text:
Q: inner join large table with small table , how to speed up dear php and mysql expertor
i have two table one large for posts artices 200,000records (index colume: sid) , and one small table (index colume topicid ) for topics has 20 record .. have same topicid
curent im using : ( it took round 0.4s)
+do get last 50 record from table:
SELECT sid, aid, title, time, topic, informant, ihome, alanguage, counter, type, images, chainid FROM veryzoo_stories ORDER BY sid DESC LIMIT 0,50
+then do while loop in each records for find the maching name of topic in each post:
while ( .. ) {
SELECT topicname FROM veryzoo_topics WHERE topicid='$topic'"
....
}
+Now
I going to use Inner Join for speed up process but as my test it took much longer from 1.5s up to 3.5s
SELECT a.sid, a.aid, a.title, a.time, a.topic, a.informant, a.ihome, a.alanguage, a.counter, a.type, a.images, a.chainid, t.topicname FROM veryzoo_stories a INNER JOIN veryzoo_topics t ON a.topic = t.topicid ORDER BY sid DESC LIMIT 0,50
It look like the inner join do all joining 200k records from two table fist then limit result at 50 .. that took long time..
Please help to point me right way doing this..
eg take last 50 records from table one.. then join it to table 2 .. ect

A: Do not use inner join unless the two tables share the same primary key, or you'll get duplicate values (and of course a slower query).

A: Please try this :
SELECT *
FROM (
SELECT a.sid, a.aid, a.title, a.time, a.topic, a.informant, a.ihome, a.alanguage, a.counter, a.type, a.images, a.chainid
FROM veryzoo_stories a
ORDER BY sid DESC
LIMIT 0 , 50
)b
INNER JOIN veryzoo_topics t ON b.topic = t.topicid

I made a small test and it seems to be faster. It uses a subquery (nested query) to first select the 50 records and then join.
Also make sure that veryzoo_stories.sid, veryzoo_stories.topic and veryzoo_topics.topicid are indexes (and that the relation exists if you use InnoDB). It should improve the performance.
Now it leaves the problem of the ORDER BY LIMIT. It is heavy because it orders the 200,000 records before selecting. I guess it's necessary. The indexes are very important when using ORDER BY.
Here is an article on the problem : ORDER BY … LIMIT Performance Optimization

A: I'm just give test to nested query + inner join and suprised that performace increase much:  it now took only 0.22s .  Here is my query:
SELECT a.*, t.topicname
FROM (SELECT sid, aid, title, TIME, topic, informant, ihome, alanguage, counter, TYPE, images, chainid
  FROM  veryzoo_stories
  ORDER BY sid DESC
  LIMIT 0, 50) a
  INNER JOIN veryzoo_topics t ON a.topic = t.topicid

if no more solution come up , i may use this one .. thanks for anyone look at this post


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Currently, BitBucket only supports to add ed25519 SSH key to user account, not Pipeline. This is needed to help a deployment tool (like Ansible) running in Pipeline access to server (via SSH).
Thanks for reaching out. Can you clarify whether you've having issues adding SSH keys (in general) to Pipelines or having issues adding ed25519 keys in particular?
If it's the latter, can you let me know what issue or error message your running into when you try to add the key?
@Aneita Yang I can add ed25519 SSH key now. I think BitBucket has fixed this issue before you are assigned. Thanks.
the path of the key file is weird. This key is not RSA but the path created by Pipeline is RSA.


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text:
Q: Mysql Workbench Sidebar Missing Completely My mysql workbench sidebar is not showing up
My machine is currently running Linux Mint 20.3 and Mysql Workbench Version is MySQL Workbench CE (GPL) 8.0.29 CE build 1751076.
screengrab

A: It's sounds silly but hope it might help.
I just hovered mouse to the left and dragged it to the right.
enter image description here

A: Try View->Panels->Show Sidebar.
https://dev.mysql.com/doc/workbench/en/wb-sql-editor-navigator.html

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ACLU says US will miss deadline to reunite migrant families
National and Regional
ACLU says...
SAN DIEGO (AP) – The American Civil Liberties Union said it appears the Trump administration will miss Tuesday's court-ordered deadline to reunite scores of young migrant children with their parents.
The ACLU said late Sunday that the administration provided it with a list of 102 children under 5 and that it "appears likely that less than half will be reunited" by the deadline.
The Justice Department asked U.S. District Judge Dana Sabraw for more time last week, but the judge on Friday did not grant a blanket extension, saying only that he would consider certain exceptions.
He told the two sides to discuss possible exceptions and report back to him on Monday.
More than 2,000 children in all were forcibly separated from their parents at the Mexican border this spring under the Trump administration's zero-tolerance policy on illegally entering the country. While parents were prosecuted, children were placed in the custody of the Health and Human Services Department.
President Donald Trump reversed course on June 20 amid an international outcry and said families should remain together.
On June 26, Sabraw set deadlines of Tuesday to reunite children under 5 with their families and July 26 for older children. Sabraw, who was appointed by Republican President George W. Bush, wrote that the "situation has reached a crisis level" and that the "chaotic circumstances" were of the government's own making.
ACLU attorney Lee Gelernt said Monday that a judge can impose sanctions, usually fines, for failure to meet the deadline but that the organization is not pressing for that at this time. He said the ACLU instead wants a detailed explanation of when all families will be reunited.
"At this point what we need is very specific, concrete steps," he said.
Health and Human Services Secretary Alex Azar said Thursday there were "under 3,000" children separated from their parents. Previously, he said 2,047.
"It's extremely disappointing that the Trump administration looks like it will fail to reunite even half the children under 5 with their parent," Gelernt said. "These kids have already suffered so much because of this policy, and every extra day apart just adds to that pain."
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FILE - In this June 18, 2018 file photo, dignitaries take a tour of Southwest Key Programs Casa Padre, a U.S. immigration facility in Brownsville, Texas, where children who have been separated from their families are detained. The American Civil Liberties Union says it appears the Trump administration will miss a Tuesday, July 10 deadline to reunite young children with their parents in more than half of the cases. The group said the administration provided it with a list of 102 children under 5 years old who must be reunited by Tuesday under an order by U.S. District Judge Dana Sabraw in San Diego. It said in a statement that it "appears likely that less than half will be reunited" by that deadline. (Miguel Roberts /The Brownsville Herald via AP, File) - The Associated Press
FILE - In this June 25, 2018 file photo, Christian, from Honduras, recounts his separation from his child at the border during a news conference at the Annunciation House,in El Paso, Texas. A judge has put off at least until Monday, July 9, a ruling on a Trump administration request for more time to reunite more than 100 children under 5 who were separated from their parents after crossing the border. U.S. District Judge Dana Sabraw ordered the Justice Department to share a list of the 101 children by Saturday afternoon with the American Civil Liberties Union, which successfully sued the administration to force the young children and families to be reunited by Tuesday. (AP Photo/Matt York, File) - The Associated Press
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