General MySQL Oracle SQL Server

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SESSION_USER() - Synonym for USER()
What's the difference between SESSION_USER() and USER() functions? SESSION_USER() is a synonym for the USER() function. Related MySQL functions: USER() - Login Name of Current User SESSION_USER() - Synonym for USER() SYSTEM_USER() - Synonym for USER() CURRENT_USER() - Authentication Name of Current ... 2025-01-07, 2410🔥, 0💬

Assign Field Values into RECORD Variables in Oracle
How To Assign Values to Data Fields in RECORD Variables in Oracle? If a variable is a RECORD variable, you can assign values to its data fields by using fields names prefixed with variable name as "variable.field_name". Here is a sample script assigning values to data fields of RECORD variables: CRE... 2018-09-01, 2405🔥, 0💬

Filtering Out Duplications in the Returning Rows in SQL Server
How To Filter Out Duplications in the Returning Rows in SQL Server? If there are duplications in the returning rows, and you want to remove the duplications, you can use the keyword DISTINCT in the SELECT clause. The DISTINCT applies to the combination of all data fields specified in the SELECT clau... 2016-10-26, 2401🔥, 0💬

Adding More Test Data for Query Statements in SQL Server
How To Add More Data to the Testing Table in SQL Server? If you want to continue with other tutorial exercises in this FAQ collection, you need to add more data to the testing table. Follow the script below to add a new column and more rows: ALTER TABLE fyi_links ADD tag VARCHAR(8) GO UPDATE fyi_lin... 2016-10-26, 2400🔥, 0💬

Using Group Functions in the ORDER BY Clause in MySQL
Can Group Functions Be Used in the ORDER BY Clause in MySQL? If the query output is aggregated as groups, you can sort the groups by using group functions in the ORDER BY clause. The following statement returns how many links were created in each year in each tag. The group output is sorted by the c... 2017-12-31, 2395🔥, 0💬

mssql_get_last_message() - Retrieving Error Messages
How To Retrieve Error Messages using mssql_get_last_message()? When you call mssql_query() to execute a SQL statement, and the execution failed on the SQL Server, you can use mssql_get_last_message() function to retrieve the error messages. The tutorial script below shows you a good example: &lt... 2024-04-07, 2393🔥, 0💬

odbc_data_source() - Listing All DSN Entries
How To List All DSN Entries on Your Local Machine using odbc_data_source()? If you are interested to know what DSN entries are available on your local machine, you can use odbc_data_source($con, SQL_FETCH_FIRST) and odbc_data_source($con, SQL_FETCH_NEXT) in a loop to list all DSN entries defined on ... 2024-07-11, 2392🔥, 0💬

Creating a Simple Table to Test Triggers in SQL Server
How To Create a Simple Table to Test Triggers in SQL Server? If you want to follow other tutorial examples included in this collection, you need to run this SQL script to create a simple table called fyi_users: USE FyiCenterData; GO DROP TABLE fyi_users; GO CREATE TABLE fyi_users ( id INTEGER IDENTI... 2016-10-25, 2390🔥, 0💬

PHP MSSQL - Creating a New Table
PHP MSSQL - How To Create a New Table? If you want to create a table in the SQL Server database, you can run the CREATE TABLE SQL statement using the mssql_query() function, as shown in the following sample script: &lt;?php $con = mssql_connect('LOCALHOST','sa' ,'FYIcenter');mssql_select_db('Fyi... 2024-03-07, 2385🔥, 0💬

PHP ODBC - Computing Date and Time Differences
PHP ODBC - How To Display a Past Time in Days, Hours and Minutes? You have seen a lots of Websites are displaying past times in days, hours and minutes. If you want to do this yourself, you can use the DATEDIFF() SQL function The following tutorial exercise shows you how to use DATEDIFF() to present... 2024-05-05, 2383🔥, 0💬

Security Model Used in SQL Server 2005 in SQL Server
What Is the Security Model Used in SQL Server 2005 in SQL Server? SQL Server 2005 uses a very standard security model involves 3 concepts: Securables - Entities representing resources that need to be secured. For example, a database table is a securable. Principals - Entities representing users that... 2016-10-20, 2383🔥, 0💬

odbc_connect() - Connecting to a SQL Server through an ODBC DSN
How To Connect to a SQL Server using odbc_connect()? If you have an ODBC DSN (Data Source Name) created linking to a SQL Server, you are ready to connect to the SQL Server through the DSN with ODBC functions. There is no changes needed in the php.ini configuration file. The tutorial script below sho... 2024-07-11, 2382🔥, 0💬

