BTEQ operator for dagster-teradata

[MT255026]

Support for BTEQ on dagster-teradata:

BTEQ Operator

The bteq_operator method enables execution of Teradata BTEQ commands either locally or on a remote machine via SSH. It supports direct SQL input or file-based scripts, custom encoding, timeout controls, and both password and SSH key authentication for remote execution.

Key Features

• Local or remote BTEQ execution
• Accepts SQL string or file path (mutually exclusive)
• Supports custom script/session encoding
• Timeout and return code handling
• Remote authentication via password or SSH key

Parameters

• sql: SQL commands to execute directly (optional, mutually exclusive with file_path)
• file_path: Path to SQL script file (optional, mutually exclusive with sql)
• remote_host: Hostname/IP for remote execution (optional)
• remote_user: Username for remote authentication (required if remote_host is set)
• remote_password: Password for remote authentication (alternative to ssh_key_path)
• ssh_key_path: Path to SSH private key (alternative to remote_password)
• remote_port: SSH port (default: 22)
• remote_working_dir: Working directory on remote machine (default: /tmp)
• bteq_script_encoding: Encoding for BTEQ script file (default: utf-8)
• bteq_session_encoding: Encoding for BTEQ session (default: ASCII)
• bteq_quit_rc: Acceptable return code(s) for BTEQ execution (default: 0)
• timeout: Maximum execution time in seconds (default: 600)
• timeout_rc: Return code for timeout cases (optional)

[sc250072]

Couple of minor review comments needs to be addressed.

[sc250072]

Looks good to me.