How to read from array of low cardinality column?

[kant777]

Discussed in #22

^{Originally posted by kant777 January 25, 2022}
How to read from array of low cardinality string column?

Below is the parts of the code I used to Read LowCardinality Column

tagsKey = proto.ColStr{}
tagsKeyLC = proto.ColLowCardinality{
	Index: &tagsKey,
}
tagsKeyArr = proto.ColArr{
	Data: &tagsKeyLC,
}

Result: proto.Results{
	{Name: "tags.key", Data: &tagsKeyArr},
},

I get the following error

panic: decode block: decode block: target: tags.key: decode data: got version 30, expected 1

any example?

[ernado]

I will add more examples on weekend.

Also go1.18 will bring generics that will greatly improve ergonomics of such columns, that's why current implementation is kinda poor.