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MySQL Creating tables with Foreign Keys giving errno: 150
...h a value in the Parent table PK column(s). Check this with a query like:
SELECT COUNT(*) FROM Child LEFT OUTER JOIN Parent ON Child.FK = Parent.PK
WHERE Parent.PK IS NULL;
This must return zero (0) unmatched values. Obviously, this query is an generic example; you must substitute your table nam...
How does “cat
...1. Assign multi-line string to a shell variable
$ sql=$(cat <<EOF
SELECT foo, bar FROM db
WHERE foo='baz'
EOF
)
The $sql variable now holds the new-line characters too. You can verify with echo -e "$sql".
2. Pass multi-line string to a file in Bash
$ cat <<EOF > print.sh
#!/bin...
How do I merge my local uncommitted changes into another Git branch?
...check the various stash made in different branch
git stash apply x # to select the right one
As commented by benjohn (see git stash man page):
To also stash currently untracked (newly added) files, add the argument -u, so:
git stash -u
...
How to list of all the tables defined for the database when using active record?
...
Don't know about active record, but here's a simple query:
select table_name
from INFORMATION_SCHEMA.Tables
where TABLE_TYPE = 'BASE TABLE'
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How to count objects in PowerShell?
... @Shameer While we're at it, one can use Get-Alias | Measure-Object | Select-Object -ExpandProperty Count to get rid of % and {}. What is easier to write and read is for another discussion.
– LosManos
May 7 '18 at 12:08
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What are all the differences between src and data-src attributes?
...that can contain a URL, then use data-src or any data-xxx that you want to select.
MDN documentation on data-xxxx attributes: https://developer.mozilla.org/en-US/docs/DOM/element.dataset
Example of src on an image tag where the image loads the JPEG for you and displays it:
<img id="myImage" sr...
How to get a string after a specific substring?
...ram.
This script generates random sentences with and without the randomly selected delimiter present, and if present, at different positions in the generated sentence, runs the tests in random order with repeats (producing the fairest results accounting for random OS events taking place during test...
Entity Framework Join 3 Tables
...equals t.TID
where e.OwnerID == user.UID
select new {
UID = e.OwnerID,
TID = e.TID,
Title = t.Title,
EID = e.EID
}).Take(10);
And you should probably add orderby c...
AngularJS disable partial caching on dev machine
...ew.
A drop down menu symbol will appear next to "Net" (title of the view).
Select "Disable Browser Cache" from the drop down menu.
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Django: How to manage development and production settings?
...ings if necessary (by adding the modifications below that stanza).
I then select which settings files to use by linking it in to settings.py:
ln -s settings.development.py settings.py
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