BigQuery's SQL Toolbox Now Features GAP_FILL Function for Time Series Analysis

Summary

BigQuery's SQL toolbox now includes the GAP_FILL function, designed to address missing data in time series analysis. GAP_FILL allows for seamless data interpolation, filling gaps based on specified criteria. This is particularly useful for datasets with missing data, such as daily sales tracking. Previously, gaps were handled using an array of all date values and a LEFT JOIN. The new function ensures continuous data flow for analyses.