INSERT INTO usage and examples

Overview

INSERT INTO adds rows, and listing columns explicitly prevents errors when schema or physical column order changes. Check required columns, defaults, unique constraints, and data types before writing. Bulk inserts also need a rollback strategy for partial failure. The example names three order columns instead of relying on every table column position.

Basic syntax

INSERT INTO orders (name, department, amount) VALUES ('Alice', 'Sales', 1200);

Examples

INSERT INTO example

Insert one order by explicitly naming name, department, and amount, then inspect the affected-row result.

Sample table

Table：orders

orders
name	department	amount
Alice	Sales	1200
Bob	IT	900
Cindy	Sales	1500
David	HR	700

Run result

orders
name	department	amount
Alice	Sales	1200
Bob	IT	900
Cindy	Sales	1500
David	HR	700
Alice	Sales	1200

Common issues

Why run SELECT before changing data?

Checking the same WHERE predicate reveals an overly broad or missing condition before rows are changed.

What happens without WHERE?

UPDATE changes every row and DELETE removes every row, so verify scope before production use.

How can I reduce operational risk?

Use a transaction, inspect affected rows, commit only after verification, and keep recoverable backups for critical data.

Keep reading

UPDATE DELETE

INSERT INTO