category:computer
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Databricks Governance: Investigate Why Analysts Lost Access after a Production Deployment
Databricks Governance Tutorial: Access Loss Investigation Databricks Governance Tutorial: Investigate Why Analysts Lost Access after a Production Deployment using Databricks SQL This tutorial guides you through investigating why analysts lost access to a Databricks SQL endpoint following a production deployment. We’ll examine the key steps involved in tracking down the issue, focusing on user access…
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Databricks SQL: Audit Effective Grants with SHOW GRANTS
Databricks SQL: Audit Effective Grants with SHOW GRANTS Tutorial Databricks SQL: Audit Effective Grants with SHOW GRANTS This tutorial demonstrates how to use the `SHOW GRANTS` command in Databricks SQL to audit effective grants on a table. We’ll progress through three scripts, each focusing on a slightly more complex scenario. Script 1: Basic Grant Audit…
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Databricks SQL: Publish Aggregated Gold Tables
Databricks SQL Tutorial: Publish Aggregated Gold Tables Databricks SQL Tutorial: Publish Aggregated Gold Tables This tutorial guides you through publishing aggregated “gold” tables in Databricks SQL. We will build this process incrementally, focusing on the core functionality. The goal is to understand how to efficiently publish pre-calculated data for downstream consumption. Script 1: Create and…
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Databricks SQL: Use Query Hints Deliberately
Databricks SQL Tutorial: Using Query Hints Deliberately Databricks SQL Tutorial: Using Query Hints Deliberately This tutorial will guide you through using query hints in Databricks SQL. Query hints are directives you can add to your SQL queries to influence the optimizer’s choices, potentially improving performance or ensuring specific execution strategies. This tutorial focuses on demonstrating…
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Databricks SQL: Improve Delta Layout with Liquid Clustering
Databricks SQL Tutorial: Improve Delta Layout with Liquid Clustering Databricks SQL Tutorial: Improve Delta Layout with Liquid Clustering This tutorial guides you through improving the layout of a Delta table using Liquid Clustering in Databricks SQL. We’ll use a practical scenario to demonstrate the steps, focusing solely on the core functionality. Script 1: Initial Setup…
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Databricks SQL: Compact Delta Files with OPTIMIZE
Databricks SQL: Compact Delta Files with OPTIMIZE Tutorial Databricks SQL: Compact Delta Files with OPTIMIZE Tutorial This tutorial focuses on using Compact Delta Files and the OPTIMIZE command within Databricks SQL. We’ll explore how to efficiently manage and optimize your data storage for query performance. Script 1: Initial Data and Compact Delta Files This script…
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Databricks SQL: Remove Expired Files Safely with VACUUM
Databricks SQL: Remove Expired Files Safely with VACUUM Databricks SQL: Remove Expired Files Safely with VACUUM This tutorial demonstrates how to safely remove expired files from a Databricks SQL table using the VACUUM command. We’ll build upon progressively complex scenarios to illustrate best practices. Script 1: Basic VACUUM Implementation This script sets up a simple…
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Databricks SQL: Detect Data Quality Failures with SQL Metrics
Databricks SQL: Detect Data Quality Failures with SQL Metrics Databricks SQL: Detect Data Quality Failures with SQL Metrics This tutorial guides you through detecting data quality failures using SQL metrics within Databricks SQL. We’ll build three progressively complex queries to identify issues in sample data. Script 1: Detecting Null Values This script demonstrates the simplest…
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Databricks SQL: Build Idempotent Recovery and Backfill Queries
Databricks SQL: Idempotent Recovery & Backfill Databricks SQL: Build Idempotent Recovery and Backfill Queries This tutorial demonstrates building idempotent recovery and backfill queries within Databricks SQL. We will focus on the mechanics of these operations, using a simplified scenario and progressively complex queries. Idempotent recovery ensures that a query that is executed multiple times produces…
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Databricks SQL: Validate Production Tables before Publication
Databricks SQL: Validate Production Tables Before Publication Databricks SQL: Validate Production Tables Before Publication This tutorial guides you through a crucial data engineering task: validating production tables before publishing them to downstream consumers. We’ll use Databricks SQL to ensure data quality and consistency, building a robust data pipeline. This approach aligns with Data Platform Engineering…
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