General MySQL Oracle SQL Server

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Attaching AdventureWorksLT Physical Files to the Server in SQL Server
How to attach AdventureWorksLT physical files to the server in SQL Server? After installed the sample database AdventureWorksLT, you need to attach it to your SQL server to make it available by follow this tutorial: EXEC sp_attach_db @dbname=N'AdventureWorksLT', @filename1=N'C:\Program Files\Microso... 2016-12-02, 3055🔥, 0💬

What Is a RECORD in PL/SQL in Oracle
What Is a RECORD in PL/SQL in Oracle? RECORD is a composite data type in PL/SQL. It can have many fields representing data elements with different data types. Variables of RECORD type can be designed to hold data from database table rows. To use RECORD data type, you need to define a specific RECORD... 2018-09-13, 3054🔥, 0💬

Using ORDER BY with UNION Operators in SQL Server
How To Use ORDER BY with UNION Operators in SQL Server? If you need to sort the output from two queries grouped together with a UNION operator, you need to apply the ORDER BY clause at the group level, not at the subquery level. Note that SQL Server and MySQL react differently to the ORDER BY clause... 2016-10-26, 3053🔥, 0💬

Date and Time Intervals in MySQL
What Are Date and Time Intervals in MySQL? A date and time interval is special value to be used to increment or decrement a date or a time at a given date or time unit. A data and time interval should be expression in the format of "INTERVAL expression unit", where "unit" and "expression" should fol... 2017-12-26, 3052🔥, 0💬

Dividing Query Output into Groups in MySQL
How To Divide Query Output into Groups in MySQL? You can divide query output into multiple groups with the GROUP BY clause. It allows you specify a column as the grouping criteria, so that rows with the same value in that column will be considered as a single group. When the GROUP BY clause is speci... 2017-10-16, 3052🔥, 0💬

Query with an Inner Join in Oracle
How To Write a Query with an Inner Join in Oracle? If you want to query from two tables with an inner join, you can use the INNER JOIN ... ON clause in the FROM clause. The following query returns output with an inner join from two tables: employees and departments. The join condition is that the de... 2019-10-27, 3051🔥, 0💬

Call a Stored Function in Oracle
How To Call a Stored Function in Oracle? A stored function can be called as part of expression in any PL/SQL statement. One simplest way to call a stored function is to a dummy SELECT statement as shown in the following tutorial script using SQL*Plus: SQL&gt; CREATE OR REPLACE FUNCTION GET_SITE ... 2018-10-26, 3051🔥, 0💬

What Is a Cursor Variable in Oracle
What Is a Cursor Variable in Oracle? A cursor variable is a variable of a specific REF CURSOR data type, which is a pointer to a data structure resource connects to query statement result, similar to the CURSOR data type.. The advantage of using cursor variables is that cursor variables can be used ... 2018-04-07, 3048🔥, 0💬

Boolean Values and Logical Operations in SQL Server Transact-SQL
Where to find answers to frequently asked questions on Boolean Values and Logical Operations in SQL Server Transact-SQL? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on Boolean Values and Logical Operations in SQL Server Transact-SQL. Clear answer... 2017-01-29, 3047🔥, 0💬

Clean Up When CREATE DATABASE Failed in Oracle
How To Do Clean Up If CREATE DATABASE Failed in Oracle? To better organize data files, you should create a dedicated directory for each Oracle database. This can be done by using Windows file explorer to create the \oraclexe\oradata\fyi\ directory. Try the CREATE DATABASE statement again, when you h... 2019-03-27, 3046🔥, 0💬

Show Installed Oracle ODBC Drivers in Oracle
How To Find Out What Oracle ODBC Drivers Are Installed in Oracle? To find out what Oracle ODBC drivers are installed on your Windows system, you can use the ODBC manager to look at them: Go to Control Panel. Go to Administrative Tools. Run Data Sources (ODBC). Go to System DSN tab. Click the Add but... 2016-10-15, 3045🔥, 0💬

Systems Supported by 10g XE Server in Oracle
What Operating Systems Are Supported by Oracle Database 10g XE in Oracle? Oracle Database 10g Express Edition is available for two types of operating Systems: Linux x86 - Debian, Mandriva, Novell, Red Hat and Ubuntu Microsoft Windows   ⇒ Download Oracle Database 10g XE in Oracle ⇐ Limitations of Or... 2020-05-05, 3043🔥, 0💬

