FlyData Blog

Redshift Unload: Amazon Redshift’s Unload Command
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Redshift’s UNLOAD command is a great little tool that complements Redshift’s COPY command, by doing the exact reverse function. While COPY grabs data from an Amazon s3 bucket and puts into a Redshift table for you, UNLOAD takes the result of a query, and stores the data in Amazon s3. Why would y...
Redshift Show Tables | How to List Redshift Tables
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In order to list or show all of the tables in a Redshift database, you'll need to query the PGTABLEDEF systems table. An interesting thing to note is the PG_ prefix. This is because Redshift is based off Postgres, so that little prefix is a throwback to Redshift’s Postgres origins. Running SELE...
Redshift vs. Postgres: A Detailed Comparison
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Amazon Redshift was birthed out of PostgreSQL 8.0.2. For this reason, many analysts and engineers making the move from Postgres to Redshift feel a certain comfort and familiarity about the transition. While it is true that much of the syntax and functionality crosses over, there are key differenc...
Redshift Copy: How and when to use Redshift's COPY command
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In this guide, we’ll go over the Redshift COPY command, how it can be used to import data into your Redshift database, its syntax, and a few troubles you may run into. What is the Redshift COPY command? The Redshift COPY command, funnily enough, copies data from one source and loads it into you...
Redshift Join: How to use Redshift's Join Clause
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Redshift’s JOIN clause is perhaps the second most important clause after SELECT clause, and it is used even more ubiquitously, considering how interconnected a typical application database’s tables are. Due to that connectivity between datasets, data developers require many joins to collect and p...
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