General MySQL Oracle SQL Server

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Overflow Errors with INT Values in SQL Server Transact-SQL
What Happens If an Integer Is Too Big for INT (INTEGER) Date Type in SQL Server Transact-SQL? If you are entering an INT data type literal with representing an integer value too big for INT data type to store, the SQL Server will give you an arithmetic overflow error. The same error will happen on B... 2017-04-19, 4534🔥, 0💬

Shutdown the Server with "mysqladmin" Command in MySQL
How To Shut Down the Server with "mysqladmin" in MySQL? If you want to shut down the server with "mysqladmin", you can use the command "mysqladmin shutdown" as shown in the following tutorial example: &gt;cd \mysql\bin &gt;mysqladmin -u root shutdown If this command returns no messages, your... 2018-06-01, 4531🔥, 0💬

Input Buffer in SQL*Plus in Oracle
What Is Input Buffer in SQL*Plus in Oracle? Input buffer is a nice feature of the command-line SQL*Plus tool. It allows you to revise a multiple-line command and re-run it with a couple of simple commands. By default, input buffer is always turned on in SQL*Plus. The last SQL statement is always sto... 2020-07-15, 4527🔥, 0💬

Show Table Columns Used in an Index in Oracle
How To See the Table Columns Used in an Index in Oracle? You can a list of indexes in your schema from the USER_INDEXES view, but it will not give you the columns used in each index in the USER_INDEXES view. If you want to see the columns used in an index, you can use the USER_IND_COLUMNS view. Here... 2019-04-17, 4525🔥, 0💬

Scope Levels of User Privileges in MySQL
How Many Scope Levels Can User Privileges Apply in MySQL? MySQL supports 5 scope levels a user privilege can be granted: Global Level - A privilege granted at this level applies to all databases on the server. Privileges granted at the global level stored in "mysql.user" table. Database Level - A pr... 2017-12-09, 4515🔥, 0💬

Using INSERT, UPDATE and DELETE Statements in SQL Server
Where to find answers to frequently asked questions on Using INSERT, UPDATE and DELETE Statements in SQL Server? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on Using INSERT, UPDATE and DELETE Statements in SQL Server. Clear answers are provided w... 2016-11-03, 4507🔥, 0💬

What Is BDB in MySQL
What Is BDB (BerkeleyDB) in MySQL? BDB (BerkeleyDB) is transaction safe storage engine originally developed at U.C. Berkeley. It is now developed by Sleepycat Software, Inc. (an Oracle company now).   ⇒ What Is CSV in MySQL ⇐ What Is InnoDB in MySQL ⇑ Database Basics and Terminologies in MySQL ⇑⇑ ... 2017-07-03, 4479🔥, 0💬

Date/Time Operations and Functions in SQL Server Transact-SQL
Where to find answers to frequently asked questions on Date/Time Operations and Functions in SQL Server Transact-SQL? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on Date/Time Operations and Functions in SQL Server Transact-SQL. Clear answers are ... 2017-02-25, 4476🔥, 0💬

Rolling Back the DDL Statement in a Trigger in SQL Server
Can You Roll Back the DDL Statement in a Trigger in SQL Server? Can you roll back the DDL statement in a trigger? The answer is yes. Since the DDL statement that fires the trigger and the statements defined inside the trigger are all executed as a single statement batch, you can add a ROLLBACK state... 2016-10-22, 4469🔥, 0💬

What Is ISAM in MySQL
What Is ISAM in MySQL? ISAM (Indexed Sequential Access Method) was developed by IBM to store and retrieve data on secondary storage systems like tapes.   ⇒ What Is MyISAM in MySQL ⇐ What Is Union in MySQL ⇑ Database Basics and Terminologies in MySQL ⇑⇑ MySQL Database Tutorials 2017-07-03, 4463🔥, 0💬

Built-in Internal User Accounts in Oracle
What Are Internal User Account in Oracle? An internal user account is a system predefined user account. Oracle 10g XE comes with a number of internal accounts: SYSTEM - This is the user account that you log in with to perform all administrative functions other than starting up and shutting down the ... 2019-07-21, 4457🔥, 0💬

Using Binary Strings in Arithmetical Operations in SQL Server
Can Binary Strings Be Used in Arithmetical Operations in SQL Server Transact-SQL? Can binary strings be used in arithmetical operations? The answer is yes. But there are two simple rules you need to remember: If an arithmetical operation has one binary string operand and one integer data type operan... 2017-02-28, 4457🔥, 0💬

