Why Does My Postgres DELETE Query Fail with 'column 'does not exist'?

Resolving PostgreSQL DELETE statement error: "Column does not exist"

When performing a delete operation in a PostgreSQL database, I encountered the error message "Column "does not exist". The error statement is as follows:

<code class="language-sql">delete from "Tasks" where id = "fc1f56b5-ff41-43ed-b27c-39eac9354323";</code>

This statement intends to delete a record from the "Tasks" table based on a specific "id" value. However, the error states that the system interprets "fc1f56b5-ff41-43ed-b27c-39eac9354323" as a column name rather than an identifier.

The cause of this issue is inconsistent usage of quotes. In SQL, double quotes (") represent identifiers (e.g., table names, column names), while single quotes (') contain character constants. In this statement, double quotes are used to define both the table name and the "id" to be compared "Value.

To resolve this issue, make sure that character constants are properly enclosed in single quotes and identifiers are still enclosed in double quotes. The following corrected statement should execute successfully:

<code class="language-sql">delete from "Tasks" where id = 'fc1f56b5-ff41-43ed-b27c-39eac9354323';</code>

The above is the detailed content of Why Does My Postgres DELETE Query Fail with 'column 'does not exist'?. For more information, please follow other related articles on the PHP Chinese website!