v.19.17New Feature
Add Bitmaptransform Function
Add bitmapTransform function. It transforms an array of values in a bitmap to another array of values, the result is a new bitmap #7598 (Zhichang Yu)Why it matters
ThebitmapTransform function addresses the need to efficiently map or convert values stored in bitmaps to different values, enabling more flexible bitmap manipulations and analyses in ClickHouse.How to use it
Use thebitmapTransform function by passing the original bitmap and a transformation expression or mapping that defines how the array of values should be converted to a new array. The function returns a new bitmap reflecting the transformed values.