Turning on mysql Extension on the PHP Engine in MySQL
How To Turn on mysql Extension on the PHP Engine in MySQL? The "mysql" API extension is provided as "php_mysql.dll" for Windows system. Your PHP binary download package should have "php_mysql.dll" included. No need for another download. But you need to check the PHP configuration file, \php\php.ini,... 2017-07-30, 4431🔥, 0💬

How do I call MySQL SP from oracle using HS link ?
How do I call MySQL Stored Procedure from oracle using HS link ? HS link is correct and I can get the tables data just by adding '@' at the end of the table name ,but I can't call the SP same way ! Help please. 2022-01-24, 4430🔥, 0💬

Omitting Columns in INSERT Statements in MySQL
How To Omit Columns with Default Values in INSERT Statement in MySQL? If you don't want to specify values for columns that have default values, or you want to specify values to columns in an order different than how they are defined, you can provide a column list in the INSERT statement. If a column... 2018-01-16, 4412🔥, 0💬

DATABASE() - Name of Current Database
How to obtain the name of the current database using the DATABASE() function? DATABASE() is a MySQL built-in function that returns the name of the current database. For example: USE mysql; Database changed SELECT DATABASE(); -- +------------+ -- | DATABASE() | -- +------------+ -- | mysql | -- +----... 2025-06-18, 4403🔥, 0💬

Run SQL Commands in SQL*Plus in Oracle
How To Run SQL Commands in SQL*Plus in Oracle? If you want to run a SQL command in SQL*Plus, you need to enter the SQL command in one or more lines and terminated with (;). The tutorial exercise below shows a good example: SQL&gt; SELECT 'Welcome!' FROM DUAL; 'WELCOME -------- Welcome! SQL&g... 2020-08-03, 4382🔥, 1💬

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Define DSN with ODBC Manager in Oracle
How To Define a Data Source Name (DSN) in ODBC Manager in Oracle? DSN (Data Source Name) is an ODBC connection identifier for Windows applications. Here is how you can define a DSN on your Windows system: Go to Control Panel. Go to Administrative Tools. Run Data Sources (ODBC). Go to System DSN tab.... 2016-10-15, 4382🔥, 0💬

Relations of a User Account and a Schema in Oracle
What Is the Relation of a User Account and a Schema in Oracle? User accounts and schemas have a one-to-one relation. When you create a user, you are also implicitly creating a schema for that user. A schema is a logical container for the database objects (such as tables, views, triggers, and so on) ... 2020-11-22, 4374🔥, 0💬

CURRENT_USER() - Authentication Name of Current User
How to obtain the authentication name of the current user using the CURRENT_USER() function? CURRENT_USER() is a MySQL built-in function that returns the authentication name of the current user. The authentication name is a combination of "User" and "Host" columns in the mysql.user table and used to... 2025-06-18, 4373🔥, 0💬

Ways to Get the Current Time in MySQL
How Many Ways to Get the Current Time in MySQL? There are 8 ways to get the current time: SELECT NOW() FROM DUAL; 2006-07-01 10:02:41 SELECT CURRENT_TIME() FROM DUAL; 10:02:58 SELECT SYSDATE() FROM DUAL; 2006-07-01 10:03:21 mysql&gt; SELECT CURRENT_TIMESTAMP() FROM DUAL; 2006-07-01 10:04:03 SELE... 2018-03-13, 4361🔥, 0💬

What Is an Oracle Database in Oracle
What Is an Oracle Database in Oracle? An Oracle database is a collection of data treated as a big unit in the database server.   ⇒ What Is an Oracle Instance in Oracle ⇐ What Is Oracle in Oracle ⇑ Oracle Database Basic Concepts ⇑⇑ Oracle Database Tutorials 2020-11-11, 4360🔥, 0💬

Locks, Timeouts, and Deadlocks in MySQL
What Are Impacts on Applications from Locks, Timeouts, and DeadLocks in MySQL? If you are using transactions with REPEATABLE READ isolation level and transaction safe storage engines in your applications, data locks, lock timeouts, and dead lock detections will impact your application in a concurren... 2017-07-21, 4357🔥, 0💬

Exact Numeric Literals in SQL Server Transact-SQL
What are exact numeric literals supported in SQL Server Transact-SQL? Exact numeric literals in Transact-SQL are numbers written in standard signed decimal formats. Exact numeric literals are used to provide values to exact numeric variables or table columns like INTEGER, DECIMAL(8,2), MONEY, etc. E... 2017-05-05, 4342🔥, 0💬

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General MySQL Oracle SQL Server