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select * from SQL

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

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Populating a Vertica Database with Random Data

Populating a Vertica Database with Random Data

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4 min read
Indexing for a Scalable Serialization Isolation Level

Indexing for a Scalable Serialization Isolation Level

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5 min read
Upsert a row in a DB that doesn't use primary keys or unique constraints

Upsert a row in a DB that doesn't use primary keys or unique constraints

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3 min read
Unlock the Power of Stored Procedures and Cursors: A Project-Based Course on Database Retrieval

Unlock the Power of Stored Procedures and Cursors: A Project-Based Course on Database Retrieval

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2 min read
Relational vs. Document Databases: Key Differences, Use Cases, and Performance

Relational vs. Document Databases: Key Differences, Use Cases, and Performance

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3 min read
How to connect and query multiple databases with a single REST API

How to connect and query multiple databases with a single REST API

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3 min read
The Ultimate Database Tools for Collaborative Team Design in 2025

The Ultimate Database Tools for Collaborative Team Design in 2025

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5 min read
Structured vs. Unstructured Databases: The Ultimate Guide to Understanding the Key Differences

Structured vs. Unstructured Databases: The Ultimate Guide to Understanding the Key Differences

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3 min read
How to Secure Web Applications: Top Security Practices

How to Secure Web Applications: Top Security Practices

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3 min read
Indexes Under The Hood

Indexes Under The Hood

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14 min read
SQL Data Exploration for BoardGameGeek datasets

SQL Data Exploration for BoardGameGeek datasets

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5 min read
SQL Queries Execution Order

SQL Queries Execution Order

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3 min read
SQL INSERT INTO Statement – Overview with Examples

SQL INSERT INTO Statement – Overview with Examples

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1 min read
Simplifying SQL View Management in Laravel Migrations

Simplifying SQL View Management in Laravel Migrations

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3 min read
How to pass an Array of Structs in Bigquery's parameterized queries

How to pass an Array of Structs in Bigquery's parameterized queries

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3 min read
How to Create a Pivot Table in SQL Server

How to Create a Pivot Table in SQL Server

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1 min read
ACID properties in SQL

ACID properties in SQL

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1 min read
Materialized View in SQL

Materialized View in SQL

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5 min read
SQL vs. NoSQL: Key Differences, Use Cases, and Choosing the Right Database for Your Project

SQL vs. NoSQL: Key Differences, Use Cases, and Choosing the Right Database for Your Project

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5 min read
B-tree index in ORACLE SQL

B-tree index in ORACLE SQL

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2 min read
Associative Arrays in PL/SQL

Associative Arrays in PL/SQL

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3 min read
Optimizing SQL Queries

Optimizing SQL Queries

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5 min read
Concurrency Issues in SQL and Distributed Systems

Concurrency Issues in SQL and Distributed Systems

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25 min read
Difference Between Varray and Nested Table in PLSQL

Difference Between Varray and Nested Table in PLSQL

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2 min read
Sequence in SQL | PART 2

Sequence in SQL | PART 2

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3 min read
Understanding SQL Queries: A Beginner’s Guide pt1

Understanding SQL Queries: A Beginner’s Guide pt1

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4 min read
Partitioning in Oracle SQL

Partitioning in Oracle SQL

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2 min read
B-Tree Index and Bitmap Index in ORACLE SQL

B-Tree Index and Bitmap Index in ORACLE SQL

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2 min read
Criando um Simulador de Banco de Dados em Rust: Parsing, Compilação e Execução de Consultas SQL

Criando um Simulador de Banco de Dados em Rust: Parsing, Compilação e Execução de Consultas SQL

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3 min read
SQL 101: Introduction to Structured Query Language

SQL 101: Introduction to Structured Query Language

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3 min read
Oracle SQL - Cardinality & Cost

Oracle SQL - Cardinality & Cost

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2 min read
CPU SIMULATOR

CPU SIMULATOR

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1 min read
SQL Query Compilation

SQL Query Compilation

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1 min read
Indexing Operation flow structure in ORACLE SQL

Indexing Operation flow structure in ORACLE SQL

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2 min read
Calculate the highest salary in each department in SQL

Calculate the highest salary in each department in SQL

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4 min read
Handling Data in SQL: Signed vs. Unsigned Types

Handling Data in SQL: Signed vs. Unsigned Types

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1 min read
Unlock Your Database Skills: 'Add Student Personal Information' Project

Unlock Your Database Skills: 'Add Student Personal Information' Project

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2 min read
Use Transactions When Manually Accessing SQL Databases

Use Transactions When Manually Accessing SQL Databases

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3 min read
Query Optimization in PL/SQL

Query Optimization in PL/SQL

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4 min read
View with Join Condition in SQL

View with Join Condition in SQL

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2 min read
My first CLI.

My first CLI.

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3 min read
Troubleshooting PostgreSQL Low Free Memory

Troubleshooting PostgreSQL Low Free Memory

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11 min read
Exceptional Handling in PLSQL | Main Part

Exceptional Handling in PLSQL | Main Part

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4 min read
SQL ain't that Scary

SQL ain't that Scary

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11 min read
Demystifying SQLMap: A Practical Guide to Web and SQL Injection Testing

Demystifying SQLMap: A Practical Guide to Web and SQL Injection Testing

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2 min read
Named Calling Notations in PLSQL

Named Calling Notations in PLSQL

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2 min read
Stored procedure in PLSQL

Stored procedure in PLSQL

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3 min read
CURSOR in PLSQL | Best Explanation

CURSOR in PLSQL | Best Explanation

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3 min read
sql joins: moving in together

sql joins: moving in together

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3 min read
Personal Knowledge Graphs in AI RAG on user phone

Personal Knowledge Graphs in AI RAG on user phone

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9 min read
🚀 Boosting TPC-H Q2 Query Performance by 1000x times: PawSQL Optimization Techniques

🚀 Boosting TPC-H Q2 Query Performance by 1000x times: PawSQL Optimization Techniques

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4 min read
Supabase | Seeding data: The Problem (ERROR: SQLSTATE 22021) and Solutions

Supabase | Seeding data: The Problem (ERROR: SQLSTATE 22021) and Solutions

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2 min read
VARRAY in PLSQL Functions | LIMIT | COUNT | EXTEND

VARRAY in PLSQL Functions | LIMIT | COUNT | EXTEND

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2 min read
GETTING STARTED WITH SQL AT LUX ACADEMY

GETTING STARTED WITH SQL AT LUX ACADEMY

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1 min read
Employee Management System Using SQL

Employee Management System Using SQL

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4 min read
BULK COLLECT in PL/SQL

BULK COLLECT in PL/SQL

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5 min read
%TYPE and %ROWTYPE Attributes in PLSQL

%TYPE and %ROWTYPE Attributes in PLSQL

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2 min read
Dynamic SQL

Dynamic SQL

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2 min read
SQL 101: Introduction to Structured Query Language

SQL 101: Introduction to Structured Query Language

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4 min read
Difference between UNION and UNION ALL in SQL

Difference between UNION and UNION ALL in SQL

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4 min read
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