2024-03-23, 2349🔥, 0💬

Creating an Index on a View in SQL Server
How To Create an Index on a View in SQL Server? If you need to search and sort data in a view with a large number of row, you may want to create an index on the view to speed up your search process. The tutorial exercise below shows you how to create a unique clustered index on a view. DROP VIEW fyi... 2016-11-03, 2349🔥, 0💬

Turning on the MSSQL API Module
How to Turn on the MSSQL API Module? If you want to access SQL Server database with PHP scripts, the first thing you need to do is to turn on the MSSQL API Module as shown in this tutorial: 1. Prepare a single line script to test the MSSQL API Module: &lt;?php mssql_connect('LOCALHOST','sa' ,'FYI... 2024-04-14, 2348🔥, 0💬

Deleting an Existing Row with DELETE Statements in SQL Server
How To Delete an Existing Row with DELETE Statements in SQL Server? If you want to delete an existing row from a table, you can use the DELETE statement with a WHERE clause to identify that row. Here is good sample of DELETE statements: -- insert a row for this test INSERT INTO fyi_links (url, id) V... 2016-10-30, 2347🔥, 0💬

SQL Server FAQs - PHP MSSQL Functions - Managing Tables and Data Rows
A collection of 17 FAQs on using PHP MSSQL functions to connect to manage tables and data rows. Clear explanations and tutorial exercises are provided on creating tables; inserting multiple data rows; updating and deleting data rows; searching data from multiple tables; looping through result sets; ... 2024-03-07, 2346🔥, 0💬

Adding More Data to the Test Table in MySQL
How To Add More Data to the Testing Table in MySQL? If you want to continue with other tutorial exercises in this FAQ collection, you need to add more data to the testing table. Follow the script below to add a new column and: mysql&gt; ALTER TABLE fyi_links ADD COLUMN tag VARCHAR(8); mysql&... 2017-11-02, 2344🔥, 0💬

Assign Names to Query Output Columns in MySQL
How To Name Query Output Columns in MySQL? Each column in the query output has a default name. If you don't like the default name, you can specify a new name for any column in the query output by using the AS clause. The following statement shows you a good example: mysql&gt; SELECT tag AS Categ... 2017-09-28, 2343🔥, 0💬

Using Group Functions in the SELECT Clause in SQL Server
How To Use Group Functions in the SELECT Clause in SQL Server? If group functions are used in the SELECT clause, all rows that meet the criteria defined in the WHERE clause will be treated as a single group. The group functions will be apply all rows in that group as a whole. The final output of the... 2016-10-25, 2342🔥, 0💬

Checking Your PHP Installation
How To Check Your PHP Installation? PHP provides two execution interfaces: Command Line Interface (CLI) and Common Gateway Interface (CGI). If PHP is installed in the \php directory on your system, you can try this to check your installation: Run "\php\php -v" command to check the Command Line Inter... 2024-04-29, 2339🔥, 0💬

DROP VIEW - Deleting Existing Views in SQL Server
How To Drop Existing Views from a Database in SQL Server? If you don't need a specific view any more, you can use the DROP VIEW statement to delete it from the database. The following tutorial exercise shows you how to delete the view, fyi_links_view: USE FyiCenterData; GO SELECT * FROM sys.views; G... 2016-11-05, 2337🔥, 0💬

Transferring Tables from One Schema to Another in SQL Server
How To Transfer an Existing Table from One Schema to Another Schema in SQL Server? If you want to move an existing table from one schema to another schema, you can use the "ALTER SCHEMA ... TRANSFER ..." statement as shown in the tutorial exercise below: -- Login with "sa" USE FyiCenterData; GO -- C... 2016-10-22, 2336🔥, 0💬

Simplest Way To Create New Databases in SQL Server
What is the simplest way to create a new database in SQL Server? The simplest way to create a new database is to use the "CREATE DATABASE" statement with this syntax: CREATE DATABASE database_name For example, run this statement: CREATE DATABASE FyiCenterData GO A new database called "FyiCenterData"... 2016-11-24, 2335🔥, 0💬

mssql_close() - Disconnecting from a SQL Server
How To Disconnect from a SQL Server using mssql_close()? When you call mssql_connect(), it will return an object representing the connection to the SQL Server. This connection object will be used by subsequent MSSQL function calls. When you are done with this connection, you should close it to free ... 2024-04-07, 2332🔥, 0💬

What Are Triggers in SQL Server
What Are Triggers in SQL Server? A trigger is a special kind of stored procedure that automatically executes when an event occurs in the database server. A trigger is really an event handler. SQL Server allows users to create triggers (event handlers) for 3 types of events: DML Event - Occurs when a... 2016-10-25, 2332🔥, 0💬

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General MySQL Oracle SQL Server