minus的用法？Intersect是交集，minus是差集，intersection是兩個(gè)結(jié)果集中的元素，例如，select uid from tb1 Intersect select uid fr

minus的用法？

Intersect是交集，minus是差集，intersection是兩個(gè)結(jié)果集中的元素，例如，select uid from tb1 Intersect select uid from TB2，那么如果tb1和TB2中都有相同的uid，就會(huì)找到差集：select uid from tb1minus select uid from TB2 exists in tb1，but no uid in tb1TB2毛利按營(yíng)業(yè)收入減去銷(xiāo)售成本計(jì)算。因?yàn)榻?jīng)常項(xiàng)目赤字等于儲(chǔ)蓄減去投資，所以從這些方面尋找原因是合乎邏輯的。三。一個(gè)指南可能是支付的凈現(xiàn)值，將公共服務(wù)的凈成本降到最低。根據(jù)彭博社調(diào)查經(jīng)濟(jì)學(xué)家的預(yù)測(cè)，該指數(shù)將達(dá)到負(fù)6。在這里，三減二等于一。