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Posts on tips and tricks, using and learning about SQL for database development and analysis.

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Understanding Subqueries in SQL and Building JSON Directly in PostgreSQL

Understanding Subqueries in SQL and Building JSON Directly in PostgreSQL

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5 min read
Understanding ACID Properties in SQL Transactions

Understanding ACID Properties in SQL Transactions

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2 min read
🚀 Indexing, Hashing & Query Optimization in SQL (Tutorial Example on Students Table)

🚀 Indexing, Hashing & Query Optimization in SQL (Tutorial Example on Students Table)

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2 min read
Demystifying Normalization in RDBMS: From 1NF to 3NF

Demystifying Normalization in RDBMS: From 1NF to 3NF

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5 min read
Indexing, Hashing, and Query

Indexing, Hashing, and Query

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1 min read
SQLite dot commands: read file or standard output

SQLite dot commands: read file or standard output

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3 min read
Fuzzy String Matching in PostgreSQL with pg_trgm (Trigram Search Tutorial)

Fuzzy String Matching in PostgreSQL with pg_trgm (Trigram Search Tutorial)

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2 min read
Suppose you have duplicate rows in a table. How can you delete all duplicates but keep one copy using SQL only?

Suppose you have duplicate rows in a table. How can you delete all duplicates but keep one copy using SQL only?

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1 min read
NORMALIZATION

NORMALIZATION

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3 min read
From Kafka to Clean Tables: Building a Confluent Snowflake Pipeline with Streams & Tasks

From Kafka to Clean Tables: Building a Confluent Snowflake Pipeline with Streams & Tasks

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10 min read
Beyond Functional: Writing Professional and Performant SQL Queries

Beyond Functional: Writing Professional and Performant SQL Queries

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2 min read
The Ultimate Guide to SQL Joins and Subqueries Explained

The Ultimate Guide to SQL Joins and Subqueries Explained

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7 min read
An Introduction to Commonly Used PL/SQL Data Types

An Introduction to Commonly Used PL/SQL Data Types

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4 min read
Implementing Hierarchical Data Structures in PostgreSQL: LTREE vs Adjacency List vs Closure Table

Implementing Hierarchical Data Structures in PostgreSQL: LTREE vs Adjacency List vs Closure Table

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18 min read
SQLite dot commands: html tables with output and once

SQLite dot commands: html tables with output and once

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2 min read
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