Atleast this is what I found from my experience. Note: Do not use to_date(current_date, 'YYYYMMDD') since redshift has a bug with this function and handles some dates wrong. Select to_char(add_months(to_date(current_date, 'YYYY-MM-DD'), -1), 'YYYYMMDD') to add months and convert date to integer use in redshift: Any suggestions are appreciated.-to select the current date and timestamp in redshift use: What should I do? Also since the table is huge, it's taking a lot of time to query and this is just 10% of what I want to achieve with the whole query. tochar (currentdate,'YYYYMMDD') '20220407' Similarly, to convert a string to date use the Redshift todate function. To convert a date to a string use the Redshift tochar function as below. ORDER BY datex DESC) y ON x.datex = y.datex The default Redshift date format is YYYY-MM-DD. WHERE mp_event_name = 'home_page_load_confirm' AND datex between CURRENT_DATE AND CURRENT_DATE - INTERVAL '7 DAY' For example, if you want to find the date after 12 months from the startdate from our SUBSCRIPTION table, you can use the below query. It returns the date after adding the number of specified months. To view a list of supported time zone names, run the following command. Redshift Date functions: ADDMONTHS function This function takes a date and an integer as arguments. When an input value includes a time zone, Amazon Redshift uses the time zone to convert the value to UTC and stores the UTC value. redshift sql currentdate getdate () performance issue Ask Question 1 I would like to know whether using the currentdate or getdate () function on redshift SQL would lower the query performance compared to using '' directly, for example. Compares two dates and returns 0 if the dates are identical, 1 if date1 is greater, and -1 if date2 is greater. Example 1: select from table a where time > currentdate - 1 and time < currentdate. ORDER BY datex DESC) x JOIN (SELECT CAST(mp_date AS DATE) AS datex, mp_event_name, COUNT(DISTINCT mp_device_id) AS Page_load Use the TIMESTAMPTZ data type to input complete timestamp values that include the date, the time of day, and a time zone. Returns a date in the current session time zone (UTC by default) for the start of the current transaction. I would like to know whether using the currentdate or getdate () function on redshift SQL would lower the query performance compared to using '' directly, for example. WHERE mp_event_name = 'email_page_submit' AND datex between CURRENT_DATE AND CURRENT_DATE - INTERVAL '7 DAY' SELECT x.datex, Signups, Page_load FROM (SELECT CAST (mp_date AS DATE) AS datex, mp_event_name, COUNT(DISTINCT mp_device_id) AS Signups Syntax GETDATE() The parentheses are required.
It returns the start date or time of the current statement, even when it is within a transaction block.
Redshift current date pdf#
I keep on getting the error of no results when I join and add a time filter in where clause. Documentation Amazon Redshift Database Developer Guide GETDATE function PDF RSS GETDATE returns the current date and time in the current session time zone (UTC by default). create temp table datedummy1 (days int) as select datediff ('day', '', currentdate) The above statement will create a temp table called datedummy1 with the dat diff of to. I've been trying to filter the data for the last X number of days.Īll these columns work as standalone results when I remove the time filter from the where clause. Create a temp table that contains the start and end dates of the date range so that you can calculate a date diff from the start and end dates >.
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