Oracle query on String

Question

I want to perform my query on a string in this format, xxxx/xxxx

where x is a number. when I perform it using the Oracle interface or my C# application I get this error:

ORA-00904: "xxxx/xxxx": invalid identifier

I performed this query:

SELECT * FROM "My Table" WHERE Field="xxxx/xxxx"

Answer 1

您应该在SQL字符文字（如xxxx / xxxx）周围使用单引号：

SELECT * FROM "My Table" WHERE Field='xxxx/xxxx'