[Fix][Connector-V2][Clickhouse] fix clickhouse source connector read Nullable() type is not null,exam…#5080

Merged

liugddx merged 1 commit intoapache:devfrom gaopeng666:clickhouse-source-nullable

Jul 14, 2023

+8-4

Commits on Jul 13, 2023

fix clickhouse source connector read Nullable() type is not null,example:Nullable(Float64) while value is null the result is 0.0
gaopeng666
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