Plsql 如何通过某个取整因子进行取整？_Plsql_Oracle11g

Plsql 如何通过某个取整因子进行取整？

plsql oracle11g

Plsql 如何通过某个取整因子进行取整？,plsql,oracle11g,Plsql,Oracle11g,我的取整系数是0.8 如何在Oracle存储过程计算中实现这一点？从您给出的最少示例来看，您希望使用调整后的值ceil（）： If x = 1.71 Then output = 1 If x = 1.82 Then output = 2 在CTE中使用一些示例值进行演示： ceil(x - 0.8) 从您给出的最少示例中，您希望使用调整后的值ceil（）： If x = 1.71 Then output = 1 If x = 1.82 Then output = 2 在CTE中使用一些示例

我的取整系数是

0.8

如何在Oracle存储过程计算中实现这一点？

从您给出的最少示例来看，您希望使用调整后的值

ceil（）

：

If x = 1.71 Then output = 1
If x = 1.82 Then output = 2

在CTE中使用一些示例值进行演示：

ceil(x - 0.8)

从您给出的最少示例中，您希望使用调整后的值

ceil（）

：

If x = 1.71 Then output = 1
If x = 1.82 Then output = 2

在CTE中使用一些示例值进行演示：

ceil(x - 0.8)

使用

四舍五入

和

.5

的偏移量。因此，对于

0.8

的系数，然后

0.5=0.8-0.3

从值中四舍五入减去

0.3

：

Oracle 11g R2架构设置：

y := ceil(x - 0.8);

CREATE TABLE table_name ( value ) AS
  SELECT +1.71 FROM DUAL UNION ALL
  SELECT +1.80 FROM DUAL UNION ALL
  SELECT +1.81 FROM DUAL UNION ALL
  SELECT -1.19 FROM DUAL UNION ALL
  SELECT -1.20 FROM DUAL;

SELECT value,
       ROUND( value - 0.3 ) AS rounded_value
FROM   table_name

| VALUE | ROUNDED_VALUE |
|-------|---------------|
|  1.71 |             1 |
|   1.8 |             2 |
|  1.81 |             2 |
| -1.19 |            -1 |
|  -1.2 |            -2 |

SELECT value,
       ROUND( value - 0.3 ) AS rounded_value,
       CEIL( value - 0.8 ) AS ceiling_value,
       FLOOR( value + 0.2 ) AS floored_value
FROM   table_name

查询1：

y := ceil(x - 0.8);

CREATE TABLE table_name ( value ) AS
  SELECT +1.71 FROM DUAL UNION ALL
  SELECT +1.80 FROM DUAL UNION ALL
  SELECT +1.81 FROM DUAL UNION ALL
  SELECT -1.19 FROM DUAL UNION ALL
  SELECT -1.20 FROM DUAL;

SELECT value,
       ROUND( value - 0.3 ) AS rounded_value
FROM   table_name

| VALUE | ROUNDED_VALUE |
|-------|---------------|
|  1.71 |             1 |
|   1.8 |             2 |
|  1.81 |             2 |
| -1.19 |            -1 |
|  -1.2 |            -2 |

SELECT value,
       ROUND( value - 0.3 ) AS rounded_value,
       CEIL( value - 0.8 ) AS ceiling_value,
       FLOOR( value + 0.2 ) AS floored_value
FROM   table_name

：

y := ceil(x - 0.8);

CREATE TABLE table_name ( value ) AS
  SELECT +1.71 FROM DUAL UNION ALL
  SELECT +1.80 FROM DUAL UNION ALL
  SELECT +1.81 FROM DUAL UNION ALL
  SELECT -1.19 FROM DUAL UNION ALL
  SELECT -1.20 FROM DUAL;

SELECT value,
       ROUND( value - 0.3 ) AS rounded_value
FROM   table_name

| VALUE | ROUNDED_VALUE |
|-------|---------------|
|  1.71 |             1 |
|   1.8 |             2 |
|  1.81 |             2 |
| -1.19 |            -1 |
|  -1.2 |            -2 |

SELECT value,
       ROUND( value - 0.3 ) AS rounded_value,
       CEIL( value - 0.8 ) AS ceiling_value,
       FLOOR( value + 0.2 ) AS floored_value
FROM   table_name

根据您希望如何处理舍入系数边界处的值，有不同的方法使用

ROUND

、

FLOOR

和

CEIL

在边界值处给出不同的结果：

```
舍入（值-0.3）
```
将舍入远离0的边界处的值，因此将向上舍入正值，向下舍入负值
```
CEIL（值-0.8）
```
将向下舍入边界处的值
```
FLOOR（值+0.2）
```
将向上舍入边界处的值

查询2：

y := ceil(x - 0.8);

CREATE TABLE table_name ( value ) AS
  SELECT +1.71 FROM DUAL UNION ALL
  SELECT +1.80 FROM DUAL UNION ALL
  SELECT +1.81 FROM DUAL UNION ALL
  SELECT -1.19 FROM DUAL UNION ALL
  SELECT -1.20 FROM DUAL;

SELECT value,
       ROUND( value - 0.3 ) AS rounded_value
FROM   table_name

| VALUE | ROUNDED_VALUE |
|-------|---------------|
|  1.71 |             1 |
|   1.8 |             2 |
|  1.81 |             2 |
| -1.19 |            -1 |
|  -1.2 |            -2 |

SELECT value,
       ROUND( value - 0.3 ) AS rounded_value,
       CEIL( value - 0.8 ) AS ceiling_value,
       FLOOR( value + 0.2 ) AS floored_value
FROM   table_name

：

y := ceil(x - 0.8);

CREATE TABLE table_name ( value ) AS
  SELECT +1.71 FROM DUAL UNION ALL
  SELECT +1.80 FROM DUAL UNION ALL
  SELECT +1.81 FROM DUAL UNION ALL
  SELECT -1.19 FROM DUAL UNION ALL
  SELECT -1.20 FROM DUAL;

SELECT value,
       ROUND( value - 0.3 ) AS rounded_value
FROM   table_name

| VALUE | ROUNDED_VALUE |
|-------|---------------|
|  1.71 |             1 |
|   1.8 |             2 |
|  1.81 |             2 |
| -1.19 |            -1 |
|  -1.2 |            -2 |

SELECT value,
       ROUND( value - 0.3 ) AS rounded_value,
       CEIL( value - 0.8 ) AS ceiling_value,
       FLOOR( value + 0.2 ) AS floored_value
FROM   table_name

使用

四舍五入

和

.5