谁能帮我理解这个查询?mktpgmvhclxref.mktpgmvhclxrefId.mktgPgm
大部分是部分。一般是这样,table_name.columnName
但这里的格式似乎不同
SELECT mktpgmvhclxref.mktpgmvhclxrefid.mktgpgm,
mktpgm.mktgpgm,
mktpgmvhclxref.cmpgn,
campaign.cmpgndescription,
mktpgmvhclxref.mktpgmvhclxrefid.vhcl,
vhclhierarchy.modname,
mktpgmvhclxref.mktpgmvhclxrefid.modyr,
mktpgmvhclxref.userinsrt,
mktpgmvhclxref.rowinsrt
FROM mktpgmvhclxref mktpgmvhclxref,
mktpgm mktpgm,
vhclhierarchy vhclHierarchy,
campaign campaign
WHERE mktpgmvhclxref.mktpgmvhclxrefid.mktgpgm = mktpgm.idmktgpgm
AND mktpgmvhclxref.cmpgn = campaign.campaignid
AND mktpgmvhclxref.mktpgmvhclxrefid.vhcl = vhclhierarchy.vhcl