Sqlite: Select Into?
In SQLite, to replicate a table, deploy CREATE TABLE followed by AS SELECT:
This instantly creates clone possessing every iota of original's structure and data.
Digging deeper: When and why use CREATE TABLE AS SELECT?
Initiating data operations
Recall the initial scene of your favorite sitcom? A fresh start, popping popcorn and prepping beverages. Similarly, CREATE TABLE AS SELECT is exactly the command whenever you're initiating actions on your data, whether it's creating test scenarios, setting up troves for report generation, or simply archiving data for future reference.
Data migration
Migrating data between SQLite databases? CREATE TABLE AS SELECT is the shortcut commandeered by Elves, saving you from the stressful quest of one-ring-to-rule-them-all data migration.
Keep an eye: Data type divergence
Expect some surprises
When Dr. Jekyll becomes Mr. Hyde — don't be taken aback. SQLite's type affinity may cause data types variants after cloning. Retain your Sherlock's hat and check for elementary discrepancies, my dear Watson.
Modulating the data model
Before you fire the gun, ensure your target isn't a moving one. Revise the design of the destination table to avoid any unexpected folly.
Plan B: INSERT INTO to the rescue
Got a table already furnished and you just want to replace some Ikea stuff? Use INSERT INTO:
Tips and tricks: Making INSERT efficient
Filtering for the needy
To boost the INSERT INTO process, fine-tune the SELECT clause to include necessary columns only. In simple terms, no need to empty your old house when you can leave the haunted wall clock behind.
Manager level bulk inserts
For hefty data transfers, consider locking the queue or batch processing to shed the delay-causing overhead weight.
Who locked the door?
Always keep in mind your database's state. How other processes might be accessing it while you carry on with your INSERT. Plan your housewarming not to clash with the neighbors'!
Conclusion
Next time cloning takes you less time than avengers to assemble, remember — practice makes perfect. Crown this answer with your vote if it helped. Elves and Dinosaurs are at stake here! Happy coding!👩💻
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