mysql 临时表 两次_重复的临时表MySQL
我想在同一個(gè)查詢中多次引用一個(gè)臨時(shí)表.由于臨時(shí)表的問(wèn)題我不能這樣做:
所以要修復(fù)我正在創(chuàng)建臨時(shí)表的重復(fù)項(xiàng):
CREATE TEMPORARY TABLE IF NOT EXISTS earnings_temp_one AS (SELECT * FROM earnings WHERE earning_account_id = ?);
CREATE TEMPORARY TABLE IF NOT EXISTS earnings_temp_two AS (SELECT * FROM earnings WHERE earning_account_id = ?);
CREATE TEMPORARY TABLE IF NOT EXISTS earnings_temp_three AS (SELECT * FROM earnings WHERE earning_account_id = ?);
但這需要我查詢大量的桌面收益3次,這在某種程度上違背了目的.
有沒有辦法讓我以不同的名稱復(fù)制臨時(shí)表?
然后我就可以在大桌子上運(yùn)行一次查詢.
或者可能有一個(gè)臨時(shí)表問(wèn)題的修復(fù)程序,不需要我創(chuàng)建重復(fù)項(xiàng)?
解決方法:
好的,我解決了它:
CREATE TEMPORARY TABLE IF NOT EXISTS earnings_temp_one AS (SELECT * FROM earnings WHERE earning_account_id = ?);
CREATE TEMPORARY TABLE IF NOT EXISTS earnings_temp_two AS (SELECT * FROM earnings_temp_one);
CREATE TEMPORARY TABLE IF NOT EXISTS earnings_temp_three AS (SELECT * FROM earnings_temp_one);
標(biāo)簽:mysql,mysqli
來(lái)源: https://codeday.me/bug/20190519/1135849.html
總結(jié)
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