
PrestoDB Questions & Answers
Answers to your questions about PrestoDB
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Presto SQL Syntax: Learn to Write SQL Queries in Presto
Presto is powerful, but running it on your own can get complicated. If you’re looking for a managed Presto experience that can let you focus on querying your data rather … Continue reading Presto SQL Syntax: Learn to Write SQL Queries in Presto
4 Amazon Redshift Alternatives for Better Analytics
Using Amazon Redshift? If you are looking to replace Amazon Redshift due to the limitations look at the AWS Redshift Alternatives.
Redshift | 8 Frustrating Challenges to Overcome
Redshift made it easy implement data warehouse use cases in the cloud. However, there are problems with Amazon Redshift. Learn what they are.
Amazon Redshift Spectrum vs Redshift: Key Differences
Redshift vs Redshift Spectrum: in this article we’ll cover what both are, how they are used, and pros and cons.
Using AWS Redshift Spectrum in AWS Lake Formation | Ahana
Lake Formation makes it easier to set up the data lake, and to incorporate Redshift as part of the compute layer alongside other analytics tools and services.
Data Warehouse: Understanding the Types & Architecture
Data Warehouse: A Comprehensive Guide Introduction A data warehouse is a data repository that is typically used for analytic systems and Business Intelligence tools. It is typically composed of operational … Continue reading Data Warehouse: Understanding the Types & Architecture
Data Warehouse Concepts for Beginners | Ahana
Data Warehouse Concepts for Beginners A data warehouse is a relational database that is designed for query and analysis rather than for transaction processing. Typically a data warehouse contains historical … Continue reading Data Warehouse Concepts for Beginners | Ahana
AWS Redshift Limitations | Redshift Pros and Cons
Redshift is an Amazon petabyte-scale data warehouse product that is based on PostgreSQL version 8.0.2. While there are pros to Redshift, there are also cons. One of which is query limits. In this article we will dive deeper into the restrictions of Redshift including query limitations.
Benefits Of Using Managed Service For Presto | Ahana
Ahana Cloud offers a fully managed service for PrestoDB. This article will explain the benefits and need of a managed service.
AWS Athena Pricing vs Ahana Pricing
What does AWS Athena cost? Compare Price-Performance Ratio of AWS Athena vs Ahana. Understand the value of Athena and Ahana for Presto.
What is Amazon Redshift Spectrum? | Ahana
Launched in 2017, Redshift Spectrum is a feature within Redshift that enables you to query data stored in AWS S3 using SQL. Spectrum allows you to do federated queries from within the Redshift SQL query editor to data in S3, while also being able to combine it with data in Redshift.
Building a Data Lake Using Lake Formation on AWS
AWS lake formation helps users to build, manage and secure their data lakes in a very short amount of time, meaning days instead of months as is common with a traditional data lake approach.
Is Amazon Redshift Expensive?
AWS Redshift is a completely managed cloud data warehouse service with the ability to scale on-demand and is compatible with multitudes of AWS tools and technologies. AWS Redshift is considered the preferred cloud data warehouse of choice for most customers but the pricing is not simple, since it tries to accommodate different use cases and customers. Let us try to understand the pricing details of Amazon Redshift.
Presto vs Snowflake: Data Warehousing Comparisons
Snowflake is a cloud data warehouse that offers a cloud-based data storage and analytics service. Snowflake runs completely on cloud infrastructure.
AWS Redshift Data Warehouse Architecture | Ahana
Amazon Redshift is a cloud data warehouse offered as a managed service by AWS, and a popular choice for business intelligence and reporting use cases
What Is Trino? Is Trino a Database?
Heard about Trino and curious about what it is? This article breaks down what it is, how it’s started, and how Trino is used.
What Is AWS Redshift Used For | Redshift Use Cases
Amazon Redshift is one of the most widely-used services in the AWS ecosystem and is a familiar component in many cloud architectures.
ETL and ELT | What are the differences between ETL and ELT?
ETL and ELT in Data Warehousing What is the difference between ETL and ELT? What is ETL used for? If you’re looking to understand, ETL and ELT differences let’s start … Continue reading ETL and ELT | What are the differences between ETL and ELT?
The Differences Between AWS RedShift Spectrum vs Athena
AWS Redshift Spectrum vs Athena: Redshift is the storage and Redshift Spectrum is a SQL engine extension. Athena is a standalone SQL engine
How Much Does Amazon Athena Cost? | Ahana
Understanding AWS Athena Costs with Examples Athena costs can be unpredictable and hard to control. Ahana is the PrestoDB solution that gives you back control over both performance and your … Continue reading How Much Does Amazon Athena Cost? | Ahana
5 Components of Data Warehouse Architecture | Ahana
In this article we’ll look at the requirements of a Data Warehouse Architecture Learn the five components of a data warehouse.
What is a Data Lakehouse Architecture?
Overview The term Data Lakehouse has become very popular over the last year or so, especially as more customers are migrating their workloads to the cloud. This article will help … Continue reading What is a Data Lakehouse Architecture?
AWS Lake Formation for Enterprise Data Lakes | Ahana Cloud
AWS Lake Formation is a service that makes it easy to set up a secure data lake very quickly (in a matter of days), providing a governance layer for data lakes on AWS S3.
How to Use AWS Athena to Query JSON Data | 1 Easy Use Case Example
Want to query JSON files using AWS Athena? Check out this intuitive tech guide for an explanation with 1 use case example. Query JSON easily.
The Differences Between AWS Athena and AWS Glue | Ahana
Here, we are going to talk about AWS Athena vs Glue, which is an interesting pairing as they are both complementary and competitive. So, what are they exactly?
