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

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Testing Is a Cross-Cutting Concern. So Are Databases

Testing Is a Cross-Cutting Concern. So Are Databases

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4 min read
Flexible interval aggregation:From SQL to SPL

Flexible interval aggregation:From SQL to SPL

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2 min read
Import file in SQL Server

Import file in SQL Server

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2 min read
Uncertain number but regular column to row conversion:From SQL to SPL#5

Uncertain number but regular column to row conversion:From SQL to SPL#5

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2 min read
Bulk Insert/Update task

Bulk Insert/Update task

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3 min read
Data Analysis Showdown: Comparing SQL, Python, and esProc SPL

Data Analysis Showdown: Comparing SQL, Python, and esProc SPL

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5 min read
13 Basic Terms In SQL That Basically Ask in Interview.

13 Basic Terms In SQL That Basically Ask in Interview.

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4 min read
How to build multi-tenancy in PostgreSQL for developing SaaS applications?

How to build multi-tenancy in PostgreSQL for developing SaaS applications?

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4 min read
Complement a certain average value to ensure that the total sum remains unchanged:SQL VS SPL

Complement a certain average value to ensure that the total sum remains unchanged:SQL VS SPL

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2 min read
Amazing Structured Outputs with Snowflake's COMPLETE Function

Amazing Structured Outputs with Snowflake's COMPLETE Function

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4 min read
Stop Being Afraid of Databases

Stop Being Afraid of Databases

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3 min read
Migrating from MySQL to PostgreSQL Key Query Differences and Considerations

Migrating from MySQL to PostgreSQL Key Query Differences and Considerations

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3 min read
Create an Auto-Incrementing Version Column With PostgreSQL Triggers

Create an Auto-Incrementing Version Column With PostgreSQL Triggers

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6 min read
[SQL] Essential Terms in the Relational Database Model and Characteristics of a relation

[SQL] Essential Terms in the Relational Database Model and Characteristics of a relation

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3 min read
Streaming SQL in Stateful DataFlows

Streaming SQL in Stateful DataFlows

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2 min read
PostgreSql Tasks - Case study:1

PostgreSql Tasks - Case study:1

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2 min read
[SQL] - Inner Join, Left Join, Non-Equi Join, Self Join

[SQL] - Inner Join, Left Join, Non-Equi Join, Self Join

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5 min read
ucwords di mysql

ucwords di mysql

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1 min read
Like IDE for FlinkSQL: Support Pycharm! FlikSQLHelper v2025.1.0 released

Like IDE for FlinkSQL: Support Pycharm! FlikSQLHelper v2025.1.0 released

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1 min read
Choosing Integer Types in MySQL & PostgreSQL

Choosing Integer Types in MySQL & PostgreSQL

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4 min read
Basics of Animal Tracking Databases

Basics of Animal Tracking Databases

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4 min read
Using IRIS and Presto for high-performance and scalable SQL queries

Using IRIS and Presto for high-performance and scalable SQL queries

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10 min read
Choice of Table Column Types and Order When Migrating to PostgreSQL

Choice of Table Column Types and Order When Migrating to PostgreSQL

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2 min read
Complement a certain average value to ensure that the total sum remains unchanged — From SQL to SPL #3

Complement a certain average value to ensure that the total sum remains unchanged — From SQL to SPL #3

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2 min read
SQL Data Comparison: What It Is and Why It Matters

SQL Data Comparison: What It Is and Why It Matters

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1 min read
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