TRUNCATE(X,D)  x代表数字   D代表的需要保留的小数位数

SELECT truncate(1314.1314, 3); # 1314.131
SELECT truncate(1314.1314, 1); # 1314.1
SELECT truncate(1314.1314, 0); # 1314
SELECT truncate(1314.1314, -1); # 1310
SELECT truncate(1314.1314, -3); # 1000
SELECT truncate(-1314.1314, -1); # -1310
SELECT truncate(-1314.1314, -3); # -1000
SELECT truncate(1314.1314*100, -3); # 131000
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原文链接:https://blog.csdn.net/csdn_0_001/article/details/79480699

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