So here, you have seen how to find the table size and number of rows in a table in Amazon Redshift. It is useful when you want to determine the burden on your database and will provide an estimate if you are running out of memory, disk space, or computing power. Other than the ta...
If you try to do intraday updates, you will have to deal with periods of high CPU and IO from the writes slowing down your queries. If you store your data in a star or snowflake schema, you’ll also run into issues with Redshift’s serializable isolation limitations if you have multip...
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Amazon Redshift retains a great deal of metadata about the various databases within a cluster and finding a list of tables is no exception to this rule. The most useful object for this task is thePG_TABLE_DEFtable, which as the name implies, contains table definition information.Note: ThePG...
Learn how to use the COALESCE function in Amazon Redshift to handle null values effectively. This guide demonstrates how to replace null values with specified alternatives, ensuring your SQL queries provide more meaningful and accurate results.
[Report]Impact of activating "Use a single transaction when processing the queries" [rsFieldReference] The Value expression for the textbox ‘All_Custom_CPI_1’ refers to the field ‘All_Custom_CPI’. Report item expressions can only refer to fields within the current data set scope or, if...
Virtual Warehouses can be applied to store data or run queries and can perform both these jobs concurrently. Snowflake Virtual Warehouses can be scaled up or down on command and can be suspended when not in use to decrease the expenses on computing. So if a company is looking to cut down...
Redshift is a distributed data warehouse product that supports Union and Federated Queries, Integration with S3 Data Lake, and Integration with Machine Learning. It supports cluster deployment and a Serverless mode. In Serverless mode, users don’t need to manage load and resource scaling; they ca...
[Report]Impact of activating "Use a single transaction when processing the queries" [rsFieldReference] The Value expression for the textbox ‘All_Custom_CPI_1’ refers to the field ‘All_Custom_CPI’. Report item expressions can only refer to fields within the current data set scope or,...
We use Hevo’s data pipeline scheduling, models, and auto-mapping features to seamlessly move our data to the destination warehouse. We flatten certain columns from our incoming data using the Python interface in Hevo and our risk team uses Models to write SQL queries to get the required ...