使用或在where子句爲零或爲空

我有一個查詢，我想顯示結果如果我的兩個字段是相等的零或空。使用或在where子句爲零或爲空

foreach ($query=$db->query("SELECT *, 
t1.CMD_ID, t1.CMD_CLT_RS, t1.CMD_CLT_ID, 
t2.CLT_ID, t2.CLT_CODE 
FROM sous_commandes 
LEFT OUTER JOIN commandes AS t1 ON (t1.CMD_ID=sous_commandes.SCMD_CMD_ID) 
LEFT OUTER JOIN client AS t2 ON (t2.CLT_ID=t1.CMD_CLT_ID) 
WHERE SCMD_FRN_ID = '$frn_id' AND SCMD_FACT_TOTAL_HT = '0' || IS NULL AND SCMD_FACT_TOTAL_TTC = '0' || IS NULL 
ORDER BY STR_TO_DATE(SCMD_DATE, '%d/%m/%Y') DESC") as $donnees):

我試圖用|| IS NULL，但它不起作用。沒有顯示結果。謝謝。

來源

2014-02-12 user3162341

變化''||爲'或'' – krishna

'||爲[** **有效（HTTPS：/ （AND）（SCMD_FACT_TOTAL_HT ='0'或SCMD_FACT_TOTAL_HT IS NULL）AND（SCMD_FACT_TOTAL_TTC ='0'或SCMD_FACT_TOTAL_TTC IS NULL）在MySQL –

中嘗試「「 –

變化

SCMD_FACT_TOTAL_HT = '0' || IS NULL

到

(SCMD_FACT_TOTAL_HT = '0' OR SCMD_FACT_TOTAL_HT IS NULL)

同爲當然SCMD_FACT_TOTAL_TTC。

編輯

你也可以做

COALESCE(SCMD_TOTAL_HT, '0') = '0'

來源

2014-02-12 13:04:49

foreach ($query=$db->query("SELECT *, 
t1.CMD_ID, t1.CMD_CLT_RS, t1.CMD_CLT_ID, 
t2.CLT_ID, t2.CLT_CODE 
FROM sous_commandes 
LEFT OUTER JOIN commandes AS t1 ON (t1.CMD_ID=sous_commandes.SCMD_CMD_ID) 
LEFT OUTER JOIN client AS t2 ON (t2.CLT_ID=t1.CMD_CLT_ID) 
WHERE SCMD_FRN_ID = '$frn_id' AND SCMD_FACT_TOTAL_HT = '0' || isnull(SCMD_FACT_TOTAL_HT) AND SCMD_FACT_TOTAL_TTC = '0' || isnull(SCMD_FACT_TOTAL_TTC) 
ORDER BY STR_TO_DATE(SCMD_DATE, '%d/%m/%Y') DESC") as $donnees):

來源

2014-02-12 13:05:55

使用或在where子句爲零或爲空

回答

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