Inserting Rows with a SELECT Statement in MySQL
How To Insert Multiple Rows with a SELECT Statement in MySQL? If want to insert rows into a table based on data rows from other tables, you can use a sub-query inside the INSERT statement as shown in the following script example: &lt;?php include "mysql_connection.php"; $sql = "INSERT INTO fyi_l... 2017-09-20, 2382🔥, 0💬

Testing ODBC DSN Connection Settings
How To Test ODBC DSN Connection Settings? Assuming you have followed other FYIcenter.com tutorials and created an ODBC DSN called "FYI_SQL_SERVER", and planning to use it your PHP scripts, you should test this ODBC connection first as shown in this tutorial: 1. Go to Control Panel &gt; Administr... 2024-07-11, 2381🔥, 0💬

NULL Values Involved in String Operations in SQL Server
What Happens If NULL Values Are Involved in String Operations in SQL Server Transact-SQL? If NULL values are involved in string operations, the result will be string NULL values. The following tutorial script shows you some good examples: SELECT 'FyiCenter'+NULL; GO ---------- NULL SELECT LEN(NULL);... 2017-02-05, 2378🔥, 0💬

PHP MSSQL - Inserting Data into an Existing Table
PHP MSSQL - How To Insert Data into an Existing Table? If you want to insert a row of data into an existing table, you can use the INSERT INTO statement as shown in the following sample script: &lt;?php $con = mssql_connect('LOCALHOST','sa' ,'FYIcenter');mssql_select_db('FyiCenterData ',$con); $... 2024-03-07, 2377🔥, 0💬

Turning Off PHP Warning Messages for MSSQL Connection
How To Turn Off Warning Messages during PHP Execution? If don't want see warning messages generated from the PHP engine when executing PHP scripts, you can change the error_reporting setting in the php.ini configuration file. Open php.ini and change the following lines: ;error_reporting = E_ALL &... 2024-03-23, 2372🔥, 0💬

PHP MSSQL - Inserting Data with NULL Values
PHP MSSQL - How To Insert Data with NULL Values? There are two ways to provide NULL value to a column in an INSERT statement: Include the column in the statement, but specify keyword NULL as the value. Exclude the column from the statement. The following tutorial exercise inserts two rows. Both of t... 2024-02-28, 2372🔥, 0💬

Installing DTS on Windows XP Systems
How To Install DTS (Data Transformation Services) on Windows XP Systems? SQL Server 2000 is not supported on Windows XP systems, but you can still install DTS (Data Transformation Services) as client component your XP system. This allows you to continue to use DTS with SQL Server 2005, if you don't ... 2024-01-31, 2367🔥, 0💬

"AS" - Naming Query Output Columns in SQL Server
How To Name Query Output Columns in SQL Server? Each column in the query output has a default name. If you don't like the default name, you can specify a new name for any column in the query output by using the AS clause. The following statement shows you a good example: SELECT tag AS Category, YEAR... 2016-10-29, 2353🔥, 0💬

Returning Result from Query with MSSQL Connection
How To Receive Returning Result from a Query? When you execute a SQL SELECT statement with the mssql_query() function, you can capture the returning result with a result set object with the following syntax: $result_set = mssql_query($sql_statement); #- The returning value could be a Boolean value F... 2024-03-23, 2351🔥, 0💬

PHP ODBC - Returning Result Set Objects
PHP ODBC - What Is a Result Set Object Returned by odbc_exec()? A result set object is a logical representation of data rows returned by odbc_exec() function on SELECT statements. Every result set object has an internal pointer used to identify the current row in the result set. Once you get a resul... 2024-05-29, 2346🔥, 0💬

mssql_result() - Retrieve Field Values
How To Retrieve Field Values using mssql_result()? Once the result set is captured in an object, you can think of it as a "table" with rows and columns (fields). You can use mssql_result() to retrieve the value of any given row and column (field) with this formats: $value = mssql_result($res, $row, ... 2024-03-23, 2342🔥, 0💬

Starting DTS Wizard
How To Start DTS Wizard? If you have installed DTS as part of the SQL Server 2000 Enterprise Manager tool properly, you should be able to start the DTS Wizard from the start menu: Click Start &gt; All Programs &gt; SQL Server &gt; Import and Export Data. The DST Wizard window will show u... 2024-01-31, 2340🔥, 0💬

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General MySQL Oracle SQL Server