General MySQL Oracle SQL Server

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Using Group Functions in the ORDER BY Clause in SQL Server
Can Group Functions Be Used in the ORDER BY Clause in SQL Server? 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 the maximum "counts" in each group, determined by a unique combination of tag and ye... 2016-10-25, 2049🔥, 0💬

ntwdblib.dll - SQL Server Client Library DLL
What Is Wrong with SQL Server Client Library DLL, ntwdblib.dll? The second requirement to access SQL Server with PHP scripts is the SQL Server Client Library DLL, ntwdblib.dll. The good news is that the Windows binary version of PHP 5.2.3 has ntwdblib.dll included in the PHP home directory. But the ... 2024-04-14, 2048🔥, 0💬

SQL Server FAQs - PHP ODBC Functions - Connection and Query Execution
A collection of 14 FAQs on using PHP ODBC functions to connect to SQL Server databases. Clear explanations and tutorial exercises are provided on testing ODBC DSN settings; creating connection to a SQL Server through a DSN; executing SQL statements; looping through result set; Executing prepared sta... 2024-03-17, 2044🔥, 0💬

PHP ODBC - Including Text Values in SQL Statements
PHP ODBC - How To Include Text Values in SQL Statements? Text values in SQL statements should be quoted with single quotes ('). If the text value contains a single quote ('), it should be protected by replacing it with two single quotes (''). In SQL language syntax, two single quotes represents one ... 2024-05-05, 2043🔥, 0💬

HAVING - Apply Filtering Criteria at Group Level in SQL Server
How To Apply Filtering Criteria at Group Level with The HAVING Clause in SQL Server? Let's say you have divided the query output into multiple groups with the GROUP BY clause. Now you are only interested in some of the groups, not all the groups. If you want to filter out some groups from the query,... 2016-10-25, 2043🔥, 0💬

Creating a New Table in a Given Schema in SQL Server
How To Create a New Table in a Given Schema in SQL Server? When you create a new table, you can specify in which schema you want this table to be located by prefixing the table name with the schema name. In the tutorial example below, a new table "test" is created in schema "fyi": USE FyiCenterData;... 2016-10-22, 2035🔥, 0💬

PHP MSSQL - mssql_rows_affected() - Number of Affected Rows
PHP MSSQL - How To Get the Number of Affected Rows? If you insert multiple rows with a single INSERT statement, you can use the mssql_rows_affected() function to find out how many rows were inserted. mssql_rows_affected($connectio n)returns the number of affected rows of the last INSET, UPDATE or DE... 2024-02-28, 2034🔥, 0💬

Simplest Way To Create New Databases in SQL Server
What is the simplest way to create a new database in SQL Server? The simplest way to create a new database is to use the "CREATE DATABASE" statement with this syntax: CREATE DATABASE database_name For example, run this statement: CREATE DATABASE FyiCenterData GO A new database called "FyiCenterData"... 2016-11-24, 2034🔥, 0💬

Basic Features of a Trigger in SQL Server
What Are the Basic Features of a Trigger in SQL Server? Since a SQL Server trigger is a really an event handler, it has the following basic features similar to event handlers in other programming languages: Event Type - It must be declared to handle a specific event, like a DELETE event. Object Scop... 2016-10-25, 2034🔥, 0💬

What Is a Schema in SQL Server 2005 in SQL Server
What Is a Schema in SQL Server 2005 in SQL Server? A schema is a container of database objects with the following interesting related rules: A schema may contain different object types, like tables, indexes, views, procedures, functions, etc. A database user can be assigned with a default schema. Ob... 2016-10-22, 2034🔥, 0💬

Providing Column Names in INSERT Statements in SQL Server
How to provide column names in INSERT Statements in SQL Server? 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 is om... 2016-11-02, 2033🔥, 0💬

Group Functions in Query Statements in SQL Server
What Are Group Functions in Query Statements in SQL Server? Group functions are functions applied to a group of rows. Examples of group functions are: COUNT(*) - Returns the number of rows in the group. MIN(exp) - Returns the minimum value of the expression evaluated on each row of the group. MAX(ex... 2016-10-25, 2033🔥, 0💬

