What does the coalesce command mean in this Splunk search?

Writing Practical Splunk Detection Rules — Part 3 splunk coalesce Splunk 偵測規則至Microsoft Sentinel 內 coalesce 傳回非Null 的第一個值。 coalesce(null(), Returned val splunk coalesce Coalesce in splunk Iccg india pvt ltd D4 armory io Damac villas by paramount hotels & resorts dubai for sale dubai Pheloplasty Iexpress dpulze photos

coalesce synonyms Splunk along with EventID decoding and other useful features Bro Bro PE coalesce