General MySQL Oracle SQL Server

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mssql_fetch_array() - Looping through Result Set Objects
How To Loop through Result Set Objects using mssql_fetch_array()? If the returning output of a query statement is captured in a result set object, you can use mssql_fetch_array() to loop through each row in the output. The tutorial PHP script below shows you how to list tables in the database: &... 2024-03-23, 2471🔥, 0💬

What Is DTS
What Is DTS (Data Transformation Services)? DTS (Data Transformation Services) is a SQL Server database management wizard tool that allows you to import, export, and transform heterogeneous data. The DTS wizard tool guides you through the steps to import or export data between many popular data form... 2024-02-09, 2470🔥, 0💬

JSON_STORAGE_FREE() - Free Space in JSON Value
How to obtain the free space size in a JSON table column using the JSON_STORAGE_FREE() function? JSON_STORAGE_FREE(json) is a MySQL built-in function that returns the free space size in a JSON table column. Free space occurs when JSON table column is partially updated with less data. For example: CR... 2024-12-18, 2465🔥, 0💬

PHP ODBC - Query Multiple Tables Jointly
PHP ODBC - How To Query Multiple Tables Jointly? If you want to query information stored in multiple tables, you can use the SELECT statement with a WHERE condition to make an inner join. Assuming that you have 3 tables in a forum system: "users" for user profile, "forums" for forums information, an... 2023-12-30, 2454🔥, 0💬

SQL Server FAQs - Introduction to DTS (Data Transformation Services)
A collection of 10 FAQs on DTS (Data Transformation Services). Clear explanations and tutorial exercises are provided on using DTS to import data to SQL Server and export data from SQL Server; exporting tables to MS Excel files; importing tables from text files. Topics included in this collections: ... 2024-02-09, 2443🔥, 0💬

Data Formats Supported by DTS
What Are the Data Formats Supported by DTS? As mentioned in the DTS manual, DTS wizard support many popular data source formats: dBase - *.dbf files created by dBase, a popular database application for PCs. ODBC drivers - Any data source that configured through ODBC drivers. Microsoft Access - *.mdb... 2024-01-19, 2440🔥, 0💬

PHP ODBC - Searching Records by Keywords
PHP ODBC - How To Perform Key Word Search in Tables? The simplest way to perform key word search is to use the SELECT statement with a LIKE operator in the WHERE clause. The LIKE operator allows you to match a text field with a keyword pattern specified as '%keyword%', where (%) represents any numbe... 2024-05-05, 2428🔥, 0💬

Defining SQL Server 2005 as the DTS Data Destination
How To Define SQL Server 2005 as the DTS Data Destination? If you are importing data from text files to SQL Server 2005 database tables, you need to define SQL Server 2005 as the DTS data destination. This tutorial continues from the previous tutorial to show you how to tell DTS to create a new tabl... 2024-01-19, 2419🔥, 0💬

JSON_QUOTE() - Quoting JSON String
How to convert a regular character string into a JSON (JavaScript Object Notation) string using the JSON_QUOTE() function? JSON_QUOTE(str) is a MySQL built-in function that converts a regular character string into a JSON string by quoting the string with double quotes. It replaces the double-quote c... 2023-12-10, 2415🔥, 0💬

MySQL Functions on Character String Values
Where to find reference information and tutorials on MySQL database functions on string values? I want to know how to use SUBSTRING(), REPLACE() and other character string related functions. Here is a collection of reference information and tutorials on MySQL database functions on string values comp... 2023-11-10, 2413🔥, 0💬

UNCOMPRESSED_LENGTH() - Uncompressed Data Length
How to calculate the original data length of a compressed byte string using the UNCOMPRESSED_LENGTH() function? UNCOMPRESSED_LENGTH(str) is a MySQL built-in function that returns the original data length of a given compressed byte string. For example: SET @bin = x'37000000789C738BF44C4ECD2B49 2DD24BC... 2024-12-18, 2403🔥, 0💬

LAG() - N-Row before Current Row within Window
How to evaluate a field expression on n-row before the current row in the current result set window using the LAG() function? LAG(exp, n, default) is a MySQL built-in window function that evaluates a field expression on n-row before the current row in the current result set window. For example: SELE... 2024-09-28, 2386🔥, 0💬

