SQLITE3-使用左聯接更新查詢

Question

在Android中，是否可以通過左聯接執行更新查詢？

示例： UPDATE fldMaster LEFT JOIN fieldsectionmap ON master_fldId = fieldsec_fieldid SET sortOrder = sortOrder - 1 WHERE fieldsec_secid = 100207 AND sortOrder BETWEEN 39 AND 59

Answer 1

您可以將查詢重寫為以下形式：

UPDATE fldMaster SET sortOrder = sortOrder - 1 WHERE id IN 
(SELECT f.id FROM fldMaster f JOIN fieldsectionmap fsm ON ...)