检查字符串中的引号，即数字后跟逗号

Question

我正在创建以字符串作为输入示例的 plsql 函数 ('1234,4565,1212,7658') is right ('1234, 4565,1212,7658') is not right as return ('12345, 4565,121552,7658') 不超过4个字符

我想确保使用函数的用户只输入 2 个引号 只有 4 个字符作为数字并用逗号分隔 如果违反上述任何一项，我如何引发异常。

我尝试过REGEXP_LIKE(Column ,'^['][0-9]{d},[']$') 但它不起作用

我尝试过REGEXP_LIKE(Column ,'^['][0-9]{d},[']$') 但它不起作用

REGEXP_LIKE(Column ,'^['][0-9]{d},[']$') 但它不起作用

预期：

('1234, 4565,1212,7658')

没有预料到

('1234, 
4565,1212,7658')

('123456, 
45654,1212,7658')

Answer 1

你可以试试这个

WITH tab AS(
  SELECT '''1234,4565,1212,7658''' AS str FROM dual UNION ALL
  SELECT '''1234,4565,4565,1212,7658''' AS str FROM dual UNION ALL
  SELECT '''1234m,4565,1212,7658' AS str FROM dual UNION ALL
  SELECT '''1234,45655,1212,7658' AS str FROM dual UNION ALL
  SELECT '''1234,456,1212,7658''' AS str FROM dual UNION ALL
  SELECT '''1234,4565,1212'',7658''' AS str FROM dual       
)
SELECT * FROM tab t
WHERE REGEXP_LIKE(t.str ,'^['']([[:digit:]]{4},)+([[:digit:]]{4})['']$')

结果：

str
------
'1234,4565,1212,7658'
'1234,4565,4565,1212,7658'