General MySQL Oracle SQL Server

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Formatting Time Zone in +/-hh:mm Format in SQL Server
How To Format Time Zone in +/-hh:mm Format in SQL Server Transact-SQL? From the previous tutorial, you know how to calculate the time zone value by using GETDATE() and GETUTCDATE() functions. But how can you format that time zone value in a nice looking format like +05:45 or -04:00? Unfortunately, S... 2017-02-08, 5694🔥, 0💬

General Questions on Microsoft SQL Server Transact-SQL
Where to find answers to frequently asked questions in general areas of Microsoft SQL Server Transact-SQL? I am new to Transact-SQL. Here is a list of frequently asked questions and their answers compiled by FYIcenter.com team in general areas of Microsoft SQL Server Transact-SQL: What Is SQL Langua... 2017-06-16, 5658🔥, 0💬

PL/SQL Language Case Insensitive in Oracle
Is PL/SQL Language Case Sensitive in Oracle? PL/SQL language is not case sensitive: Reserved words are not case sensitive. For example: CASE and Case are identical. Variable names and other names are not case sensitive. For example: TOTAL_SALARY and total_salary are identical. But values in string l... 2018-12-26, 5599🔥, 0💬

Error: Lock Wait Timeout Exceeded in MySQL
What Happens to Your Transactions When ERROR 1205 Occurred in MySQL? If your transaction receives the "Lock wait timeout exceeded" - ERROR 1205, MySQL server automatically terminates your transaction and rolls back your data changes of the entire transaction. This is why the error messages tells you... 2017-04-28, 5495🔥, 0💬

Verifying a User Name with SQLCMD Tool in SQL Server
How To Verify a User name with SQLCMD Tool in SQL Server? The quickest way to verify a user name in a database is probably to use the SQLCMD tool. You can connect to the server, select the database, and check which user name is linked the current login name as shown below. Start a command window and... 2017-08-25, 5462🔥, 0💬

"GROUP BY" - Dividing Query Output into Multiple Groups in SQL Server
How To Divide Query Output into Multiple Groups with the GROUP BY Clause in SQL Server? Sometimes, you want to divide the query output into multiple groups, and apply group functions on each individual groups. Dividing query output into multiple groups can be done with the GROUP BY clause. Here is t... 2016-10-25, 5452🔥, 0💬

sqlservr.exe - Process - SQL Server (SQLEXPRESS) in SQL Server
What is sqlservr.exe - Process - SQL Server (SQLEX?PRESS) in SQL Server? Process sqlservr.exe is the Microsoft SQL Server system service installed as part of the Microsoft SQL Server 2005 Express Edition. mscorsvw.exe process and program file info: CPU usage: 00% Memory usage: 1,316K Launching metho... 2016-12-08, 5410🔥, 0💬

DATEADD() Function Usage Examples in SQL Server
How To Use DATEADD() Function in SQL Server Transact-SQL? DATEADD() is a very useful function for manipulating date and time values. The following tutorial exercise shows you some good DATEADD() usage examples: -- Incrementing 1 year on a leap date DECLARE @birth_date DATETIME; SET @birth_date = '20... 2017-02-20, 5406🔥, 0💬

WHILE ... Loops in SQL Server Transact-SQL
How to execute statements in loops in SQL Server Transact-SQL? How to use WHILE ... loops? You can use WHILE ... statements to execute statements in loops in Transact-SQL using these syntaxes: -- Loop with a single statement WHILE condition statement -- Loop with a statement block WHILE condition --... 2017-01-11, 5399🔥, 0💬

Create a Simple Stored Procedure in Oracle
How To Create a Stored Program Unit in Oracle? If you want to create a stored program unit, you can use the CREATE PROCEDURE or FUNTION statement. The example script below creates a stored program unit: SQL&gt; set serveroutput on; SQL&gt; CREATE PROCEDURE Hello AS 2 BEGIN 3 DBMS_OUTPUT.PUT_... 2019-03-20, 5317🔥, 0💬

Where Is the Export Dump File Located in Oracle
Where Is the Export Dump File Located in Oracle? If you are not specifying the dump directory and file name, the dump file will be stored in the default dump directory with the default file name. The tutorial exercise below tells you find what is your default dump directory and locate the dump file.... 2016-10-15, 5314🔥, 0💬

