| String =String | Returns if two strings are equal. |  | 
| String ==String | