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How-To Guides / Redshift

How to get current date, day, month, year in Redshift database

Run the below command to get current month from current date in Redshift database. For current date: select CURRENT_DATE; For

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How-To Guides / Redshift

How to get yesterday’s date in Redshift database

Use the getdate function to get today’s date. Add or Subtract days as required from today’s date. Example, to get

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How-To Guides / Redshift

How to list all objects that are dependent on a table in Redshift

Run the below query to view all the dependent objects of a table in Redshift where schemaname and tablename are

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How-To Guides / Redshift

How to get the ddl of a view in Redshift database

DDL of views can be obtained from information_schema.views. Below is the sql to get the view definition where schemaname is

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How-To Guides / Redshift

How to list all views in a Redshift database

Run the below query to list all the non-system views in a Redshift database. select table_schema, table_name from information_schema.views where

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How-To Guides / Redshift

How to add multiple columns to a table in Redshift

Below is the syntax to add a new column to an existing table in Redshift. alter table schemaname.tablename add columnname

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How-To Guides / Redshift

How to view the sql history(recent queries) of a user in Redshift

Use the below sql statement to view the recent 100 queries run by a user ordered by the most recent

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Cheat Sheets

S3 Cheat Sheet

Simple Storage Service Unlimited storage Pay as you use Read after write consistency for PUTS Eventual consistency for overwrite puts

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How-To Guides / Redshift

How to resolve ‘ALTER TABLE ALTER COLUMN cannot run inside a transaction block’ in Redshift

You might encounter the below error while trying to modify a column in Redshift database from SQL Workbench. [Amazon](500310) Invalid

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How-To Guides / Redshift

How to change the distribution style of a table in Redshift database

You can modify the distribution style of a table using below sql command: alter table tablename alter diststyle AUTO|ALL|EVEN|KEY DISTKEY

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