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Input Operation Test with VARCHAR Data Type
How to run an input operation test with INSERT statements on VARCHAR data type? If you want to test the INSERT statement performance with a variable record size using the VARCHAR data type, you can follow this tutorial. The VARCHAR data type uses a storage size of string length plus 2 extra bytes. C... 2019-07-21, ∼2530🔥, 0💬

fn_virtualfilestats() Not Useful on Azure SQL
Why is fn_virtualfilestats() not giving correct write counter values on Azure SQL Database? If you run the SQL script, fyi_insert_write.sql, presented in the last tutorial with different @Count and @Size on Azure SQL Database, you will see that the fn_virtualfilestats() function view is giving incor... 2019-05-12, ∼2524🔥, 0💬

Input Operation Test with UUID Data Type
How to run an input operation test with INSERT statements on UUID data type? If you want to see the impact of larger data type like 16-byte UNIQUEIDENTIFIER (UUID), comparing to the 4-byte INT and 8-byte BIGINT, you can follow this tutorial. Create the following SQL script, fyi_uuid_insert.sql: -- f... 2019-07-30, ∼2505🔥, 0💬

SELECT Test Summary on SQL Server 2016
What are performance differences of running the SELECT statement with different criteria and table storage options on SQL Server 2016? Here is a summary of performance differences of running the SELECT statement with different criteria and table storage options on SQL Server 2016. Throughput is calc... 2019-05-15, ∼2479🔥, 0💬

SELECT with BIGINT on SQL Server 2016
What is the data read performance with the SELECT statement using BIGINT as the search criteria on SQL Server 2016? To see the data read performance with the SELECT statement using BIGINT as the search criteria on SQL Server 2016, you can run the SQL script, fyi_select_bigint.sql, presented in the l... 2019-04-29, ∼2473🔥, 0💬

Input Operation Test with BIGINT Data Type
How to run an input operation test with INSERT statements on BIGINT data type? If you want to see the impact of larger data type like 8-byte BIGINT, comparing to the 4-byte INT, you can follow this tutorial. Create the following SQL script, fyi_bigint_insert.sql: -- fyi_bigint_insert.sql -- Copyrigh... 2019-07-30, ∼2450🔥, 0💬

What Is Azure SQL Database
What Is Azure SQL Database? Azure SQL Database is the intelligent, scalable, cloud database service offered by Microsoft on their Azure cloud platform. Main features of Azure SQL Database are: Frictionless database migration with no code changes at an industry leading TCO Built-in machine learning f... 2019-07-04, ∼2446🔥, 0💬

What Is a SQL Server Partition
What Is a SQL Server Partition? A SQL Server Partition represents a logical data storage space area that is used to store data for a table or other data objects. By default all records in a table are stored in a single Partition. You may configure a table as Partitioned with use multiple partitions,... 2019-07-09, ∼2433🔥, 0💬

SQL Server System Views and Functions
Where to find tutorials on using SQL Server System Views and Functions related to data storage and I/O? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on using SQL Server System Views and Functions related to data storage and I/O. What Is a SQL S... 2019-07-14, ∼2427🔥, 0💬

Join sys.allocation_units with fn_virtualfilestats()
How to join the sys.allocation_units system view with the fn_virtualfilestats() system function view? If you want to watch the I/O statistics of physical files related to a give table, you need to join sys.allocation_units system view with fn_virtualfilestats() as shown below: -- fyi_get_io_stats_by... 2019-06-29, ∼2398🔥, 0💬

Performance Impact of Higher Azure Service Tier
What is the Performance Impact of Higher Azure Service Tier? If you want to see the performance impact of Azure Service tier, you can re-run the same test script, fyi_block_insert.sql, on another Azure SQL Database with higher service tier. For example, run fyi_block_insert.sql, on a Azure SQL Datab... 2019-07-21, ∼2375🔥, 0💬

What Is a SQL Server Filegroup
What Is a SQL Server Filegroup? A SQL Server Filegroup represents a logical group of one or multiple physical Files. Each Filegroup will be used as a single logical unit to allocate storage space for database tables. A SQL Server Database must have one Filegroup defined as the Default Filegroup, or ... 2019-07-14, ∼2372🔥, 0💬

