[英]SQL Query to select from a table using a WHERE clause on another table
[英]SELECT * FROM WHERE (using column from another table)
我在 MySQL 有兩張桌子,第一張桌子叫做“收據”,第二張桌子是“記分牌”
收據表:
這是記分牌表>>
我需要來自 COL 7 的 SQL 到 select 其中 [COL3] = [scorekey] AND [COL 5] = [Selection]
並回顯到 div echo "<div>". $scr["COL 7"]."</div>"
echo "<div>". $scr["COL 7"]."</div>"
我嘗試加入這兩個表,但我的代碼不起作用:
$score = "SELECT COL7
FROM scoreboard
LEFT JOIN scorekey ON receipts
WHERE scoreboard = scorekey";
$scr = $connection->query($score);
SELECT s.COL7
FROM scoreboard s
INNER JOIN receipts r ON s.COL3 = r.scorekey
AND s.[COL 5] = r.Selection
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