Is it not possible to do queries like(), ilike() on LowCardinality(String) fields? #1301
Description
Question
I see a check added to code in MaskOperations.cpp like this:
if (!(extractMaskNumeric<inverted, UInt8>(mask, column, null_value, null_bytemap, nulls, mask_info)
|| extractMaskNumeric<inverted, UInt16>(mask, column, null_value, null_bytemap, nulls, mask_info)
|| extractMaskNumeric<inverted, UInt32>(mask, column, null_value, null_bytemap, nulls, mask_info)
|| extractMaskNumeric<inverted, UInt64>(mask, column, null_value, null_bytemap, nulls, mask_info)
|| extractMaskNumeric<inverted, Int8>(mask, column, null_value, null_bytemap, nulls, mask_info)
|| extractMaskNumeric<inverted, Int16>(mask, column, null_value, null_bytemap, nulls, mask_info)
|| extractMaskNumeric<inverted, Int32>(mask, column, null_value, null_bytemap, nulls, mask_info)
|| extractMaskNumeric<inverted, Int64>(mask, column, null_value, null_bytemap, nulls, mask_info)
|| extractMaskNumeric<inverted, Float32>(mask, column, null_value, null_bytemap, nulls, mask_info)
|| extractMaskNumeric<inverted, Float64>(mask, column, null_value, null_bytemap, nulls, mask_info)))
throw Exception(ErrorCodes::ILLEGAL_COLUMN, "Cannot convert column {} to mask.", column->getName());
After this we are no longer able to run prefix search on our LowCardinality columns. Is this intentional?