Test Script for INSERT with BIGINT
Where can I get a SQL script to do I/O performance test with INSERT statement using BIGINT without primary key? Here is a SQL script to do I/O performance test with INSERT statement using BIGINT without primary key. The test result can provide a baseline for INSERT statement with a primary key. -- f... 2019-05-18, ∼2372🔥, 0💬

Find the File IDs of a Given Table
How to find the File IDs of a Given Table If you are performing an I/O test on a specific table and want to use the fn_virtualfilestats() function to gather I/O statistics, you need to follow this tutorial to find which files is used to store a given table. To find out which files are used to store ... 2019-06-29, ∼2362🔥, 0💬

Test Script for INSERT with PRIMARY KEY
Where can I get a SQL script to do I/O performance test with INSERT statement using BIGINT with PRIMARY KEY? Here is a SQL script to do I/O performance test with INSERT statement using BIGINT with PRIMARY KEY. -- fyi_insert_primary_key.sql -- Copyright (c) FYIcenter.com DECLARE @Count INT SET @Count... 2019-05-17, ∼2350🔥, 0💬

"Your services were disabled" Error
Why am I getting the "Your services were disabled" error while running a query on Azure SQL Database? You are getting the "Your services were disabled" error, because you have reached the spending limit configured on your Azure subscription. For example, let's assume that your subscription has a $1,... 2019-07-21, ∼2330🔥, 0💬

Input Operation Test with Large Records
How to run an input operation test with INSERT statements with Large Records? If you want to test the INSERT statement performance with large record sizes, we need to use a table with multiple columns, since one column of VARCHAR is limited to 8000 characters. Create the following SQL script, fyi_bl... 2019-07-21, ∼2305🔥, 0💬

Test Script for SELECT with MEMORY_OPTIMIZED
Where can I get a SQL script to do I/O performance test with SELECT statement on a MEMORY_OPTIMIZED table? Here is a SQL script to do I/O performance test with SELECT statement using BIGINT PRIMARY KEY on a MEMORY_OPTIMIZED table. -- fyi_select_in_memory.sql -- Copyright (c) FYIcenter.com -- DECLARE... 2019-04-23, ∼2263🔥, 0💬

Use allocation_units for I/O Tests
How to Use allocation_units system view for I/O Tests? If want to use the allocation_units system view to calculate the I/O statistics while doing performance tests, you need to take a copy of the current counters from the allocation_units view before running a test, run the test, then compare count... 2019-05-12, ∼2254🔥, 0💬

Review Azure SQL Database Configuration
How is my Azure SQL Database configured? If you have followed the previous tutorial, you can continue with this one to review your Azure SQL Database configurations. 1. Login to your Azure Web portal. 2. Search and select your resource group name "Group". You see two services have been created: fyi-... 2019-07-07, ∼2226🔥, 0💬

Azure SQL Database Related Terminology
Azure SQL Database Related Terminology: DTU - DTU (Database Transaction Unit) is a unit of measure of mixed resources of CPU, Memory and IO used to support Azure SQL database. The actual computing power provided by each DTU is based on your SQL database service tier. For example, at the "Standard" t... 2019-07-05, ∼2213🔥, 0💬

I/O Tests on SELECT Statements
Where to find tutorials on I/O tests on SELECT Statements on SQL Server Database? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on I/O tests on SELECT Statements on SQL Server Database. Test Script for SELECT with CURSOR No Reads on SELECT with ... 2019-05-31, ∼2208🔥, 0💬

Test Script for SELECT with CURSOR
Where can I get a SQL script to do I/O performance test with SELECT statement using CURSOR to loop through records? Here is a SQL script to do I/O performance test with SELECT statement using CURSOR to loop through records. It uses the fn_virtualfilestats() function table to calculate the I/O statis... 2019-05-06, ∼2201🔥, 0💬

Test Script for SELECT with BIGINT
Where can I get a SQL script to do I/O performance test with SELECT statement using BIGINT as the search criteria? Here is a SQL script to do I/O performance test with SELECT statement using BIGINT as the search criteria. It uses the fn_virtualfilestats() function table to calculate the I/O statisti... 2019-04-19, ∼2154🔥, 0💬

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Article Associations Database General Java Selenium SoapUI Tools UFT