SQL Server - How to get corrupted rows id
There is probably a better way, because the following is time consuming, but I know it will work:  First, backup your corrupted database.  Second, try to bcp out the data.  As it copies the data out, it will display on the screen the number of rows copied.  When it errors, note the number of rows copied.  Those are all the rows prior to hitting the corruption.  Let's say the last entry of number of rows copied prior to hitting the error is 1078466. You narrow down your bcp command by adding -F 1078566 -L 1080466.  This will skip over 100 rows and try to copy out the next 1900 rows.  If it succeeds, then you know that the corruption is somewhere between rows 1078466 and 1078566.  Adjust your -F and -L to narrow down your search.  If it errors, then you know that the corruption is after 1078566.  Adjust your -F and -L to narrow down your search.  Repeat as necessary to locate your corrupted rows.