Private Proxies – Buy Cheap Private Elite USA Proxy + 50% Discount!Private Proxies – Buy Cheap Private Elite USA Proxy + 50% Discount!Private Proxies – Buy Cheap Private Elite USA Proxy + 50% Discount!Private Proxies – Buy Cheap Private Elite USA Proxy + 50% Discount!
    0
  •   was successfully added to your cart.
  • Home
  • Buy proxies
  • Extra features
  • Help
  • Contact
  • Login
  • 50% OFF
    BUY NOW!
    50
    PROXIES
    $19
    --------------------
    BUY NOW!
    BUY NOW!
    BUY NOW!
    BUY NOW!
    BUY NOW!
    $29
    $49
    $109
    $179
    $299
    --------------------
    --------------------
    --------------------
    --------------------
    --------------------
    PROXIES
    PROXIES
    PROXIES
    PROXIES
    PROXIES
    100
    200
    500
    1,000
    2,000
    TOP SELLER
    BEST VALUE
    For All Private Proxies!

I have these jobs that run in parallel that call a series of queries on my DB. They’re batched so each job is associated with a group of “bar” objects. So in the example below, temp1 is just a temporary table like:

CREATE TEMPORARY TABLE temp1 (id int(11) NOT NULL, PRIMARY KEY (id))

The problem I’m having is queries like this are deadlocking:

explain update     foo join     temp1 on foo.bar_id = temp1.id set     foo.a = null; 

Gives the output (please excuse the formatting):

id  select_type table   partitions  type    possible_keys   key key_len ref rows    filtered    Extra 1   UPDATE  foo NULL    ALL bar_id  NULL    NULL    NULL    222939  100.00  Using where 1   SIMPLE  temp1   NULL    eq_ref  PRIMARY PRIMARY 4   db.foo.bar_id   1   100.00  Using index 

So as I understand it, this will lock every row while updating because of that second line. As a sort of band aid, if I put the IDs to update in a temp table everything works fine and the deadlocks stop:

create temporary table temp2 as (     select         foo.id     from         foo join temp1 on foo.bar_id = temp1.id );  explain update     foo join     temp2 on foo.id = temp2.id set     foo.a = null; 

Gives:

id  select_type table   partitions  type    possible_keys   key key_len ref rows    filtered    Extra 1   SIMPLE temp2    NULL    ALL NULL    NULL    NULL    NULL    1135    100.00  NULL 1   UPDATE  foo NULL    eq_ref  PRIMARY PRIMARY 4   db.temp2.id 1   100.00  NULL 

So not only does this fix my problem in practice, that result also looks a lot better.

This is where my MySQL knowledge fails me. I don’t understand why the first query is doing that full scan. I thought it was because it’s not using an index but I tried stuff like force index for join (bar_id) to no avail.

Is there something better I can do here? I’d at least like to understand what the problem is. Thanks!

✓ Extra quality

ExtraProxies brings the best proxy quality for you with our private and reliable proxies

✓ Extra anonymity

Top level of anonymity and 100% safe proxies – this is what you get with every proxy package

✓ Extra speed

1,ooo mb/s proxy servers speed – we are way better than others – just enjoy our proxies!

50 proxies

$19/month

50% DISCOUNT!
$0.38 per proxy
✓ Private
✓ Elite
✓ Anonymous
Buy now

100 proxies

$29/month

50% DISCOUNT!
$0.29 per proxy
✓ Private
✓ Elite
✓ Anonymous
Buy now

200 proxies

$49/month

50% DISCOUNT!
$0.25 per proxy
✓ Private
✓ Elite
✓ Anonymous
Buy now

500 proxies

$109/month

50% DISCOUNT!
$0.22 per proxy
✓ Private
✓ Elite
✓ Anonymous
Buy now

1,000 proxies

$179/month

50% DISCOUNT!
$0.18 per proxy
✓ Private
✓ Elite
✓ Anonymous
Buy now

2,000 proxies

$299/month

50% DISCOUNT!
$0.15 per proxy
✓ Private
✓ Elite
✓ Anonymous
Buy now

USA proxy location

We offer premium quality USA private proxies – the most essential proxies you can ever want from USA

100% anonymous

Our proxies have TOP level of anonymity + Elite quality, so you are always safe and secure with your proxies

Unlimited bandwidth

Use your proxies as much as you want – we have no limits for data transfer and bandwidth, unlimited usage!

Superfast speed

Superb fast proxy servers with 1,000 mb/s speed – sit back and enjoy your lightning fast private proxies!

99,9% servers uptime

Alive and working proxies all the time – we are taking care of our servers so you can use them without any problems

No usage restrictions

You have freedom to use your proxies with every software, browser or website you want without restrictions

Perfect for SEO

We are 100% friendly with all SEO tasks as well as internet marketing – feel the power with our proxies

Big discounts

Buy more proxies and get better price – we offer various proxy packages with great deals and discounts

Premium support

We are working 24/7 to bring the best proxy experience for you – we are glad to help and assist you!

Satisfaction guarantee

24/7 premium support, free proxy activation and 100% safe payments! Best reliability private proxies for your needs!

Best Proxy Packs

  • 2,000 Private Proxies $600.00 $299.00 / month
  • 1,000 Private Proxies $360.00 $179.00 / month

Quick Links

  • More information
  • Contact us
  • Privacy Policy
  • Terms and Conditions

Like And Follow Us


Copyright ExtraProxies.com | All Rights Reserved.
  • Checkout
  • Contact
  • Help
  • Home
  • My Account
  • My Cart
  • News
  • Privacy Policy
  • Proxy features
  • Proxy packs
  • Terms and Conditions
Private Proxies – Buy Cheap Private Elite USA Proxy + 50% Discount!
    0 items