function::user_mode - Linux

Overview

The function::user_mode command is a modern function query tool designed to provide detailed information about user-defined functions (UDFs) in a Linux environment. It offers a comprehensive and customizable way to inspect UDFs, making it an essential tool for debugging, performance analysis, and general function management.

Syntax

function::user_mode [-h] [-v] [-q] [-d <dbname>] [-f <funcname>] [-p <param>]

Options/Flags

• -h: Display help message.
• -v: Enable verbose output, providing additional details.
• -q: Suppress output, only displaying the function name.
• -d <dbname>: Specify the target database name.
• -f <funcname>: Specify the UDF name to query.
• -p <param>: Specify a parameter to filter results by.

Examples

• Display basic information about all UDFs:

  function::user_mode
  

• Query a specific UDF:

  function::user_mode -f my_function
  

• List UDFs with a specific parameter:

  function::user_mode -p my_param
  

• Retrieve verbose information about a UDF in database my_db:

  function::user_mode -v -d my_db -f my_function
  

Common Issues

• Invalid database name: Ensure the specified database exists.
• UDF not found: Verify that the function name is correct.
• No output: Check if the -q option is enabled.

Integration

function::user_mode can be integrated with other commands for advanced tasks:

• Combine with grep: Filter results based on specific criteria.
• Use with sed: Manipulate output for custom formatting.
• Incorporate into scripts: Automate UDF management tasks.

Related Commands

• psql: PostgreSQL interactive terminal.
• createdb: Create a PostgreSQL database.
• dropdb: Drop a PostgreSQL database.