/Python/Sqlalchemy function for default value for column

Sqlalchemy function for default value for column

def mydefault(context):
    return context.get_current_parameters()['counter'] + 12

t = Table('mytable', meta,
    Column('counter', Integer),
    Column('counter_plus_twelve', Integer, default=mydefault, onupdate=mydefault)
)

Source: docs.sqlalchemy.org

Sqlalchemy function for default value for column

# a function which counts upwards
i = 0
def mydefault():
    global i
    i += 1
    return i

t = Table("mytable", meta,
    Column('id', Integer, primary_key=True, default=mydefault),
)

Source: docs.sqlalchemy.org

Similar codes

10 votes165 views5 answers
Create pickle file python
Python
1 vote207 views2 answers
Python single line comment
Python
3 votes159 views1 answer
Python insert image
Python
4 votes209 views2 answers
Python get appdata path
Python
0 vote262 views3 answers
How to create a User and User profile in django rest framework
Python Django
0 vote174 views1 answer
Popup flutter
Python
4 votes167 views2 answers
Median of a list python
Python
0 vote164 views1 answer
Send command dynamo civid
Python
0 vote171 views1 answer
Sound alerts in Jupyter for code completion and exceptions
Python
1 vote231 views1 answer
Django urlpattern
Python Django