Run CREATE DATABASE Statement in Oracle
How To Run CREATE DATABASE Statement in Oracle? This is Step 7. Oracle Administrator Guide provided a sample CREATE DATABASE statement. But it is a long statement. You can modify and same it in a file, $ORACLE_HOME/configscripts/cre ate_database_fyi.sql,and run the file within SQL*Plus. Here is a co... 2018-05-08, 3043🔥, 0💬

Revoking User Privileges in MySQL
How To Revoke User Privileges in MySQL? If your want remove some granted user privileges, you can use the "REVOKE privilegeName ..." command. You can only revoke privileges in the same way as they were granted. For example, you can not revoke a privilege on a specific database, if that privilege was... 2017-08-21, 3043🔥, 0💬

Generating CREATE FUNCTION Scripts on Existing Functions in SQL Server
How To Generate CREATE FUNCTION Script on an Existing Function in SQL Server Transact-SQL? If you want to know how an existing user defined function was created, you can use SQL Server Management Studio to automatically generate a "CREATE FUNCTION" script The following tutorial shows you how to do t... 2016-12-18, 3043🔥, 0💬

File Formats Supported on Export Data in Oracle
How Many File Formats Are Supported to Export Data in Oracle? Oracle SQL Developer can allow to export table data into files in the following formats: TXT - Tab delimited fields file format. CSV - Comma Separated Values (CSV) file format. LOADER - File format used by SQL*Loader. XML - XML file forma... 2019-01-26, 3042🔥, 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, 3042🔥, 0💬

Recovered Tables with Indexes in Oracle
What Happens to the Indexes If a Table Is Recovered in Oracle? If you dropped a table, and recovered it back from the recycle bin, what happens to its indexes? Are all indexes recovered back automatically? The answer is that all indexes will be recovered, if you recover a dropped table from the recy... 2019-04-22, 3041🔥, 0💬

Managing User Accounts and Access Privileges in MySQL
Where to find answers to frequently asked questions on Managing User Accounts and Access Privileges in MySQL? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on Managing User Accounts and Access Privileges in MySQL. Clear answers are provided with tu... 2017-12-13, 3041🔥, 0💬

Privilege to Query Tables in Another Schema in Oracle
What Privilege Is Needed for a User to Query Tables in Another Schema in Oracle? For a user to run queries (SELECT statements) on tables of someone else's schema, he/she needs the SELECT ANY TABLE privilege. The following tutorial exercise gives you a good example of granting "dev" to query tables i... 2019-06-11, 3040🔥, 0💬

Downloading and Installing SQL Server 2005 Books Online in SQL Server
How to download and install SQL Server 2005 Books Online in SQL Server? 1. Go to the SQL Server 2005 Books Online download page . 2. Click the download button, the File Download box shows up. Save the download file to c:\temp. 3. Double click on the downloaded file: c:\temp\SqlServer2K5_BOL_Feb20 07.... 2016-12-04, 3040🔥, 0💬

Tables Using BDB Storage Engine in MySQL
How To Create a New Table Using the BDB Storage Engine in MySQL? BDB (BerkeleyDB) storage engine was originally developed at U.C. Berkeley. It is now maintained by Sleepycat Software, Inc., which is an Oracle company now. BDB is transaction safe, and has been used in products from many companies, li... 2017-08-13, 3039🔥, 0💬

Adding and Removing Days on Date and Time Values in SQL Server
How To Add or Remove Days on Date and Time Values in SQL Server Transact-SQL? SQL Server 2005 only support two operators on data and time values: + (Add): Adding days to a date and time value. - (Subtract): Removing days from a date and time value. Note that to add or subtract days on a date and tim... 2017-02-22, 3038🔥, 0💬

Shutdown 10g XE Server from Commmand Line in Oracle
How To Shutdown Your 10g XE Server from Command Line in Oracle? You can shutdown your 10g XE server from command line by: Open a command line window. Change directory to \oraclexe\app\oracle\product\1 0.2.0\server\BIN\.Run StopDB.bat. The batch file StopDB.bat contains: net stop OracleServiceXE   ⇒ ... 2020-10-10, 3037🔥, 0💬

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General MySQL Oracle SQL Server