BigQuery StandardSQL: Last 7 Days using _TABLE_SUFFIX

Question

Question: I want to pull data from multiple Google Analytics sessions tables using _TABLE_SUFFIX, but I want to set the suffix parameters to between \"seven

Answer 1

Elliott's answer is correct, but if you want to get the most performance out of BigQuery for such kind of query, instead of converting _TABLESUFFIX to DATE, you should convert CURRENT_DATE expressions to strings:

WHERE
  _TABLE_SUFFIX BETWEEN 
  FORMAT_DATE("%Y%m%d", DATE_SUB(CURRENT_DATE(), INTERVAL 7 DAY)) AND
  FORMAT_DATE("%Y%m%d", DATE_SUB(CURRENT_DATE(), INTERVAL 1 DAY))

Answer 2

This works for anyone just looking to segment out the last week of data in big query. Works for any data set as long as you have a timestamp!

where TIMESTAMPFIELD >= TIMESTAMP_SUB(CURRENT_TIMESTAMP(), INTERVAL 7 DAY)

Answer 3

You were almost there with your last attempt. You need to convert your string to a date in order to use it in the comparison:

WHERE
  PARSE_DATE('%Y%m%d', _TABLE_SUFFIX) BETWEEN 
  DATE_SUB(CURRENT_DATE(), INTERVAL 7 DAY) AND
  DATE_SUB(CURRENT_DATE(), INTERVAL 1 DAY)