Question

what is the use of rows fan and cols fan?
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Answer 1

Answer:

it cools down foods in factory

Explanation:

when food is kept under rose fans it simply cools down the heated foods for packing.

Answer 2

If you mean in JSON it's to create proper data storing tables...

You can make one such using the following code

select var1, key, metadata_by_topic->key

select var1, key, metadata_by_topic->keyfrom

select var1, key, metadata_by_topic->keyfrom (select var1,

select var1, key, metadata_by_topic->keyfrom (select var1, json_object_keys(

select var1, key, metadata_by_topic->keyfrom (select var1, json_object_keys( (select t.metadata_by_topic from user_stats as t where t.var1=us.var1)

select var1, key, metadata_by_topic->keyfrom (select var1, json_object_keys( (select t.metadata_by_topic from user_stats as t where t.var1=us.var1) ) AS KEY,

select var1, key, metadata_by_topic->keyfrom (select var1, json_object_keys( (select t.metadata_by_topic from user_stats as t where t.var1=us.var1) ) AS KEY, us.metadata_by_topic

select var1, key, metadata_by_topic->keyfrom (select var1, json_object_keys( (select t.metadata_by_topic from user_stats as t where t.var1=us.var1) ) AS KEY, us.metadata_by_topic from user_stats us

select var1, key, metadata_by_topic->keyfrom (select var1, json_object_keys( (select t.metadata_by_topic from user_stats as t where t.var1=us.var1) ) AS KEY, us.metadata_by_topic from user_stats us ) x

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