JSONStringsEachRowWithProgress

説明

JSONEachRow/JSONStringsEachRow とは異なり、ClickHouse は進行状況情報を JSON 値としても出力します。

使用例

{"row":{"num":42,"str":"hello","arr":[0,1]}}
{"row":{"num":43,"str":"hello","arr":[0,1,2]}}
{"row":{"num":44,"str":"hello","arr":[0,1,2,3]}}
{"progress":{"read_rows":"3","read_bytes":"24","written_rows":"0","written_bytes":"0","total_rows_to_read":"3"}}

フォーマット設定