SQL查詢複製值 - 初學者

Question

INSERT INTO Odds_display (Team, Odds) 
SELECT DISTINCT Team1, Odds1 
FROM Odds 
WHERE Team1 = 'Team SoloMid' 
AND NOT EXISTS (SELECT Team FROM Odds_display) 

所以，我不知道我是盲人還是愚蠢的......或者兩者兼而有之！一種初學者到SQL，但我在這裏瞄準的是從表中複製2個值並將它們插入到另一個表中，但不要插入任何重複項！

所以表賠率是"original"表，我想複製到Odds_display表，並防止重複！

Answer 1

你需要一個WHERE子句中的子查詢你告訴它哪支球隊不希望創建

INSERT INTO Odds_display (Team, Odds) 
SELECT DISTINCT Team1, Odds1 
FROM Odds 
WHERE Team1 = 'Team SoloMid' 
AND NOT EXISTS (SELECT * FROM Odds_display WHERE Team = 'Team SoloMid') 

Answer 2

嘗試重複改變NOT EXISTS到NOT IN如下

INSERT INTO Odds_display (Team, Odds) 
SELECT DISTINCT Team1, Odds1 
FROM Odds 
WHERE Team1 = 'Team SoloMid' 
AND Team1 NOT IN (SELECT Team FROM Odds_display)