[v2] Standardize insert_id

[Flamenco]

The docs state this value should be insert_id, but MySql driver returns insertId.

Since this is such a common item to retrieve, I think the drivers should all map to the same field name.

[kylefarris]

I agree, this should definitely be consistent. I'm looking at the code, though, and it would seem that it already should be returning it as insert_id. I'll investigate further.

[kylefarris]

It looks like it's returning both insertId and insert_id which actually makes sense because I'm just merging in the node-querybuilder standardized fields (insert_id, affected_rows, and changed_rows) into the normal MySQL driver's response object.

I think this allows for the best of both worlds--maximum flexibility as well a standard API for all drivers.

Are you not getting the insert_id along with the insertId like I am?

[Flamenco]

I did not see that it returned both, so I will double check. If I can rely on insert_id, affected_rows, and changed_rows to be consistent across DB's then that's GREAT!