List Django database table names from external script
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I am trying to access sqlite3 database that I have in my Django project from within external script that is not part of the project.
However, the following will return an empty list:
con = sqlite3.connect('database.db')
cursor = con.cursor()
cursor.execute("SELECT name FROM sqlite_master WHERE type='table';")
print(cursor.fetchall())
Even though I have already saved some models to the database.
To check the table names, I use the following in Django shell:
>>> tables = connection.introspection.table_names()
>>> seen_models = connection.introspection.installed_models(tables)
>>> seen_models
{<class 'django.contrib.auth.models.Permission'>, <class 'django.contrib.sessions.models.Session'>, <class 'django.contrib.contenttypes.models.ContentType'>, <class 'explorer_api.models.Athlete'>, <class 'django.contrib.admin.models.LogEntry'>, <class 'django.contrib.auth.models.Group'>, <class 'explorer_api.models.Activity'>, <class 'django.contrib.auth.models.User'>}
>>> tables
['auth_group', 'auth_group_permissions', 'auth_permission', 'auth_user', 'auth_user_groups', 'auth_user_user_permissions', 'django_admin_log', 'django_content_type', 'django_migrations', 'django_session', 'explorer_api_activity', 'explorer_api_athlete']
I have not specified the table names explicitly in model's Meta, so I guess the table names are appname_modelname (explorer_api_activity and explorer_api_athlete).
But why the empty list?
python django sqlite3
asked Nov 24 '18 at 6:41
barciewiczbarciewicz
803313
add a comment |
0
I am trying to access sqlite3 database that I have in my Django project from within external script that is not part of the project.
However, the following will return an empty list:
con = sqlite3.connect('database.db')
cursor = con.cursor()
cursor.execute("SELECT name FROM sqlite_master WHERE type='table';")
print(cursor.fetchall())
Even though I have already saved some models to the database.
To check the table names, I use the following in Django shell:
>>> tables = connection.introspection.table_names()
>>> seen_models = connection.introspection.installed_models(tables)
>>> seen_models
{<class 'django.contrib.auth.models.Permission'>, <class 'django.contrib.sessions.models.Session'>, <class 'django.contrib.contenttypes.models.ContentType'>, <class 'explorer_api.models.Athlete'>, <class 'django.contrib.admin.models.LogEntry'>, <class 'django.contrib.auth.models.Group'>, <class 'explorer_api.models.Activity'>, <class 'django.contrib.auth.models.User'>}
>>> tables
['auth_group', 'auth_group_permissions', 'auth_permission', 'auth_user', 'auth_user_groups', 'auth_user_user_permissions', 'django_admin_log', 'django_content_type', 'django_migrations', 'django_session', 'explorer_api_activity', 'explorer_api_athlete']
I have not specified the table names explicitly in model's Meta, so I guess the table names are appname_modelname (explorer_api_activity and explorer_api_athlete).
But why the empty list?
python django sqlite3
asked Nov 24 '18 at 6:41
barciewiczbarciewicz
803313
2
have you used the correct name of the database?
– ruddra
Nov 24 '18 at 7:13
You're right, the above scripts work only when it is in the same folder as the database. What if I want it to be elsewhere? In such case I am currently referencing the database location like this:'/media/barciewicz/DATA/python_projects/strava/explorer_api/db.sqlite3', but this is when empty list is returned.
– barciewicz
Nov 27 '18 at 18:18
Yes its possible. Please see my answer on this. thanks.
– ruddra
Nov 28 '18 at 1:31
add a comment |
0
0
0
0
I am trying to access sqlite3 database that I have in my Django project from within external script that is not part of the project.
However, the following will return an empty list:
con = sqlite3.connect('database.db')
cursor = con.cursor()
cursor.execute("SELECT name FROM sqlite_master WHERE type='table';")
print(cursor.fetchall())
Even though I have already saved some models to the database.
To check the table names, I use the following in Django shell:
>>> tables = connection.introspection.table_names()
>>> seen_models = connection.introspection.installed_models(tables)
>>> seen_models
{<class 'django.contrib.auth.models.Permission'>, <class 'django.contrib.sessions.models.Session'>, <class 'django.contrib.contenttypes.models.ContentType'>, <class 'explorer_api.models.Athlete'>, <class 'django.contrib.admin.models.LogEntry'>, <class 'django.contrib.auth.models.Group'>, <class 'explorer_api.models.Activity'>, <class 'django.contrib.auth.models.User'>}
>>> tables
['auth_group', 'auth_group_permissions', 'auth_permission', 'auth_user', 'auth_user_groups', 'auth_user_user_permissions', 'django_admin_log', 'django_content_type', 'django_migrations', 'django_session', 'explorer_api_activity', 'explorer_api_athlete']
I have not specified the table names explicitly in model's Meta, so I guess the table names are appname_modelname (explorer_api_activity and explorer_api_athlete).
But why the empty list?
python django sqlite3
asked Nov 24 '18 at 6:41
barciewiczbarciewicz
803313
I am trying to access sqlite3 database that I have in my Django project from within external script that is not part of the project.
