Validating CSV file with regular expressions / Проверка CSV файла регулярным выражением

The CSV file does not contain double quote.
14 commas (field delimiter) are expected in each row.
A row delimiter is CRLF (\r\n).

Searching for a row with 15 commas in Notepad++ :
^([^,\r]*,){15}
[^,\r]* matches any char except comma and CR

Regular expressions for CSV files

SQL Server Import had troubles to import csv file, when some fields contained CRLF(\r\n).
Row delimiter needs to be changed.
Notepad++ was used.

It matches 15 columns (14 comma delimiters). CRLF is end of line. Some text columns contain CRLF(\r\n).
((?:(?:"(?:(?:""|[^"])+)"|(?:[^,]*)),){14}.*?)\r\n
to add a pipe as row delimiter replace with \1|\r\n

it matches $$ delimiter 7 fields (6 delimiters) and end of line \r MAKE sure . dot matches end of LINE!
(?:.*?\$\$){6}.*?\r
((?:.*?\$\$){13}.*?)\r\n   to add a pipe as row delimiter replace with \1|\r\n 

to search for $$ with grep (Linux or Cygwin), use single quotes and escape last dollar
grep -e '$\$' filename.csv