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How can I list the tables in a SQLite database file that was opened with ATTACH?
The .tables, and .schema "helper" functions don't look into ATTACHed databases: they just query the SQLITE_MASTER table for the "main" database. Consequently, if you used ATTACH some_file.db AS my_db; then you need to do SELECT name FROM my_db.sqlite_master WHERE type='table'; Note that temporary taRead more
The
.tables
, and.schema
“helper” functions don’t look into ATTACHed databases: they just query theSQLITE_MASTER
table for the “main” database. Consequently, if you usedthen you need to do
Note that temporary tables don’t show up with
See less.tables
either: you have to listsqlite_temp_master
for that:Macbook git user config global
Macbook git user config global: $ git config --global user.name "John Doe" $ git config --global user.email johndoe@example.com
Macbook git user config global:
See lessHow to Configure Git
How to set important Git config global properties: There are a number of ways to edit the global git config file. One way is to add properties through the command line. The global git config email and username properties are often set in the following way: git config --global user.name cameronmcnz gRead more
How to set important Git config global properties:
There are a number of ways to edit the global git config file. One way is to add properties through the command line. The global git config email and username properties are often set in the following way:
See lessHow to find the IMEI number on Android device
Find the IMEI number on an Android by dialing Open Phone app on your Android. Dial "*#06#" on your keypad. to find the IMEI number on an Android via Settings Open the Settings app on your Android. Tap About Phone. Scroll down and you'll find the number listed under "IMEI."
Find the IMEI number on an Android by dialing
to find the IMEI number on an Android via Settings
What is the minimum salary required for SBI credit card?
Applicant needs to be able to demonstrate a regular source of income, with a minimum income of Rs. 2 lakh annually. For an SBI credit card, documents such as salary slips from the last 3 months and bank statements need to be provided by the applicant along with proof of identity, age and address.
Applicant needs to be able to demonstrate a regular source of income, with a minimum income of Rs. 2 lakh annually. For an SBI credit card, documents such as salary slips from the last 3 months and bank statements need to be provided by the applicant along with proof of identity, age and address.
See lessWhat does on_delete do on Django models?
CASCADE: When the referenced object is deleted, also delete the objects that have references to it (when you remove a blog post for instance, you might want to delete comments as well). SQL equivalent: CASCADE. PROTECT: Forbid the deletion of the referenced object. To delete it you will have to deleRead more
CASCADE
: When the referenced object is deleted, also delete the objects that have references to it (when you remove a blog post for instance, you might want to delete comments as well). SQL equivalent:CASCADE
.PROTECT
: Forbid the deletion of the referenced object. To delete it you will have to delete all objects that reference it manually. SQL equivalent:RESTRICT
.RESTRICT
: (introduced in Django 3.1) Similar behavior asPROTECT
that matches SQL’sRESTRICT
more accurately.SET_NULL
: Set the reference to NULL (requires the field to be nullable). For instance, when you delete a User, you might want to keep the comments he posted on blog posts, but say it was posted by an anonymous (or deleted) user. SQL equivalent:SET NULL
.SET_DEFAULT
: Set the default value. SQL equivalent:SET DEFAULT
.SET(...)
: Set a given value. This one is not part of the SQL standard and is entirely handled by Django.DO_NOTHING
: Probably a very bad idea since this would create integrity issues in your database (referencing an object that actually doesn’t exist). SQL equivalent:NO ACTION
How to Convert bytes to a string?
You need to decode the bytes object to produce a string: >>> b"abcde" b'abcde' # utf-8 is used here because it is a very common encoding, but you # need to use the encoding your data is actually in. >>> b"abcde".decode("utf-8") 'abcde'
You need to decode the bytes object to produce a string:
See less>>> b"abcde" b'abcde' # utf-8 is used here because it is a very common encoding, but you # need to use the encoding your data is actually in. >>> b"abcde".decode("utf-8") 'abcde'
What is the best example of IoT device?
There are several top devices in the market. Smart Mobiles, smart refrigerators, smart watches, smart fire alarm, smart door lock, smart bicycle, medical sensors, fitness trackers etc
There are several top devices in the market. Smart Mobiles, smart refrigerators, smart watches, smart fire alarm, smart door lock, smart bicycle, medical sensors, fitness trackers etc
See lesswhat is a domain name?
The domain name is the address of your website that people type in the browser URL bar to visit your website.
The domain name is the address of your website that people type in the browser URL bar to visit your website.
See lessWhat was the first game played in space?
The first game played in space is "Tetris"
The first game played in space is “Tetris“
See less