I would like to combine several tables from one excel spreadsheet into one with the table header as a field, based on common fields. In the example below I have included 2 tables but the Product 2 table repeats 6 times with an inconsistent number of null columns between tables. Thanks in advance!
Table 1: Starting format of the excel sheet
| Product 1 | | | | | | | | Product 2 | | |
| | | | | | Product 1b | | | | | |
| Year | A | B | C | D | C | D | | Year | C | D |
| 2010 | 1 | 7 | 13 | 19 | 25 | 31 | | 2010 | 37 | 43 |
| 2011 | 2 | 8 | 14 | 20 | 26 | 32 | | 2011 | 38 | 44 |
| 2012 | 3 | 9 | 15 | 21 | 27 | 33 | | 2012 | 39 | 45 |
| 2013 | 4 | 10 | 16 | 22 | 28 | 34 | | 2013 | 40 | 46 |
| 2014 | 5 | 11 | 17 | 23 | 29 | 35 | | 2014 | 41 | 47 |
| 2015 | 6 | 12 | 18 | 24 | 30 | 36 | | 2015 | 42 | 48 |
Table 2: The format I would like the result to take
| Year | Product | A | B | C | D |
| 2010 | Product 1 | 1 | 7 | 13 | 19 |
| 2011 | Product 1 | 2 | 8 | 14 | 20 |
| 2012 | Product 1 | 3 | 9 | 15 | 21 |
| 2013 | Product 1 | 4 | 10 | 16 | 22 |
| 2014 | Product 1 | 5 | 11 | 17 | 23 |
| 2015 | Product 1 | 6 | 12 | 18 | 24 |
| 2010 | Product 1b | 1 | 7 | 25 | 31 |
| 2011 | Product 1b | 2 | 8 | 26 | 32 |
| 2012 | Product 1b | 3 | 9 | 27 | 33 |
| 2013 | Product 1b | 4 | 10 | 28 | 34 |
| 2014 | Product 1b | 5 | 11 | 29 | 35 |
| 2015 | Product 1b | 6 | 12 | 30 | 36 |
| 2010 | Product 2 | 1 | 7 | 37 | 43 |
| 2011 | Product 2 | 2 | 8 | 38 | 44 |
| 2012 | Product 2 | 3 | 9 | 39 | 45 |
| 2013 | Product 2 | 4 | 10 | 40 | 46 |
| 2014 | Product 2 | 5 | 11 | 41 | 47 |
| 2015 | Product 2 | 6 | 12 | 42 | 48 |