Why Does My PostgreSQL INSERT Command Fail with 'ERROR: column 'value' does not exist'?

"INSERT COMMAND :: ERROR: column "value" does not exist" Explained

When attempting to insert data into a PostgreSQL table using an INSERT command, you may encounter the error "ERROR: column "value" does not exist." This issue arises when character constants (which represent string values in SQL) are not enclosed within single quotes (').

To resolve this issue, modify the INSERT command to use single quotes around the values being inserted. For instance, consider the code provided in the question:

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

The correct syntax should be:

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

By enclosing character constants within single quotes, PostgreSQL will recognize them as strings and insert them into the appropriate columns.

Remember, character constants in PostgreSQL are delimited by single quotes. Double quotes should only be used for identifiers like table names or column names. By adhering to these syntax rules, you can prevent errors like "column "value" does not exist" and successfully insert data into your PostgreSQL tables.

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