approx_count()

URL: llms-txt#approx_count()

===== PAGE: https://docs.tigerdata.com/api/_hyperfunctions/count_min_sketch/intro/ =====

Count the number of times a value appears in a column, using the probabilistic [count-min sketch][count-min-sketch] data structure and its associated algorithms. For applications where a small error rate is tolerable, this can result in huge savings in both CPU time and memory, especially for large datasets.

===== PAGE: https://docs.tigerdata.com/api/_hyperfunctions/count_min_sketch/count_min_sketch/ =====