How To Load One BILLION Rows into an SQL Database

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How To Load One BILLION Rows into an SQL Database

Рет қаралды 33,656

Күн бұрын

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Have you ever wondered how to import one billion rows into an SQL database? Or how long it would take?
In this video, you'll see how to generate a file with 1 billion rows, how to import it into four different SQL databases, and how long it takes in each database.
⏱ TIMESTAMPS:
00:00 - The challenge
00:31 - Setting up the data
02:08 - MySQL
04:08 - Postgres
05:31 - SQL Server
07:35 - Oracle method 1
09:33 - Oracle method 2
🔗 VIDEO LINKS:
Gunnar Morling's blog post: www.morling.de...
1BRC GitHub repo: github.com/gun...
SQL scripts used in this video: github.com/bbr...
Commands to clone the repo and generate the file:
git clone github.com/gun...
java -version
mvnw verify
sh create_measurements.sh 1000000000
Specs of the computer used in this video:
Lenovo Ideapad 5 laptop
CPU: Intel i5 2.4 GHz
RAM: 16 GB
OS: Windows 11

Пікірлер: 108

@DatabaseStar Ай бұрын

Thanks for all of the comments everyone! I'm glad a couple of issues have been pointed out. I'll address them when I redo the process in a follow-up to this video, including: - use SQL Server Developer Edition rather than Express to avoid the database size limit and import all 1B rows - use another version of Oracle to also avoid the database size limit and import all 1B rows - consider optimising the queries or changing some parameters to further improve the performance of the SELECT

@ahmettek315 Ай бұрын

If doing this with 250 million rows and multiplying by 4 was a correct approach, then for all databases you could just use 1000 rows and multiply by a million.

@jpsolares Ай бұрын

Perhaps consider using the Developer Edition, as it is equivalent to the Enterprise Edition. Since the project is not intended for production purposes, there should be no issue in utilizing it.

@ahmettek315 Ай бұрын

@@jpsolares We all know it. What I am saying is, you can't test something doing with 250 million rows and multiplying by 4 and then claim it is equal to doing with 1 billion rows. Looks like you understood as if I were asking how to do it.

@DatabaseStar Ай бұрын

Good point! The only reason I used 250m for Oracle and SQL Server was because of the size limitations mentioned in the video. In hindsight (and from the other comments), I could have used the SQL Server Developer edition to load the full 1 billion rows. I could also have used a different edition for Oracle just for this experiment.

@ahmettek315 Ай бұрын

@@DatabaseStar No problem. I later read about it a bit, and it was indeed a challenge where you could use any kind of optimization you can. In my view, that made your SQL server and postgreSQL samples void for me. I don't use mySQL and Oracle, but at least I know your sample is void for mySQL as well. You are doing the uploads and querying just how a beginner would do as well. No tricks, no optimizations, no use of extensions, CLR etc. I could create better versions for postgreSQL and SQL server but only when I have spare time and\or I think it is worth doing it.

@DatabaseStar Ай бұрын

Yes, that's true, I mention in the video I don't make any optimisations such as indexes or adjustments to the process. The default settings are used on purpose. There are definitely ways to make it faster in each database!

@mortezanaghavimoghadam8258 Ай бұрын

Time needed for a certain query doesn't grow linearly in respect to the size of data 6:00

@DatabaseStar Ай бұрын

Yes I completely agree. I mentioned in the video it's not a true comparison as I was unable to load the full 1B rows into Oracle and SQL Server.

@Chris-by8eh Ай бұрын

in SQL server, if you change the auto grow to 10,000 from 64 it will run much faster for both data and log files. Also SQL server has external tables as well.

@lucca5101 Ай бұрын

As does Postgres, but he only used that feature with Oracle. Every other DB he copied the data. Totally not pushing Oracle…

@DatabaseStar Ай бұрын

Thanks for the tip, I wasn't aware of that! I left all of the databases at their default settings but this would have been a good one to change to avoid the issue.

@DatabaseStar Ай бұрын

No, I'm not pushing Oracle, and I left all of the settings as the defaults. I did an additional method for Oracle because I was aware of its ability to use an external table.

