The 42P03 error code in PostgreSQL indicates a “duplicate_cursor” error. This error occurs when you attempt to declare a new cursor with a name that is already used by an existing cursor within the same transaction block. Cursors in PostgreSQL are like iterators that are used to retrieve a few rows at a time from …
The 42804 error code in PostgreSQL indicates a datatype mismatch, which means that the data type of one or more values does not match the expected data type. This can occur in various situations, such as during assignments, function calls, or when combining query results. Here are some common scenarios where this error might arise, …
The 57P03 error code in PostgreSQL indicates a cannot_connect_now error. This error is typically raised when the PostgreSQL database server is starting up and is not ready to accept connections or is in a state that prevents it from accepting connections, such as during recovery or shutdown. Here are some scenarios that can cause this …
The 55P04 error code in PostgreSQL, which stands for unsafe_new_enum_value_usage, is not a standard PostgreSQL error and does not appear in the official list of PostgreSQL error codes. It’s possible that this error code might be related to a specific extension or a customized version of PostgreSQL. However, generally speaking, issues related to enum types …
The 54000 error code in PostgreSQL indicates a program_limit_exceeded error. This error means that some predefined limit in the PostgreSQL system has been exceeded. There are several scenarios where this can occur, such as exceeding the maximum number of columns in a table, the maximum number of arguments in a function, or the size of …
The 42P16 error code in PostgreSQL indicates an invalid_table_definition error. This error occurs when there is a problem with the syntax or semantics of a table definition in a CREATE TABLE or ALTER TABLE statement. Common causes include specifying invalid column names, data types, constraints, or tablespace specifications. Here are examples and solutions to resolve …
The 42725 error code in PostgreSQL indicates an ambiguous_function error. This error occurs when a function call matches multiple functions with the same name but different argument types, and PostgreSQL is unable to determine which one to use based on the provided arguments. This can happen when there are overloaded functions (functions with the same …
The 42P04 error code in PostgreSQL indicates a duplicate_database error, which means you’re trying to create a new database that has the same name as an existing database. PostgreSQL requires database names to be unique within a given instance. Here are several examples of scenarios that can cause this error and how to diagnose and …
The 42883 error code in PostgreSQL indicates an undefined_function error, which means that the function you’re trying to call does not exist with the specified argument types, or it’s not available in the current schema or search path. This can happen for various reasons, such as a typo in the function name, incorrect number or …
The 42P18 indeterminate_datatype error in PostgreSQL occurs when the database engine cannot determine the data type of a parameter or a column in a query. This can happen in various scenarios, such as when using prepared statements, functions, or when performing operations that require the database to infer data types. Here are several examples of …