/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

5 votes139 views3 answers
Python add
Python
6 votes135 views1 answer
Numpy example
Python
1 vote195 views1 answer
Max pooling tf keras
Python
0 vote140 views1 answer
Torch.tensor.expand
Python
3 votes190 views3 answers
Gcd function in python
Python
43 votes170 views6 answers
Reverse string python
Python
0 vote140 views1 answer
How to check type inside a list in python
Python
1 vote99 views1 answer
Python get current process id
Python
2 votes137 views1 answer
How to replace a word in csv file using python
Python
0 vote139 views1 answer
Sendgrid send email to multiple recipients python
Python