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SQL INSERT Function

Quick summary: The SQL INSERT statement adds new rows to a table.

SQL INSERT Syntax 

INSERT INTO table_name (column1, column2) VALUES (value1, value2)
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SQL INSERT Basic examples 

INSERT INTO users (email, created_at) VALUES ('a@test.com', NOW());
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Output:
1 row inserted

Inserts a single row.

SQL INSERT Real-world usage 

INSERT INTO logs (message) VALUES ('User logged in');
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Output:
1 row inserted

Stores application events.

SQL INSERT Edge cases 

INSERT INTO users VALUES ();
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Output:
SQL error

INSERT requires valid values.

SQL INSERT Common mistakes

Not specifying column names

Column order may change.

Incorrect
INSERT INTO users VALUES ('a@test.com');
Correct
INSERT INTO users (email) VALUES ('a@test.com');

Always specify columns.

SQL INSERT Frequently Asked Questions

What does INSERT do in SQL?

Adds new rows to a table.

Basic syntax of INSERT?

INSERT INTO table (columns) VALUES (...).

Use case of INSERT?

Adding new data.

Can insert multiple rows?

Yes.

Common mistake?

Mismatched columns and values.

Handles NULL?

Yes.

Performance?

Batch insert is faster.

Used with SELECT?

Yes (INSERT INTO SELECT).

Safe?

Use prepared statements.

Auto increment?

Handled automatically.

Rollback possible?

Yes, in transactions.

Best practice?

Specify columns explicitly.

SQL INSERT Related SQL Keywords