Turning on the MSSQL API Module
How to Turn on the MSSQL API Module? If you want to access SQL Server database with PHP scripts, the first thing you need to do is to turn on the MSSQL API Module as shown in this tutorial: 1. Prepare a single line script to test the MSSQL API Module: &lt;?php mssql_connect('LOCALHOST','sa' ,'FYI... 2024-04-14, 2031🔥, 0💬

"TOP" - Return the Top 5 Rows from a SELECT Query in SQL Server
How To Return the Top 5 Rows from a SELECT Query in SQL Server? If you want the query to return only the first 5 rows, you can use the "TOP 5" clause. The TOP clause takes one parameter to indicate how many top rows to return. The following statements returns the first 5 rows and 3 rows from the fyi... 2016-10-29, 2031🔥, 0💬

DROP INDEX - Removing Existing Indexes in SQL Server
How To Drop Existing Indexes in SQL Server? For some reason, if you want remove an existing index, you can use the DROP INDEX statement with following syntax: CREATE INDEX table_name.index_name The tutorial exercise below shows you how to remove the index "fyi_links_id": USE FyiCenterData; GO SELECT... 2016-11-15, 2030🔥, 0💬

PHP ODBC - Updating Existing Rows in a Table
PHP ODBC - How To Update Existing Rows in a Table? Updating existing rows in a table requires to run the UPDATE statement with a WHERE clause to identify the row. The following sample script updates one row with two new values: &lt;?php $con = odbc_connect('FYI_SQL_SERVER', 'sa','FYIcenter');$sq... 2024-05-29, 2026🔥, 0💬

Returning Result from Query with ODBC Connection
How To Receive Returning Result from a Query? When you execute a SQL SELECT statement with the odbc_exec() function, you can capture the returning result with a result set object with the following syntax: $result_set = odbc_exec($sql_statement); #- The returning value could be a Boolean value FALSE... 2024-07-17, 2022🔥, 1💬

DROP VIEW - Deleting Existing Views in SQL Server
How To Drop Existing Views from a Database in SQL Server? If you don't need a specific view any more, you can use the DROP VIEW statement to delete it from the database. The following tutorial exercise shows you how to delete the view, fyi_links_view: USE FyiCenterData; GO SELECT * FROM sys.views; G... 2016-11-05, 2021🔥, 0💬

Writing Inner Joins with the WHERE Clause in SQL Server
How To Write an Inner Join with the WHERE Clause in SQL Server? If you don't want to use the INNER JOIN ... ON clause to write an inner join, you can put the join condition in the WHERE clause as shown in the following query example: SELECT l.id, l.url, r.comment FROM fyi_links l, fyi_rates r WHERE ... 2016-10-29, 2020🔥, 0💬

mssql_close() - Disconnecting from a SQL Server
How To Disconnect from a SQL Server using mssql_close()? When you call mssql_connect(), it will return an object representing the connection to the SQL Server. This connection object will be used by subsequent MSSQL function calls. When you are done with this connection, you should close it to free ... 2024-04-07, 2018🔥, 0💬

What Are Views in SQL Server
What Are Views in SQL Server? A view is a database object that represents the data in one or more tables in the same structure as a separate table. Here are some basic rules about views: Tables store real data. Views do not store real data. Views must have underlying tables to provide data. Each vie... 2016-11-08, 2018🔥, 0💬

Commonly Used ODBC Functions in PHP
What Are Commonly Used ODBC Functions in PHP? If you look at the PHP 5 manual, you will see a group of functions listed under the ODBC Functions (Unified) section. The commonly used ODBC functions are: odbc_connect � Establish an OBDC connection. odbc_data_source � Returns information about a curren... 2024-03-17, 2017🔥, 0💬

Assigning NULL Values to Variables or Columns in SQL Server
How To Assign NULL Values to Variables or Columns in SQL Server Transact-SQL? The rule for assigning NULL values to variables or table columns is simple: Use keyword "NULL" directly as normal values. "NULL" can be used in SET statements to assign NULL values to variables. "NULL" can be used in SET c... 2017-02-05, 2015🔥, 0💬

What Are Triggers in SQL Server
What Are Triggers in SQL Server? A trigger is a special kind of stored procedure that automatically executes when an event occurs in the database server. A trigger is really an event handler. SQL Server allows users to create triggers (event handlers) for 3 types of events: DML Event - Occurs when a... 2016-10-25, 2015🔥, 0💬

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General MySQL Oracle SQL Server