StartDB.bat Failed to Start the XE Instance in Oracle
What To Do If the StartDB.bat Failed to Start the XE Instance in Oracle? If StartDB.bat failed to start the XE instance, you need to try to start the instance with other approaches to get detail error messages on why the instance can not be started. One good approach to start the default instance is... 2020-09-30, 5300🔥, 0💬

Is SQL Server Transact-SQL Case Sensitive?
Is SQL Server Transact-SQL case sensitive? No. Transact-SQL is not case sensitive. Like the standard SQL, you can type in your Transact-SQL statement in upper case or lower case. However, you should use upper case for all key words in Transact-SQL statements as a best practice. The following example... 2017-06-16, 5245🔥, 0💬

Transaction Management: Commit or Rollback in MySQL
Where to find answers to frequently asked questions on Transaction Management: Commit or Rollback in MySQL? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on Transaction Management: Commit or Rollback in MySQL. Clear answers are provided with tutori... 2017-08-08, 5241🔥, 0💬

CREATE INDEX - Create a Table Index in Oracle
How To Create a Table Index in Oracle? If you have a table with a lots of rows, and you know that one of the columns will be used often a search criteria, you can add an index for that column to in improve the search performance. To add an index, you can use the CREATE INDEX statement as shown in th... 2020-02-20, 5220🔥, 0💬

Entering 0.001 Second in DATETIME in SQL Server Transact-SQL
Why I Can Not Enter 0.001 Second in DATETIME values in SQL Server Transact-SQL? If you enter milliseconds in data and time values, they will be rounded up to 10/3 millisecond increments, because DATETIME data type uses 4 bytes to store the time of the day. A 4-byte integer can only give an accuracy ... 2017-04-15, 5162🔥, 0💬

Date and Time Functions in MySQL
What Are Date and Time Functions in MySQL? MySQL offers a number of functions for date and time values: ADDDATE(date, INTERVAL expr unit) - Adding days to a date. Same as DATE_ADD(). ADDTIME(time1, time2) - Adding two time values together. CURDATE() - Returning the current date. Same as CURRENT_DATE... 2018-03-13, 5146🔥, 0💬

What Is a Parameter File in Oracle
What Is a Parameter File in Oracle? A parameter file is a file that contains a list of initialization parameters and a value for each parameter. You specify initialization parameters in a parameter file that reflect your particular installation. Oracle supports the following two types of parameter f... 2020-11-11, 5138🔥, 1💬

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Drop an Index in Oracle
How To Drop an Index in Oracle? If you don't need an existing index any more, you should delete it with the DROP INDEX statement. Here is an example SQL script: CREATE TABLE student (id NUMBER(5) PRIMARY KEY, first_name VARCHAR(80) NOT NULL, last_name VARCHAR(80) NOT NULL, birth_date DATE NOT NULL, ... 2019-04-22, 5095🔥, 0💬

Escape Special Characters in MySQL
How To Escape Special Characters in SQL statements in MySQL? There are a number of special characters that needs to be escaped (protected), if you want to include them in a character string. Here are some basic character escaping rules: The escape character (\) needs to be escaped as (\\). The singl... 2018-04-12, 5084🔥, 0💬

Running Queries with SQL Server Management Studio Express in SQL Server
How to run Queries with SQL Server Management Studio Express in SQL Server? 1. Launch and connect SQL Server Management Studio Express to the local SQL Server 2005 Express. 2. Click on the "New Query" button below the menu line. Enter the following SQL statement in the query window: SELECT 'Welcome ... 2016-12-04, 5045🔥, 0💬

Single-Byte Character Data Types in SQL Server Transact-SQL
What are single-byte character string data types supported in SQL Server Transact-SQL? Single-byte character string data types are used to hold single-byte character strings. There are 3 single-byte character string data types supported in SQL Server Transact-SQL: 1. CHAR (or CHARACTER) - Used to ho... 2017-04-08, 5043🔥, 0💬

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, 5026🔥, 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, 5020🔥, 0💬

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General MySQL Oracle SQL Server