效果:
SELECT a, WMSYS.WM_CONCAT(b) AS name FROM aa GROUP BY a;
2.mysql多行合并一行
SELECT type, GROUP_CONCAT(name SEPARATOR ',') AS name FROM tt WHERE type=1 GROUP BY type;
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SELECT a, WMSYS.WM_CONCAT(b) AS name FROM aa GROUP BY a;
SELECT type, GROUP_CONCAT(name SEPARATOR ',') AS name FROM tt WHERE type=1 GROUP BY type;