@andyj115 23 күн бұрын

INSERT or BULK-INSERT do not have a linear data insertion time, but an exponential one. Therefore the test should be repeated using 250,000 records for each database (in the comparison of no-cost databases). Oracle and MSSql in the paid versions have very respectable performances as they no longer have RAM or CPU core limits

@DatabaseStar 21 күн бұрын

Thanks for the tip, yeah that's right. Others have pointed that out as well. In hindsight I should have used different versions of Oracle and SQL Server to avoid the size limits, so I could import the billion rows in all vendors.

@RodrigoMenares Ай бұрын

To solve the growth problem in SQL Server, when creating the database, you must click on the ... and choose the growth in percentages, this prevents you from having to indicate a value that may be short (that is, not establishing a growth limit) and thus you solve the problem of the size of the database

@DatabaseStar Ай бұрын

Good tip, thanks for sharing!

@hendrykhoza4782 Ай бұрын

Please include sqlite

@DatabaseStar Ай бұрын

Good idea

@ojikutu Ай бұрын

Loading 250m rows 4 times is not equal to loading 1billion rows. The experiment is really flawed. You need to use 250m rows for all. looking forward to another test with same yardstick. Kudos!

@DatabaseStar Ай бұрын

Thanks! Yeah a few people had pointed that out, and I mentioned it a couple of times in the video. I plan on doing a follow-up video for it.

@PaulBunkey Ай бұрын

You can freely and legally use Developer edition for an MS Sql Server. As long as there no production data loaded, the Dev edition is free.

@DatabaseStar Ай бұрын

Thanks for the tip! I should have used that edition, in hindsight, for a better comparison.

@ahmettek315 Ай бұрын

In a real world scenario, likely you wouldn't just keep that data as two columns city, temperature. Checking the original challenge, it is more about parsing data. Using plain streaming with languages (C series, Java, Go, Rust, ...) is expected to beat any database that way IMHO. They don't need to store all the values, just min, max and average (aka Sum and count).

@DatabaseStar Ай бұрын

Yeah the results of the Java challenges were impressive. One of the points of this video is that databases are great at processing data, so I wanted to see how the different databases handled it.

@ahmettek315 Ай бұрын

@@DatabaseStar Indirectly I started to dig what was that about, those results were not from a file on disk but from a RAM disk and the machine used is an AMD EPYC 7502P with 32 cores and 128 Gb memory! That CPU is supposedly more than 5 times better than yours and is a server CPU. Directly working from memory on a beast hardware those timings is not fair to compare with yours. Maybe should also run one or more of their code to see what they score on the same hardware. (Trying to allocate time for a postgreSQL and\or Go check)

@anotherme4638 Ай бұрын

It is interesting to see a real test for the deference in loading/select speed between DBs, and how out of the box Oracle numbers (select) are more than13x times faster than postgres and mysql I wander if there are way to tweaked some parameters in Postgres/Mysql (especially for Mysql) to decrease those number and make them comparable to Oracle. Thanks a lot for the demonstration, it is a grate video

@DatabaseStar Ай бұрын

Glad you liked the video! Yes I thought the test was interesting as I was doing it. I think there would be ways to tweak some parameters on the server to improve the import process. The default settings may not be the fastest. Also there are indexes that could have been added after the import which could have also improved the query performance.

@ahmettek315 Ай бұрын

It is only so, the way he did. I don't use mySQL but look at vitess project for example. AFAIK it is what made possible youtube to store their videos on mySQL. You may also check with PlanetScale.

@asrytube 25 күн бұрын

Oh I love Oracle! I've been using for years and fascinated with all its features, functions and properties. Its direct path loading feature is also awesome.

@DatabaseStar 24 күн бұрын

Yeah, it does have a lot of features.

@rmcgraw7943 27 күн бұрын

bcp, or load a mdb on a non-production server then copy the file and sp_attachdb it. you’ll need to stop the service, then attach it. I can think of a half dozen ways to do this, depending on business constraints.

@DatabaseStar 24 күн бұрын

Good to know there are many other ways to do this

@ravishmahajan9314 Ай бұрын

Have you used Clickhouse or DuckDB??

@DatabaseStar Ай бұрын

No, I haven't used them actually.

@wbarbosabr 28 күн бұрын

How about SQL*Loader in Oracle?

@DatabaseStar 24 күн бұрын

Good idea!

@charliesta.abc123 24 күн бұрын

Interesting, thank you for sharing. For the postgres part, do you think the pagination negatively affected the results?

@DatabaseStar 24 күн бұрын

No problem! I think it did, actually, based on a couple of other comments. In hindsight I should have shown all results at once in the query to get a more accurate number.

@krzysztofcierpia4853 17 күн бұрын

You should extend your test for databases like: SAP HANA, IBM DB2 , Snowflake, Google BigQuery, MariaDB, SQLite

@DatabaseStar 17 күн бұрын

Good idea! I don't have any experience with those databases unfortunately.

@krzysztofcierpia4853 14 күн бұрын

@@DatabaseStar You can find free/community edition for SAP Hana (Express) and DB2 (community edition )

@JunaidKhan-gq8nw Ай бұрын

Much Helping

@DatabaseStar Ай бұрын

Thanks!

@vpn740 Ай бұрын

concurrency is a critical factor (one of the many others) in the context of this scenario. based on my observations, SMP databases exhibit subpar performance when managing such workloads in a production setting. in contrast, MPP databases such as teradata, snowflake, and netezza offer a more suitable solution. a decade ago, I was involved in an oracle to teradata migration project, where we conducted parallel testing by executing identical queries on both database platforms. the disparities we encountered were stark and significant.

@ramsundararaman6615 Ай бұрын

Tell us more about it, please!

@DatabaseStar Ай бұрын

Good point, yes I imagine concurrency could impact the performance here.

@EMoscosoCam Ай бұрын

You can get the Developer Edition of SQL Server, which is free

@DatabaseStar Ай бұрын

Thanks for sharing! In hindsight, I should have done this instead of using Express, because it would have been a fairer comparison.

@cheinamann 13 күн бұрын

What about comparing this to SQL serverless endpoint using an external table. This can be done in Synapse or Fabric. That would be fair compare to Oracle External table. Otherwise insightful. Thank you.

@DatabaseStar 10 күн бұрын

Good idea, I don't have any experience with those so I didn't include them

@low-sound Ай бұрын

Great video. But it got me curious what about nosql databases? I know they are faster than sql but how much? Can you make a video for nosql databases? Like mongo, cassandra etc.

@flybyray Ай бұрын

Or just use unix tools efficiently directly and/or withinOrAsPipe to the generator script itself 😂

@DatabaseStar Ай бұрын

Thanks! They could be faster, but I don't have a lot of experience with NoSQL so I just focused on SQL for this video.

@ahmettek315 Ай бұрын

Just for curiosity, can you share your machine's specs? From create...sh timing it looks like you have a faster machine than mine but would be good to know.

@DatabaseStar Ай бұрын

Sure! Here are the specs: Lenovo Ideapad 5 laptop CPU: Intel i5 2.4 GHz RAM: 16 GB OS: Windows 11

@RadityoPrasetiantoWibowo Ай бұрын

for sqlserver you can use developer edition

@RadityoPrasetiantoWibowo Ай бұрын

you should use 1. sqlserver developer edition 2. you should monitor memory usage and CPU usage also 3. you should use same client tools like dbbeaver, or minimum client like CLI version of each vendor good work!

@DatabaseStar Ай бұрын

Thanks! Yeah a few other commenters have pointed that out, and in hindsight I should have done that.

@amitkumdixit 27 күн бұрын

Your Postgresql select benchmark was also not correct. It wasn't 27 minutes it was much lower . So the issue was the query already returned all the results. It was your dbeaver which was paginating the result

@DatabaseStar 24 күн бұрын

Oh thanks for pointing that out, that's good to know. I'll look at it again as it seemed like DBeaver took several minutes each time it loaded a new page.

@RolandOkouby Ай бұрын

GREAT CONTENT🔥

@DatabaseStar Ай бұрын

Thanks!

@arbazadam3407 Ай бұрын

One of the best channels on database

@DatabaseStar Ай бұрын

Thanks!

@Nachtaktiv2000 Ай бұрын

… some of the Oracle comparison-min-max-times are only for fetching 200 rows!!! … and why not loading 500m rows and multipl. x2 ?

