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How to do INSERT into a table records extracted from another table
...O T1 FROM Table1
GROUP BY LongIntColumn1);
It will create a new table -> T1 with the extracted information
Serializing with Jackson (JSON) - getting “No serializer found”?
...jectMapper.setVisibility(JsonMethod.FIELD, Visibility.ANY);
For Jackson >2.0:
myObjectMapper.setVisibility(PropertyAccessor.FIELD, Visibility.ANY);
For more information and details on related configuration options, I recommend reviewing the JavaDocs on ObjectMapper.setVisibility().
...
Comment shortcut Android Studio
...e configured (and reviewed) via the Settings dialog, accessible via File -> Settings.
Once this dialog appears, to review (and/or add) a shortcut, do the following:
Select Keymap in the list on the left. Note that there is a "Keymaps" option, and depending on the original selection, shortcut...
Moment.js - how do I get the number of years since a date, not rounded up?
...the month to January for both dates (the provided date and the present):
> moment("02/26/1978", "MM/DD/YYYY").month(0).from(moment().month(0))
"34 years ago"
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...
nullable object must have a value
...l in your lambda.
Example:
MyEnum? type = null;
Entities.Table.Where(a => type == null ||
a.type == (int)type).ToArray(); // Exception: Nullable object must have a value
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Mongoose, Select a specific field with find
...
Query
db.collection.find({},
{
"_id": 0,
"name": 1
}).exec((Result)=>{
console.log(Result);
})
Output:
[
{
"name": "peter"
},
{
"name": "john"
},
{
"name": "joseph"
}
]
Working sample playground
link
...
Git fatal: Reference has invalid format: 'refs/heads/master
...erences from git's packed-refs file
awk '!/conflicted/' .git/packed-refs > temp && mv temp .git/packed-refs
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Does Java have a path joining method? [duplicate]
... final String path;
if(pathElements == null || pathElements.length == 0)
{
path = File.separator;
}
else
{
final StringBuilder builder;
builder = new StringBuilder();
for(final String pathElement : pathElem...
How do I use brew installed Python as the default Python?
...he following command gives a better picture:
brew doctor
Output:
==> /usr/bin occurs before /usr/local/bin This means that system-provided programs will be used instead of those provided by
Homebrew. This is an issue if you eg. brew installed Python.
Consider editing your .bash_prof...
Prevent a webpage from navigating away using JavaScript
... addEventListener APIs.
window.addEventListener('beforeunload', (event) => {
// Cancel the event as stated by the standard.
event.preventDefault();
// Chrome requires returnValue to be set.
event.returnValue = '';
});
Source: https://developer.mozilla.org/en-US/docs/Web/Events/beforeun...