General MySQL Oracle SQL Server

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Downloading and Installing SQL Server Management Studio Express in SQL Server
How to download and install Microsoft SQL Server Management Studio Express in SQL Server? Microsoft SQL Server Management Studio Express (SSMSE) is a free, easy-to-use graphical management tool for managing SQL Server 2005 Express Edition and SQL Server 2005 Express Edition with Advanced Services. I... 2016-12-04, 5044🔥, 0💬

READ_ONLY/READ_WRITE - Database Update Options in SQL Server
How to set database to be READ_ONLY in SQL Server? Databases in SQL Server have two update options: READ_WRITE - Data objects are allowed to be queried and modified. This is the default. READ_ONLY - Data objects are allowed to be queried, but not allowed to be modified. You can use the "ALTER DATABA... 2016-11-20, 5041🔥, 0💬

Conditional Statements and Loops in SQL Server in SQL Server Transact-SQL
Where to find answers to frequently asked questions on Conditional Statements and Loops in SQL Server Transact-SQL? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com team on Conditional Statements and Loops in SQL Server Transact-SQL. Clear answers are provided... 2017-01-11, 5023🔥, 0💬

What Is Transport Network Substrate in Oracle
What Is Transport Network Substrate (TNS) in Oracle? TNS, Transport Network Substrate, is a foundation technology, built into the Oracle Net foundation layer that works with any standard network transport protocol.   ⇒ What Is ODBC in Oracle ⇐ What Is SQL*Plus in Oracle ⇑ Oracle Database Basic Conc... 2025-09-30, 5006🔥, 1💬

Downloading and Installing SQL Server Sample Scripts in SQL Server
How to download and install SQL Server 2005 Sample Scripts in SQL Server? If you want to learn from sample scripts provided by Microsoft, you should follow this tutorial to download and install them: 1. Go to the SQL Server 2005 Samples and Sample Databases download page . 2. Go to the x86 section i... 2019-11-08, 4970🔥, 2💬

💬 2019-11-08 FYIcenter.com: @Nana, please follow AdventureWorksLT - Downloading and Installing the Sample Database in SQL Server tutorial.

💬 2019-10-31 Nana Jacob: Please i need to download AdventureWorksLT

UPDATE Subquery Returning Multiple Rows in SQL Server
What Happens If the UPDATE Subquery Returns Multiple Rows in SQL Server? If a subquery is used in a UPDATE statement, it must return exactly one row for each row in the update table that matches the WHERE clause. If it returns multiple rows, SQL Server will give you an error message. To test this ou... 2016-11-02, 4964🔥, 0💬

What Is Oracle in Oracle
What Is Oracle in Oracle? Oracle is a company. Oracle is also a database server, which manages data in a very structured way. It allows users to store and retrieve related data in a multiuser environment so that many users can concurrently access the same data. All this is accomplished while deliver... 2020-11-11, 4962🔥, 0💬

CHARINDEX() and SUBSTRING() - Locating and Taking Substrings in SQL Server
How To Locate and Take Substrings with CHARINDEX() and SUBSTRING() Functions in SQL Server Transact-SQL? Transact-SQL is not a language designed for manipulating strings, but it does have two simple functions to locate and take substrings: CHARINDEX() and SUBSTRING(). The tutorial exercise below ass... 2017-03-07, 4961🔥, 0💬

Counting Rows with the COUNT(*) Function in SQL Server
How To Count Rows with the COUNT(*) Function in SQL Server? If you want to count the number of rows, you can use the COUNT(*) function in the SELECT clause. The following tutorial exercise shows you some good examples: SELECT COUNT(*) FROM fyi_links GO 7 SELECT COUNT(*) FROM fyi_links WHERE url LIKE... 2016-10-26, 4947🔥, 0💬

INSERT, UPDATE and DELETE Statements in MySQL
Where to find answers to frequently asked questions on INSERT, UPDATE and DELETE Statements in MySQL? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on INSERT, UPDATE and DELETE Statements in MySQL. Clear answers are provided with tutorial exercises... 2018-01-24, 4942🔥, 0💬

DDL (Data Definition Language) Statements for Tables? in SQL Server
What are DDL (Data Definition Language) statements for tables in SQL Server? DDL (Data Definition Language) statements are statements to create and manage data objects in the database. The are three primary DDL statements to create and manage tables: CREATE TABLE - Creating a new table. ALTER TABLE ... 2016-11-20, 4900🔥, 0💬

