来自accepted answer at Merge, update, and pull Git branches without using checkouts，
如果分支B导致非快进合并，则不能先将分支B合并到分支A中而不先检出A.这是因为需要一份工作副本来解决任何潜在的冲突。
我是否正确推断并说你也不能UPDATE companies
SET companies.ic_dph =
(SELECT financna_sprava.ic_dph
FROM financna_sprava
WHERE companies.nazov = financna_sprava.nazov),
companies.mesto =
(SELECT financna_sprava.mesto
FROM financna_sprava
WHERE companies.nazov = financna_sprava.nazov),
companies.ulica_cislo =
(SELECT financna_sprava.ulica_cislo
FROM financna_sprava
WHERE companies.nazov = financna_sprava.nazov),
companies.psc=
(SELECT financna_sprava.psc
FROM financna_sprava
WHERE companies.nazov = financna_sprava.nazov)
到未检出的目的地？