Oracle:SQL查询返回仅包含数值的行 [英] Oracle: SQL query that returns rows with only numeric values

问题描述

我有一个名为X的字段(在Oracle中为列)，其值类似于"a1b2c3"，"abc"，"1ab"，"123"，"156"

I have a field (column in Oracle) called X that has values like "a1b2c3", "abc", "1ab", "123", "156"

如何编写一个SQL查询，该查询仅向我返回包含纯数值=不包含字母的X?上例中的是"123"和"156"

how do I write an sql query that returns me only the X that hold pure numerical values = no letters? from the example above would be „123" and „156"

选择X 从myTable 哪里... ??

select X from myTable where ...??

推荐答案

您可以将REGEXP_LIKE函数用作:

SELECT X 
FROM myTable 
WHERE REGEXP_LIKE(X, '^[[:digit:]]+$');

样品运行:

SQL> SELECT X FROM SO;

X
--------------------
12c
123
abc
a12

SQL> SELECT X  FROM SO WHERE REGEXP_LIKE(X, '^[[:digit:]]+$');

X
--------------------
123

SQL> 

这篇关于Oracle:SQL查询返回仅包含数值的行的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！