SQL SQRT(X)函數

SQRT(X)

此函數返回X的非負平方根,考慮以下示例:

SQL>SELECT SQRT(49);
+---------------------------------------------------------+
| SQRT(49) |
+---------------------------------------------------------+
| 7 |
+---------------------------------------------------------+
1 row in set (0.00 sec)

0 條評論,你可以發表評論,我們會進行改進
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