to csv for formats> to csv {flags} 
--separator, -s {string}: a character to separate columns, defaults to ','--noheaders, -n: do not output the columns names as the first row| input | output | 
|---|---|
| record | string | 
| table | string | 
Outputs an CSV string representing the contents of this table
> [[foobar]; [12]] |to csv
foo,bar
1,2
Outputs an CSV string representing the contents of this table
> [[foobar]; [12]] |to csv-s';'
foo;bar
1;2
Outputs an CSV string representing the contents of this record
> {a:1b:2} |to csv
a,b
1,2
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    https://www.nushell.sh/commands/docs/to_csv.html