What Is SQL Server Transact-SQL (T-SQL)?
What is SQL Server Transact-SQL (T-SQL)? SQL Server Transact-SQL, also called T-SQL, is an extension of the standard SQL (Structured Query Language). Transact-SQL was developed by Microsoft and Sybase. Microsoft's implementation ships in the Microsoft SQL Server product. Sybase uses the language in ... 2017-06-16, 4891🔥, 0💬

CAST() - Converting Numeric Expression Data Types in SQL Server
How To Convert Numeric Expression Data Types using the CAST() Function in SQL Server Transact-SQL? If you want to convert the data type of a numeric expression to a new data type, you can use the CAST(expression AS data_type) function. The tutorial exercise below shows you how to use the CAST() func... 2017-03-27, 4886🔥, 0💬

Managing Security, Login and User in SQL Server
Where to find answers to frequently asked questions on Managing Security, Login and User in SQL Server? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on Managing Security, Login and User in SQL Server. Clear answers are provided with tutorial exerc... 2016-10-20, 4883🔥, 0💬

"ALTER TABLE ... ALTER COLUMN" - Changing Column Data Type in SQL Server
How to change the data type of an existing column with "ALTER TABLE" statements in SQL Server? Sometimes, you may need to change the data type of an existing column. For example, you want increase the string length of a column. You can use the "ALTER TABLE ... ALTER COLUMN" statements in the followi... 2016-11-15, 4872🔥, 0💬

Install Oracle Database 10g XE in Oracle
How To Install Oracle Database 10g XE in Oracle? To install 10g universal edition, double click, OracleXEUniv.exe, the install wizard starts. It will guide you to finish the installation process. You should take notes about: The SYSTEM password you selected: fyicenter. Database server port: 1521. Da... 2024-05-01, 4866🔥, 1💬

What Is Program Global Area (PGA) in Oracle
What Is Program Global Area (PGA) in Oracle? A Program Global Area (PGA) is a memory buffer that is allocated for each individual database session and it contains session specific information such as SQL statement data or buffers used for sorting. The value specifies the total memory allocated by al... 2020-07-07, 4862🔥, 0💬

Error: Cannot Drop Index on Primary Key in Oracle
Can You Drop an Index Associated with a Unique or Primary Key Constraint in Oracle? You can not delete the index associated with a unique or primary key constraint. If you try, you will get an error like this: ORA-02429: cannot drop index used for enforcement of unique/primary key.   ⇒ Dropped Table... 2023-05-09, 4858🔥, 1💬

💬 2023-05-09 Shivank: Correct answer is 5

PHP Connections and Query Execution for MySQL
Where to find answers to frequently asked questions on PHP Connections and Query Execution for MySQL? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on PHP Connections and Query Execution in MySQL. Clear explanations and tutorial exercises are provi... 2017-11-25, 4844🔥, 0💬

GO - Sending a Statement Batch from "sqlcmd" in SQL Server
How To Use GO Command in "sqlcmd" in SQL Server? "sqlcmd" is a command line client application to run Transact-SQL statements on a target SQL Server. When "sqlcmd" is started and connected to a SQL Server, it will start a new batch and prompt you to enter the first statement of the batch. You can en... 2016-12-04, 4843🔥, 0💬

Updating Multiple Rows with One UPDATE Statement in SQL Server
How To Update Multiple Rows with One UPDATE Statement in SQL Server? If the WHERE clause in an UPDATE statement matches multiple rows, the SET clause will be applied to all matched rows. This rule allows you to update values on multiple rows in a single UPDATE statement. Here is a good example: SELE... 2016-11-02, 4840🔥, 0💬

Getting Year, Month and Day Out of DATETIME Values in SQL Server
How To Get Year, Month and Day Out of DATETIME Values in SQL Server Transact-SQL? You can use DATEPART() to get any part of the DATETIME value. But to get year, month and day, you can use 3 specific functions: YEAR(), MONTH() and DAY(). These functions are equivalent to DATEPART() as: YEAR(date) = D... 2017-02-14, 4837🔥, 0💬

Generating CREATE VIEW Scripts on Existing Views in SQL Server
How To Generate CREATE VIEW Script on an Existing View in SQL Server? If you want to know how an existing view was created, you can use SQL Server Management Studio to automatically generate a "CREATE VIEW" script The following tutorial shows you how to do this: 1. Run SQL Server Management Studio a... 2016-11-05, 4811🔥, 0💬

CONVERT() - Converting Character Strings to Numeric Values in SQL Server
How To Convert Character Strings into Numeric Values in SQL Server Transact-SQL? Sometimes you need to convert numeric values enclosed in character strings back to numeric values by using the CONVERT() function. When converting character strings to values with CONVERT(), you need to remember two rul... 2017-03-22, 4774🔥, 0💬

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General MySQL Oracle SQL Server