Fix: if column had no type it would use previous column's type
Fix: if column had no type it would use previous column's type

denisov-vlad/redash,rockwotj/redash,EverlyWell/redash,moritz9/redash,rockwotj/redash,alexanderlz/redash,hudl/redash,EverlyWell/redash,alexanderlz/redash,EverlyWell/redash,moritz9/redash,alexanderlz/redash,chriszs/redash,chriszs/redash,crowdworks/redash,EverlyWell/redash,rockwotj/redash,44px/redash,hudl/redash,denisov-vlad/redash,getredash/redash,getredash/redash,crowdworks/redash,getredash/redash,crowdworks/redash,moritz9/redash,crowdworks/redash,denisov-vlad/redash,alexanderlz/redash,getredash/redash,44px/redash,rockwotj/redash,44px/redash,getredash/redash,44px/redash,chriszs/redash,chriszs/redash,hudl/redash,denisov-vlad/redash,denisov-vlad/redash,moritz9/redash,hudl/redash