Provides the number of columns or fields in each record (record corresponds to each line). Each line is demarcated by RS which defaults to newline.
cat > file1
Harley Quinn Loves Joker
Batman Loves Wonder Woman
Superman is not dead
Why is everything I type four fielded!?
awk '{print NF}' ...
Examples of numeric fields are given:
AutoField
An auto-incrementing integer generally used for primary keys.
from django.db import models
class MyModel(models.Model):
pk = models.AutoField()
Each model gets a primary key field (called id) by default. Therefore, it is not necessary t...
This is a specialized field, used to store binary data. It only accepts bytes. Data is base64 serialized upon storage.
As this is storing binary data, this field cannot be used in a filter.
from django.db import models
class MyModel(models.Model):
my_binary_data = models.BinaryField()
...
@Entity
class Note {
@Id
Integer id;
@Basic
String note;
@Transient
String parsedNote;
String readParsedNote() {
if (parsedNote == null) { /* initialize from note */ }
return parsedNote;
}
}
If your class needs fields that should ...
perl -lane'print "$F[0] $F[-1]"' data.txt
# prints the first and the last fields of a space delimited record
CSV example:
perl -F, -lane'print "$F[0] $F[-1]"' data.csv
db.posts.find().forEach(function(doc){
if(doc.oldfield){
// the false, true at the end refers to $upsert, and $multi, respectively
db.accounts.update({_id: doc._id}, {$unset: {'oldfield': "" }}, false, true);
}
});
Two important things to note when adding fields to a Pivot Table are Orientation and Position. Sometimes a developer may assume where a field is placed, so it's always clearer to explicitly define these parameters. These actions only affect the given Pivot Table, not the Pivot Cache.
Dim thisPivot ...
