Why Does My PostgreSQL INSERT Statement Fail with 'Column 'column_name' does not exist'?

Error Resolution: Understanding the "Column 'column_name' does not exist" Issue

The "INSERT COMMAND :: ERROR: column "column_name" does not exist" error arises during data insertion into a PostgreSQL table when the specified column name doesn't align with the table's actual column names.

In the provided example, the error occurs because "user_name" is not a valid column name in the "users" table. The table structure reveals the actual column names as "user_name," "name," "password," and "email." However, the "user2" value in the query's INSERT statement is treated as a column name rather than a value.

To resolve this issue, ensure that the column names specified in the INSERT statement match the table's column names. Additionally, remember to enclose character constants, such as the user names, within single quotes.

The correct query should be:

INSERT INTO users(user_name, name, password, email) VALUES ('user2', 'first last', 'password1', '[email protected]');

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