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我想從數據庫表中檢索BLOB數據顯示名爲P4_COMPANY_LOGO如何檢索BLOB數據在Oracle APEX
圖像商品我已經選擇了顯示圖像的項目源爲SQL查詢(返回單個值):
select company_logo from companies where company_id=10;
但是當我運行的頁面就立即返回該錯誤:
P4_COMPANY_LOGO has to have a valid BLOB column as source.
Help Please ..