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Understanding Directory Tables in Snowflake

15 Inputs
30 Minutes
Intermediate
scenario poster
Industry
general
Skills
data-governance
Tools
snowflake

Learning Objectives

Understand the role of Directory Tables in tracking file metadata in Snowflake.
Learn how to enable a Directory Table on both external and internal stages.
Identify the limitations and best practices for using Directory Tables effectively.

Overview

Vinay, a Data Engineer at GlobalMart, discovered missing files in an external stage but had no way to verify if they were ever uploaded. Rahul, the Senior Architect, introduced Directory Tables, which track file metadata even after deletion.

Through their discussion, Vinay learned how to enable, query, and refresh Directory Tables to improve file tracking. This lesson explores how they enhance visibility, prevent debugging issues, and ensure better control over staged files in Snowflake.

Prerequisites

  • Knowledge of Snowflake Data Architecture
  • Familiarity with Snowflake Object Model
  • Basic knowledge of Data Loading in Snowflake
  • Awareness of access control model in Snowflake