我尝试对SQLite数据库的搜索(选择)功能进行编码。当下,我从TextCtrl(这里简化为简短示例)获取了一个关键字,然后尝试在SQLite数据库的每一列中进行搜索。
keyword = "Product_1"
更好的是,如果我还可以选择多个关键字(列表):
keywords = ["Product_1", "Category_2"]
如何搜索所有列?
c.execute('SELECT * FROM Test WHERE AnyColumns=?', (keyword,))
稍后我需要总结两列。当时我是这样的:
c.execute("SELECT SUM(overall_cost) FROM vm WHERE id=5")
result = cur.fetchone()[0]
c.execute("SELECT SUM(overall_price) FROM vm WHERE id=5")
result2 = cur.fetchone()[0]
是否可以一步一步完成?像SUM(overall_cost) and SUM(overall_price)
一样?
我需要将这两个值分开。不能合计为一个值!
答案 0 :(得分:2)
可能
"SELECT SUM(overall_cost) as overall_cost,SUM(overall_price) as overall_price FROM vm WHERE id=5"