However, the following will return an empty list:
con = sqlite3.connect('database.db')
cursor = con.cursor()
cursor.execute("SELECT name FROM sqlite_master WHERE type='table';")
print(cursor.fetchall())
Even though I have already saved some models to the database.
To check the table names, I use the following in Django shell:
>>> tables = connection.introspection.table_names()
>>> seen_models = connection.introspection.installed_models(tables)
>>> seen_models
{<class 'django.contrib.auth.models.Permission'>, <class 'django.contrib.sessions.models.Session'>, <class 'django.contrib.contenttypes.models.ContentType'>, <class 'explorer_api.models.Athlete'>, <class 'django.contrib.admin.models.LogEntry'>, <class 'django.contrib.auth.models.Group'>, <class 'explorer_api.models.Activity'>, <class 'django.contrib.auth.models.User'>}
>>> tables
['auth_group', 'auth_group_permissions', 'auth_permission', 'auth_user', 'auth_user_groups', 'auth_user_user_permissions', 'django_admin_log', 'django_content_type', 'django_migrations', 'django_session', 'explorer_api_activity', 'explorer_api_athlete']
I have not specified the table names explicitly in model's Meta, so I guess the table names are appname_modelname (explorer_api_activity and explorer_api_athlete).
But why the empty list?
python django sqlite3
python django sqlite3
asked Nov 24 '18 at 6:41
barciewiczbarciewicz
803313
asked Nov 24 '18 at 6:41
barciewiczbarciewicz
803313
asked Nov 24 '18 at 6:41
barciewiczbarciewicz
803313
asked Nov 24 '18 at 6:41
barciewiczbarciewicz
803313
asked Nov 24 '18 at 6:41
barciewiczbarciewicz
803313
803313
2
have you used the correct name of the database?
– ruddra
Nov 24 '18 at 7:13
You're right, the above scripts work only when it is in the same folder as the database. What if I want it to be elsewhere? In such case I am currently referencing the database location like this:'/media/barciewicz/DATA/python_projects/strava/explorer_api/db.sqlite3', but this is when empty list is returned.
– barciewicz
Nov 27 '18 at 18:18
Yes its possible. Please see my answer on this. thanks.
– ruddra
Nov 28 '18 at 1:31
add a comment |
2
have you used the correct name of the database?
– ruddra
Nov 24 '18 at 7:13
You're right, the above scripts work only when it is in the same folder as the database. What if I want it to be elsewhere? In such case I am currently referencing the database location like this:'/media/barciewicz/DATA/python_projects/strava/explorer_api/db.sqlite3', but this is when empty list is returned.
– barciewicz
Nov 27 '18 at 18:18
Yes its possible. Please see my answer on this. thanks.
– ruddra
Nov 28 '18 at 1:31
2
2
have you used the correct name of the database?
– ruddra
Nov 24 '18 at 7:13
have you used the correct name of the database?
– ruddra
Nov 24 '18 at 7:13
You're right, the above scripts work only when it is in the same folder as the database. What if I want it to be elsewhere? In such case I am currently referencing the database location like this:
'/media/barciewicz/DATA/python_projects/strava/explorer_api/db.sqlite3', but this is when empty list is returned.– barciewicz
Nov 27 '18 at 18:18
You're right, the above scripts work only when it is in the same folder as the database. What if I want it to be elsewhere? In such case I am currently referencing the database location like this:
'/media/barciewicz/DATA/python_projects/strava/explorer_api/db.sqlite3', but this is when empty list is returned.– barciewicz
Nov 27 '18 at 18:18
Yes its possible. Please see my answer on this. thanks.
– ruddra
Nov 28 '18 at 1:31
Yes its possible. Please see my answer on this. thanks.
– ruddra
Nov 28 '18 at 1:31
add a comment |
1 Answer
1
active
oldest
votes
0
From comments on on the question:
Yes its possible to run this script as long as you have a valid path to the file. I have rewritten your script with minor changes like this:
import sqlite3
import os.path
try:
file_name = raw_input("Enter File Path? ")
except:
file_name = input("Enter File Path? ")
if os.path.isfile(file_name):
con = sqlite3.connect(file_name)
cursor = con.cursor()
cursor.execute("SELECT name FROM sqlite_master WHERE type='table';")
print(cursor.fetchall())
else:
print("File does not exist")
Usage:
> python sqlite_tables.py
(prompt)> Enter File Path? random/file/path
(prompt)> File does not exist
> python sqlite_tables.py
(prompt)> Enter File Path? /valid/path/to/database.db
(prompt)> [(u'django_migrations',), (u'sqlite_sequence',)...]