PHP MSSQL - Dropping an Existing Table
PHP MSSQL - How To Drop an Existing Table? If you need to delete a table created before, you can run the DROP 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('FyiCenterData ... 2024-03-07, 2374🔥, 0💬

MySQL Functions on System Information
Where to find reference information and tutorials on MySQL database functions on System Information? I want to know how to use DATABASE(), VERSION() and other functions. Here is a collection of reference information and tutorials on MySQL database functions on System Information compiled by FYIcente... 2024-07-15, 2345🔥, 0💬

FIRST_VALUE() - First Value of Result Set Window
How to obtain the first value of a field expression in the current result set window using the FIRST_VALUE() function? FIRST_VALUE(exp) is a MySQL built-in window function that returns the first value of a field expression in the current result set window. For example: SELECT help_topic_id AS tip, h... 2024-09-28, 2317🔥, 0💬

JSON_TABLE() - Inline Table with JSON Array
How to create an inline table with a JSON Array using the JSON_TABLE() function? JSON_TABLE(json, path COLUMNS (column_list) AS alias) is a MySQL built-in function that creates an inline table by parsing JSON array members. For example: the following statement creates a 1-column table with string me... 2024-11-23, 2266🔥, 0💬

COLLATION() - Detecting Character Collation Name
How to detect the character collation name associated to a given character string using the COLLATION() function? COLLATION(str) is a MySQL built-in function that returns the character collation name associated to a given character string. A character collation name refers to a set of rules to sort ... 2025-10-14, 2214🔥, 0💬

IS_UUID() - Validating UUID String Format
How to validate a UUID (Universal Unique IDentifier) string using the IS_UUID() function? IS_UUID(uuid) is a MySQL built-in function that validates a UUID (Universal Unique IDentifier) string. It only checks if the given UUID is a 32-digit hexadecimal string or not. For example: SELECT IS_UUID('447f... 2023-12-08, 2188🔥, 0💬

Window Functions
What Are Window Functions? A Window Function is a function that can perform calculations over a window of rows referenced from the current row in query result. A window function is called with a OVER clause in the following syntax: window_function(...) OVER window where window is one of the followin... 2024-05-15, 2174🔥, 0💬

JSON_VALUE() - Converting JSON Value
How to convert a JSON value to a given MySQL data type using the JSON_VALUE() function? JSON_VALUE(json, path RETURNING type on_empty on_error) is a MySQL built-in function that converts a JSON value to a given MySQL data type. The input JSON value can be a member of a parent JSON array or object. F... 2024-11-23, 2162🔥, 0💬

Removed: DES_ENCRYPT() - DES Data Encryption
How to encrypt data with the DES (Data Encryption Standard) algorithm using the DES_ENCRYPT() function? DES_ENCRYPT(clear, key) is a MySQL built-in function that encrypts data with the DES (Data Encryption Standard) algorithm. Note that DES_ENCRYPT() is no longer supported. It was: Introduced MySQL ... 2024-10-14, 2158🔥, 0💬

Calling MySQL Built-in Functions
Where to find answers to frequently asked questions about calling MySQL Built-in Functions? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com team about calling MySQL Built-in Functions: Function Name Case Insensitive Function Argument Modifier Variable Number ... 2023-11-14, 2153🔥, 0💬

LAST_VALUE() - Last Value of Result Set Window
How to obtain the last value of a field expression in the current result set window using the LAST_VALUE() function? LAST_VALUE(exp) is a MySQL built-in window function that returns the last value of a field expression in the current result set window. For example: SELECT help_topic_id AS tip, help_... 2024-09-28, 2147🔥, 0💬

INET_NTOA() - IP Address Number to String
How to convert an IP address from number format to string using the INET_NTOA() function? INET_NTOA(int) is a MySQL built-in function that converts an IP address from number format to string. It uses the following conversion formula: INET_NTOA(int) = 'p 1 .p 2 .p 3 .p 4 ' where: p 1 = (int&gt;&a... 2026-04-13, 2142🔥, 0💬

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General MySQL Oracle SQL Server