To allow quick insertion of data into a database it would be great if I could
export a sheet/selected table to SQL. The SQL for creating the table could be
optional.

Example:
Tablename | columnheader1 | columnheader2
-----------------------------------------
row1      | row1field1    | row1field2
row2      | row2field1    | row2field2

Should export a .sql-file with the following text content:
INSERT INTO 'Tablename' SET columnheader1 = 'row1field1', columnheader2 =
'row1field2';
INSERT INTO 'Tablename' SET columnheader1 = 'row2field1', columnheader2 =
'row2field2';