> python sqlite_tables.py
(prompt)> Enter File Path? ../database.db # relative path
(prompt)> [(u'django_migrations',), (u'sqlite_sequence',)...]
answered Nov 24 '18 at 7:11
ruddraruddra
16.9k42951
add a comment |
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1 Answer
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votes
1 Answer
1
active
oldest
votes
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oldest
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oldest
votes
0
From comments on on the question:
Yes its possible to run this script as long as you have a valid path to the file. I have rewritten your script with minor changes like this:
import sqlite3
import os.path
try:
file_name = raw_input("Enter File Path? ")
except:
file_name = input("Enter File Path? ")
if os.path.isfile(file_name):
con = sqlite3.connect(file_name)
cursor = con.cursor()
cursor.execute("SELECT name FROM sqlite_master WHERE type='table';")
print(cursor.fetchall())
else:
print("File does not exist")
Usage:
> python sqlite_tables.py
(prompt)> Enter File Path? random/file/path
(prompt)> File does not exist
> python sqlite_tables.py
(prompt)> Enter File Path? /valid/path/to/database.db
(prompt)> [(u'django_migrations',), (u'sqlite_sequence',)...]
> python sqlite_tables.py
(prompt)> Enter File Path? ../database.db # relative path
(prompt)> [(u'django_migrations',), (u'sqlite_sequence',)...]
answered Nov 24 '18 at 7:11
ruddraruddra
16.9k42951
add a comment |
0
From comments on on the question:
Yes its possible to run this script as long as you have a valid path to the file. I have rewritten your script with minor changes like this:
import sqlite3
import os.path
try:
file_name = raw_input("Enter File Path? ")
except:
file_name = input("Enter File Path? ")
if os.path.isfile(file_name):
con = sqlite3.connect(file_name)
cursor = con.cursor()
cursor.execute("SELECT name FROM sqlite_master WHERE type='table';")
print(cursor.fetchall())
else:
print("File does not exist")
Usage:
> python sqlite_tables.py
(prompt)> Enter File Path? random/file/path
(prompt)> File does not exist
> python sqlite_tables.py
(prompt)> Enter File Path? /valid/path/to/database.db
(prompt)> [(u'django_migrations',), (u'sqlite_sequence',)...]
> python sqlite_tables.py
(prompt)> Enter File Path? ../database.db # relative path
(prompt)> [(u'django_migrations',), (u'sqlite_sequence',)...]
answered Nov 24 '18 at 7:11
ruddraruddra
16.9k42951
add a comment |
0
0
0
From comments on on the question:
Yes its possible to run this script as long as you have a valid path to the file. I have rewritten your script with minor changes like this:
import sqlite3
import os.path
try:
file_name = raw_input("Enter File Path? ")
except:
file_name = input("Enter File Path? ")
if os.path.isfile(file_name):
con = sqlite3.connect(file_name)
cursor = con.cursor()
cursor.execute("SELECT name FROM sqlite_master WHERE type='table';")
print(cursor.fetchall())
else:
print("File does not exist")
Usage:
> python sqlite_tables.py
(prompt)> Enter File Path? random/file/path
(prompt)> File does not exist
> python sqlite_tables.py
(prompt)> Enter File Path? /valid/path/to/database.db
(prompt)> [(u'django_migrations',), (u'sqlite_sequence',)...]
> python sqlite_tables.py
(prompt)> Enter File Path? ../database.db # relative path
(prompt)> [(u'django_migrations',), (u'sqlite_sequence',)...]
answered Nov 24 '18 at 7:11
ruddraruddra
16.9k42951
From comments on on the question:
Yes its possible to run this script as long as you have a valid path to the file. I have rewritten your script with minor changes like this:
import sqlite3
import os.path
try:
file_name = raw_input("Enter File Path? ")
except:
file_name = input("Enter File Path? ")
if os.path.isfile(file_name):
con = sqlite3.connect(file_name)
cursor = con.cursor()
cursor.execute("SELECT name FROM sqlite_master WHERE type='table';")
print(cursor.fetchall())
else:
print("File does not exist")
Usage:
> python sqlite_tables.py
(prompt)> Enter File Path? random/file/path
(prompt)> File does not exist
> python sqlite_tables.py
(prompt)> Enter File Path? /valid/path/to/database.db
(prompt)> [(u'django_migrations',), (u'sqlite_sequence',)...]
> python sqlite_tables.py
(prompt)> Enter File Path? ../database.db # relative path
(prompt)> [(u'django_migrations',), (u'sqlite_sequence',)...]
answered Nov 24 '18 at 7:11
ruddraruddra
16.9k42951
edited Nov 28 '18 at 1:31
answered Nov 24 '18 at 7:11
ruddraruddra
16.9k42951
answered Nov 24 '18 at 7:11
ruddraruddra
16.9k42951
answered Nov 24 '18 at 7:11
ruddraruddra
16.9k42951
16.9k42951
add a comment |
add a comment |
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2
have you used the correct name of the database?
– ruddra
Nov 24 '18 at 7:13
You're right, the above scripts work only when it is in the same folder as the database. What if I want it to be elsewhere? In such case I am currently referencing the database location like this:
'/media/barciewicz/DATA/python_projects/strava/explorer_api/db.sqlite3', but this is when empty list is returned.– barciewicz
Nov 27 '18 at 18:18
Yes its possible. Please see my answer on this. thanks.
– ruddra
Nov 28 '18 at 1:31