How to Query Parquet Files using Amazon Athena | Ahana
Querying Parquet Files using Amazon Athena Struggling to maintain consistent performance in Amazon Athena? Ahana is the Presto solution that gives you control and scalability. Increase the number of nodes … Continue reading How to Query Parquet Files using Amazon Athena | Ahana
AWS Lake Formation Blueprints | Amazon Blueprint Types
This article is focused on the first step and how AWS Lake Formation Blueprints can make that easy and automated. Before you can run analytics to get insights, you need your data continuously pooling into your lake!
Presto Equivalent Of mysql group_concat | group_concat Presto
Curious about the Presto equivalent of mysql group_concat? Check out this article to learn about different SQL dialetcs
How To Query Data in AWS S3 Using Athena | Ahana
Learn how to use Athena to query Amazon S3 and start running queries on your S3 data lake. Query JSON, Apache Parquet, Apache ORC, CSV, and more.
Difference Between AWS Lake Formation vs AWS Glue
AWS Lake Formation vs AWS Glue – What are the differences? Last updated: October 2022 As you start building your analytics stack in AWS, there are several AWS technologies to … Continue reading Difference Between AWS Lake Formation vs AWS Glue
Presto Platform Overview: Interactive Analytic Queries
the Presto platform is an open source distributed SQL query engine for running interactive analytic queries against data sources of all sizes.
Limitations of Amazon S3 Select | AWS Select Capabilities
Amazon S3 Select Limitations What is Amazon S3 Select? Amazon S3 Select allows you to use simple structured query language (SQL) statements to filter the contents of an Amazon S3 … Continue reading Limitations of Amazon S3 Select | AWS Select Capabilities
What is AWS Lake Formation? | Amazon S3 Lake formation
What is AWS Lake Formation? For AWS users who want to get governance on their data lake, AWS Lake Formation is a service that makes it easy to set up … Continue reading What is AWS Lake Formation? | Amazon S3 Lake formation
How does Presto work with LDAP | Presto LDAP Authentication
LDAP is an industry standard application used for directory services authentication. Learn how does Presto work with LDAP
What is Apache Ranger | Apache Ranger in Hadoop | Ahana
What is Apache Ranger? What is Apache Ranger? In a Nutshell Apache Ranger is a framework to enable, monitor and manage comprehensive data security across the data platform. It is … Continue reading What is Apache Ranger | Apache Ranger in Hadoop | Ahana
Advanced SQL Tutorial & SQL Queries Support
Presto has a wide-range of JSON functions supporting advanced SQL queries. Learn more about advancing your skill when it comes to SQL
Presto Queries Running Slow | Slow Queries & Presto Tuning | Ahana
Running Presto queries on large scale data in a data lake? If your queries are slow learn how to troubleshoot in 10 steps
Presto functions: mathematical, operators and aggregate
Presto functions. Presto offers several classes of functions and operators. Learn more about them and their use.
What is a Presto lag example?
The Presto lag function a window function that returns the value of an offset before the current row in a window. One common use case for the lag function is … Continue reading What is a Presto lag example?
How do I get the date_diff from previous rows?
To find the difference in time between consecutive dates in a result set, Presto offers window functions. Take the example table below which contains sample data of users who watched … Continue reading How do I get the date_diff from previous rows?
How do I use the approx_percentile function in Presto?
The Presto approx percentile returns an approximate percentile for values. We’ll explain how to use the function
Can I write back or update data in my Hadoop / Apache Hive cluster through Presto?
Using Presto with a Hadoop cluster for SQL analytics is pretty common especially in on premise deployments. With Presto, you can read and query data from the Hadoop datanodes but … Continue reading Can I write back or update data in my Hadoop / Apache Hive cluster through Presto?
How do I convert Unix Epoch time to a date or something more human readable with SQL?
Many times the Unix Epoch Time gets stored in the database. But this is not very human readable and conversion is required for reports and dashboards. Example of Unix Epoch … Continue reading How do I convert Unix Epoch time to a date or something more human readable with SQL?
How do I transfer data from a Hadoop / Hive cluster to a Presto cluster?
Hadoop is a system that manages both compute and data together. Hadoop cluster nodes have the HDFS file system and may also have different types of engines like Apache Hive, … Continue reading How do I transfer data from a Hadoop / Hive cluster to a Presto cluster?
Presto substring operations: How do I get the X characters from a string of a known length?
Presto provides an overloaded substring function to extract characters from a string. We will use the string “Presto String Operations” to demonstrate the use of this function. Extract last 7 … Continue reading Presto substring operations: How do I get the X characters from a string of a known length?
Spark SQL | What is Spark SQL & Spark SQL Guide | Ahana
Spark is a general purpose computation engine for large-scale data processing. Spark SQL is the Spark module for working with structured data
Query Data Lake With Presto | Presto Google Cloud | Ahana
How do I query a data lake with Presto? This article dives into how you can start querying a Data Lake with Presto
EMR Presto S3 Timeout Error | What is it?
Using AWS EMR Presto on AWS S3? Read this article to understand the timeout error – what it is and how to fix it
Running Presto Queries – Do I need to move data first?
Are you running Presto queries? A frequent question is, “Do I need to move data first?”. Learn if you can keep your data in place
Presto Sync Partition Metastore & Metadata | Presto Sync | Ahana
How do I sync my partition and metastore in Presto? Sync partition metadata is used to sync the metastore with information on the file system/s3 for the external table. Depending … Continue reading Presto Sync Partition Metastore & Metadata | Presto Sync | Ahana