maxDiscrete

TDigestArrayUDAF TDigestMLLibVecUDAF TDigestMLVecUDAF TDigestUDAF

maxDiscreteV

TDigestArrayUDAF TDigestMLLibVecUDAF TDigestMLVecUDAF TDigestMultiUDAF TDigestUDAF

merge

TDigestMultiUDAF TDigestUDAF