General MySQL Oracle SQL Server

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"CREATE DATABASE" Statement - Creating New Databases in SQL Server
How to create new databases with "CREATE DATABASE" statements in SQL Server? This is the first tutorial of a quick lesson on creating database objects with Transact-SQL statements. This lesson shows you how to create a database, create a table in the database, and then access and change the data in ... 2016-12-02, 2903🔥, 0💬

ANSI Data Types in Oracle
What Are the ANSI Data Types Supported in Oracle in Oracle? The following ANSI data types are supported in Oracle: CHARACTER(n) / CHAR(n) CHARACTER VARYING(n) / CHAR VARYING(n) NATIONAL CHARACTER(n) / NATIONAL CHAR(n) / NCHAR(n) NATIONAL CHARACTER VARYING(n) / NATIONAL CHAR VARYING(n) / NCHAR VARYIN... 2020-04-14, 2902🔥, 0💬

Divide Query Output into Groups in Oracle
How To Divide Query Output into Groups in Oracle? 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 the column will be considered as a single group. When the GROUP BY clause is speci... 2019-11-21, 2902🔥, 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, 2897🔥, 0💬

Connecting to MySQL Server on a Specific Port in MySQL
How To Connect to MySQL Server on a Different Port in MySQL? If your MySQL server is listening on port number different than 3306, you need to specify "--port=portNumber" option to any client program that needs to connect to the server. The tutorial exercise shows you how to connect "mysql" to start... 2017-11-25, 2897🔥, 0💬

"sp_help" - Getting a List of Columns in a View in SQL Server
How To Get a List of Columns in a View using the "sp_help" Stored Procedure in SQL Server? Another way to get a list of columns from a view is to use the "sp_help" stored procedure. "sp_help" returns more than just a list of columns. It returns: the view information, the column information, the iden... 2016-11-05, 2897🔥, 0💬

Instance Settings Stored in SPFile in Oracle
Where Are the Settings Stored for Each Instance in Oracle? Settings for each instance are stored in a file called Server Parameter File (SPFile). Oracle supports two types of parameter files, Text type, and Binary type. parameter files should be located in $ORACLE_HOME\database directory. A paramete... 2020-09-15, 2896🔥, 0💬

Select Some Rows from a Table in Oracle
How To Select Some Rows from a Table in Oracle? If you don't want select all rows from a table, you can specify a WHERE clause to tell the query to return only the rows that meets the condition defined in the WHERE clause. The following select statement only returns rows that has department name sta... 2019-12-19, 2893🔥, 0💬

Run SQL Statement through Web UI in Oracle
How To Run SQL Statements through the Web Interface in Oracle? If you don't like the command line interface offered by SQL*Plus, you can use the Web interface to run SQL statements. Here is how: Open your Web browser to http://localhost:8080/apex/ Log in to the server with the predefined sample user... 2019-05-01, 2892🔥, 0💬

Enter Comments in PL/SQL in Oracle
How To Enter Comments in PL/SQL in Oracle? There are two ways to enter comments into PL/SQL codes: SQL Statement Style: Starts you comment any where in the line but prefixed with '--'. The comment ends at the end of the line. C Language Style: Starts you comment any where in the line with '/*' and e... 2018-12-26, 2891🔥, 0💬

What Is "mysqladmin" Command in MySQL
What Is "mysqladmin" in MySQL? "mysqladmin" is a command-line interface for administrators to perform server administration tasks. It support a number of commonly used commands like: "mysqladmin shutdown" - Shuts down the server. "mysqladmin ping" - Checks if the server is alive or not. "mysqladmin ... 2018-06-01, 2888🔥, 0💬

Types of PL/SQL Code Blocks in Oracle
What Are the Types PL/SQL Code Blocks in Oracle? There are 3 types of PL/SQL code blocks: Anonymous Block - A block of codes with no name. It may contain a declaration part, an execution part, and exception handlers. Stored Program Unit - A block of codes with a name. It is similar to an anonymous b... 2018-10-30, 2886🔥, 0💬

