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How to debug Lock wait timeout exceeded on MySQL?
...es.
Since you know the query, all the tables being accessed are candidates for being the culprit.
From there, you should be able to run SHOW ENGINE INNODB STATUS\G
You should be able to see the affected table(s)
You get all kinds of additional Locking and Mutex Information.
Here is a sample from one...
Find object by id in an array of JavaScript objects
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For multiple testing conditions would it therefore be something like: myArray.find(x => x.id === '45' && x.color == 'red').foo
– Apqu
Oct 20 '16 at 10:33
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How to combine class and ID in CSS selector?
...g that the ID belongs to a div can only be detrimental to the rendering performance (albeit pretty much negligible) without any benefit to it as an ID is already unique. I'd go with #content.myClass instead to make it clean.
– mystrdat
Mar 29 '12 at 13:26
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SQL - Update multiple records in one query
...ant details in your question in the first place. Anyway see updated answer for another solution (conditional update).
– peterm
Nov 27 '13 at 23:43
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App Inventor 2 CustomWebView 拓展：高级版Web浏览器，完美浏览现代Web前...
...ze
Returns the font size of text
InitialScale
Sets the initial scale for active WebView. 0 means default. If initial scale is greater than 0, WebView starts with this value as initial scale.
LayerType
Gets layer type
LoadWithOverviewMode
Returns whether the WebView loads pages in overv...
Get the _id of inserted document in Mongo database in NodeJS
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There is a second parameter for the callback for collection.insert that will return the doc or docs inserted, which should have _ids.
Try:
collection.insert(objectToInsert, function(err,docsInserted){
console.log(docsInserted);
});
and check the...
Get the new record primary key ID from MySQL insert query?
...se the LAST_INSERT_ID() function: http://dev.mysql.com/doc/refman/5.0/en/information-functions.html#function_last-insert-id
Eg:
INSERT INTO table_name (col1, col2,...) VALUES ('val1', 'val2'...);
SELECT LAST_INSERT_ID();
This will get you back the PRIMARY KEY value of the last row that you inser...
Need to list all triggers in SQL Server database with table name and table's schema
..._id
WHERE sysobjects.type = 'TR'
EDIT:
Commented out join to sysusers for query to work on AdventureWorks2008.
SELECT
sysobjects.name AS trigger_name
,USER_NAME(sysobjects.uid) AS trigger_owner
,s.name AS table_schema
,OBJECT_NAME(parent_obj) AS table_name
,OBJECTPROP...
Distributed sequence number generation?
...anner. You could look into things like network broadcasts, windowed ranges for each worker, and distributed hash tables for unique worker IDs, but it's a lot of work.
Unique IDs are another matter, there are several good ways of generating unique IDs in a decentralized manner:
a) You could use Twi...
Optimal way to concatenate/aggregate strings
... facilitate this would be nice. I've tried solutions using COALESCE and FOR XML , but they just don't cut it for me.
7 A...