它只发生在一瞬间,有时候却是一生永远的回忆。
It takes but a moment, but the memory of it sometimes lasts forever.
你的查询返回一个布尔值,它只发生在查询失败。
Your query returns a Boolean, which only happens when the query fails.
你需要看任何SQL错误。你的查询返回一个布尔值,它只发生在查询失败。
You need to look at any SQL errors. Your query returns a Boolean, which only happens when the query fails.
For example, the stock market crash of 1929 is repeatedly re-expected even though it only happened once; it's just prominent in our thinking.
929年股市崩盘,就被反复提及,尽管这只发生过一次,但是人们对它影响深刻
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