Ways to Start a New Transaction in Oracle
How To Start a New Transaction in Oracle? There is no SQL statement to explicitly start a new transaction. Oracle server implicitly starts a new transaction with the following two conditions: The first executable statement of a new user session will automatically start a new transaction. The first e... 2019-09-16, 2885🔥, 0💬

Create a New Table in Oracle
How To Create a New Table in Oracle? If you want to create a new table in your own schema, you can log into the server with your account, and use the CREATE TABLE statement. The following script shows you how to create a table: &gt;.\bin\sqlplus /nolog SQL&gt; connect HR/fyicenter Connected.... 2020-02-29, 2884🔥, 0💬

Returning Query Output in XML Format in MySQL
How To Return Query Output in XML Format in MySQL? By default, "mysql" returns query output in text table format. If you want to receive query output in XML format, you need to use the "-X" command option. Here is a good tutorial exercise: &gt;cd \mysql\bin &gt;mysql -u root -X test mysql&am... 2018-04-21, 2883🔥, 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, 2881🔥, 0💬

User Privilege Tables in MySQL
Where Are User Privileges Stored on the Server in MySQL? MySQL server has a system database, which hosts a number of system tables to system related information like user privileges. Depending on the scope levels, granted user privileges are stored in different tables: "mysql.user" - Stores privileg... 2017-12-09, 2880🔥, 0💬

Passing Values to Stored Procedure Parameters in SQL Server
How To Provide Values to Stored Procedure Parameters in SQL Server Transact-SQL? If a stored procedure is created with parameters, you need pass values to those parameters when calling the stored procedure with one of two formats listed below: -- Passing values only EXEC procedure_name value_1, valu... 2016-12-28, 2879🔥, 0💬

Start and End of Statement in SQL Server Transact-SQL
How to start and end a statement in SQL Server Transact-SQL? Here are some simple rules about writing statements in SQL Server Transact-SQL: A Transact-SQL statement must be started with a pre-defined statement keyword. A Transact-SQL statement must be ended with a new line (/n) or a semicolon (;) c... 2017-05-29, 2878🔥, 0💬

"sp_columns" - Getting a List of Columns in a Table in SQL Server
How To Get a List of Columns using the "sp_columns" Stored Procedure in SQL Server? If you have an existing table, but you don't remember what are the columns defined in the table, you can use the "sp_columns" stored procedure to get a list of all columns of the specified table. The following tutori... 2016-11-17, 2878🔥, 0💬

Oracle Data File - Unit of Physical Storage in Oracle
What Is an Oracle Data File in Oracle? An Oracle data file is a big unit of physical storage in the OS file system. One or many Oracle data files are organized together to provide physical storage to a single Oracle tablespace.   ⇒ Relations between a Tablespace and Data Files in Oracle ⇐ Oracle Ta... 2019-01-20, 2877🔥, 0💬

Difference between CHAR and NCHAR in MySQL
What Are the Differences between CHAR and NCHAR in MySQL? Both CHAR and NCHAR are fixed length string data types. But they have the following differences: CHAR's full name is CHARACTER. NCHAR's full name is NATIONAL CHARACTER. By default, CHAR uses ASCII character set. So 1 character is always store... 2018-01-19, 2874🔥, 0💬

Change User Password in Oracle
How To Change User Password in Oracle? If you want to change a user's password, you can log in as SYSTEM and use the ALTER USER command as shown in the following example: &gt;.\bin\sqlplus /nolog SQL&gt; connect SYSTEM/fyicenter Connected. SQL&gt; ALTER USER DEV IDENTIFIED BY beginner; U... 2019-07-09, 2872🔥, 0💬

Finding the Login Name Linked to a Given User Name in SQL Server
How To Find the Login Name Linked to a Given User Name in SQL Server? If you know a user name in a database and you want to find out which login name is linked this user name, you need to check the Security ID (SID) of the user name based on the following rules: Each login name is associated a uniqu... 2017-08-25, 2872🔥, 0💬

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General MySQL Oracle SQL Server