Problems are not stop signs; they are guidelines.
問(wèn)題的出現(xiàn)不是讓你止步，而是給你指路。———— Robert Schuller
今天在做一個(gè)銷售業(yè)績(jī)的排行功能，統(tǒng)計(jì)公司銷售在本月及當(dāng)天的業(yè)績(jī)金額并進(jìn)行排行。 例：數(shù)據(jù)表中有以下幾個(gè)關(guān)鍵字段：用戶名username，金額P，簽單時(shí)間T ….銷售每簽一單就錄入一條記錄。 SQL語(yǔ)句： $today = strtotime(“today”); ? ?//今天零點(diǎn)時(shí)間戳 SELECT *,SUM(P) AS total_P_month,SUM(CASE WHEN T>$today THEN P ELSE 0 END) AS total_P_today FROM table WHERE T&g...