如何从Azure数据湖分析文件中的dat文件中获取列数

Question

I have different Dat and CSV files. it's containing more than 255 columns and delimiter as '|' and tab. How to fetch the column count. Anyone please share sample U-Sql code

Answer 1

I know this was down voted, so I hope it is still OK to supply an answer (although I'm not including a code sample).

Extract just the first row in your file (using FETCH 1 ROWS) into a single column rowset. You should then be able to use String.Split to get a column count.