@DatabaseStar Ай бұрын

Good point! I tried to load 500m rows but that also exceeded the maximum size of the database (10 GB).

@yanjh222 Ай бұрын

So, what's your hardware configuration, just a laptop?

@DatabaseStar Ай бұрын

Yeah, it's my Windows laptop: Lenovo Ideapad 5 laptop CPU: Intel i5 2.4 GHz RAM: 16 GB OS: Windows 11

@lucca5101 Ай бұрын

Clearly trying to push Oracle. Why not use Postgres to directly read the text file for a better comparison?

@DatabaseStar Ай бұрын

Good idea! In my research I couldn't find a way to read a text file directly using Postgres. Do you know how it could be done? I'm not trying to push Oracle at all. My preferred database to use is actually Postgres :)

@palkollar7739 Ай бұрын

what if you index the city names, how fast would the queries be?

@DatabaseStar Ай бұрын

They would probably be quite a bit faster!

@mariosaenz5923 Ай бұрын

Why you didn’t use sql server developer edition??? to avoid the express problems

@DatabaseStar Ай бұрын

Good point! In hindsight I should have done this, and it would have been a better comparison.

@timelschner8451 Ай бұрын

How fast would it be to load all the data into an in memory Database and query it?

@Nachtaktiv2000 Ай бұрын

in memory will only be a bit faster when loading, but up to 1000x faster when querying

@DatabaseStar Ай бұрын

Good question. I agree with what Nachtaktiv mentioned, the benefits would be when querying.

@syfre9506 25 күн бұрын

You should use SQL Server for developers edition, it's not limited

@DatabaseStar 24 күн бұрын

That's true! Others have mentioned it and I wasn't aware of that when I made the video.

@RodrigoMenares Ай бұрын

that could change work times, greetings

@DatabaseStar Ай бұрын

Thanks!

@nicku33 Ай бұрын

Do DuckDB !!

@DatabaseStar Ай бұрын

Good idea

@nagesh007 26 күн бұрын

Awesome

@DatabaseStar 24 күн бұрын

Thanks!

@JohnoScott 26 күн бұрын

this sounds like a job for DuckDB 🦆🔥💪

@DatabaseStar 24 күн бұрын

Oh good to know!

@abhor115 Ай бұрын

Very impress

@DatabaseStar Ай бұрын

Thanks!

@kwando88 Ай бұрын

Now do the same with duckdb :)

@DatabaseStar Ай бұрын

Good idea!

@bjarnenilsson80 2 күн бұрын

wow SQL server and oracle does not exactly cover themselves in glory here, "soptty import to big" does not cut it IMHO. and SQL server needs to step up it's game. I wonder why Mysql is that slow and will mariadb do better?

@DatabaseStar 18 сағат бұрын

True, but I was using the "free" edition of their databases and they are commercial products. I'm not sure why MySQL was slower, perhaps it's not designed for this kind of data. Or maybe the defaults for MySQL are not great for this, and there are settings I can change to improve it.

@robderrt 23 күн бұрын

how to do it in python?

@DatabaseStar 21 күн бұрын

I'm not sure, I don't have a lot of experience in Python. I assume you can write some code to read the CSV file and analyse it directly.

@rezarafieirad Ай бұрын

perfect

@DatabaseStar Ай бұрын

Thanks!

@poparab Ай бұрын

okay than lets try mariadb and than we give them challange under 9 minuts

@DatabaseStar Ай бұрын

Good idea

@chudchadanstud Ай бұрын

due just keep everything the same

@DatabaseStar Ай бұрын

What do you mean?

@yaynative Ай бұрын

Wow! Why is Oracle so fast?

@DatabaseStar Ай бұрын

I think because it's a more "premium" database and it's built for high-end performance. Or maybe the default settings are better for importing large sets of data compared to the others.

@lucca5101 Ай бұрын

Or because it wasn’t a fair comparison. Both Postgres and SQL Server can directly read external files but you chose to copy the data on all but Oracle.

@yaynative Ай бұрын

@@lucca5101 Interesting 🤔

@DatabaseStar Ай бұрын

I couldn't find any documentation on reading a text file directly in Postgres, SQL Server, or MySQL, so I didn't include those in this video. I still included an "import file into table" method for Oracle to see how they would compare as well.