General MySQL Oracle SQL Server

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Parameter Modes Supported by PL/SQL in Oracle
What Are the Parameter Modes Supported by PL/SQL in Oracle? PL/SQL supports 3 parameter modes on procedure/function parameters: IN: This is the default mode. IN parameters allow the calling code to pass values into the procedure or function. OUT: OUT parameters allow the procedure or function to pas... 2018-10-19, 3081🔥, 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, 3081🔥, 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, 3079🔥, 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, 3078🔥, 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, 3078🔥, 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, 3075🔥, 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, 3075🔥, 0💬

What Is MyISAM in MySQL
What Is MyISAM in MySQL? MyISAM is a storage engine used as the default storage engine for MySQL database. MyISAM is based on the ISAM (Indexed Sequential Access Method) concept and offers fast data storage and retrieval. But it is not transaction safe.   ⇒ What Is InnoDB in MySQL ⇐ What Is ISAM in... 2017-07-03, 3075🔥, 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, 3075🔥, 0💬

What Is a Stored Procedure in Oracle
What Is a Stored Program Unit in Oracle? A stored program unit, or procedure, is a named block of codes which: Has a name. Can take parameters, and can return values. Is stored in the data dictionary. Can be called by many users.   ⇒ Create a Simple Stored Procedure in Oracle ⇐ Run the Anonymous Bl... 2019-03-20, 3073🔥, 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, 3072🔥, 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, 3071🔥, 0💬

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, 3071🔥, 0💬

Remove Data Files before Opening a Database in Oracle
How Remove Data Files before Opening a Database in Oracle? Let's say you have a corrupted data file or lost a data file. Oracle can mount the database. But it will not open the database. What you can do is to set the bad data file as offline before opening the database. The tutorial exercise shows y... 2019-04-09, 3070🔥, 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, 3070🔥, 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, 3070🔥, 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, 3066🔥, 0💬

Date/Time Data Type Comparison in SQL Server Transact-SQL
What are differences between date and time data types in SQL Server Transact-SQL? I want to compare of date and time data types? Here is a comparison table of all date and time data types supported in SQL Server Transact-SQL: Data type Storage size Precision Default Format / (bytes) Value range ----... 2017-02-25, 3066🔥, 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, 3066🔥, 0💬

Exact Numeric Data Types in SQL Server Transact-SQL
What are exact numeric data types supported in SQL Server Transact-SQL? Exact numeric data types are used to hold numeric values truncated to a specific precision and scale. There are 8 different exact numeric data types supported in SQL Server Transact-SQL: 1. BIGINT - Used to hold big integers wit... 2017-04-22, 3065🔥, 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, 3063🔥, 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, 3063🔥, 0💬

Managing Tables and Columns in SQL Server
Where to find answers to frequently asked questions on Managing Tables and Columns in SQL Server? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on Managing Tables and Columns in SQL Server. Clear answers are provided with tutorial exercises on crea... 2016-11-20, 3063🔥, 0💬

Extract Unit Values from a Date and Time in MySQL
How To Extract a Unit Value from a Date and Time in MySQL? If you want to extract a specific date or time unit value out of a date or a time, you can use the EXTRACT(unit FROM expression) function. The tutorial exercise below gives you some good examples: ELECT EXTRACT(DAY FROM NOW()) FROM DUAL; 28 ... 2018-03-13, 3061🔥, 0💬

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General MySQL Oracle SQL Server