- カテゴリ:
数値関数 (指数とルート)
SQRT¶
負以外の数値式の平方根を返します。
構文¶
SQRT(expr)
Returns¶
If the input expression is of type DECFLOAT, the returned type is DECFLOAT. Otherwise, the returned type is FLOAT.
例¶
SELECT x, sqrt(x) FROM tab;
--------+-------------+
x | sqrt(x) |
--------+-------------+
0 | 0 |
2 | 1.414213562 |
10 | 3.16227766 |
[NULL] | [NULL] |
--------+-------------+