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我有 7 个具有相似列名(例如 jan1)的表,其中存在数值数据值(例如 1 或 0),并且想要总结这些表并在具有相似列名(例如 jan1)的其他表中更新它
从表 WHERE bla = 5 中选择总和(大小)作为整体大小;
SELECT SUM(SIZE) FROM Table WHERE bla = '5'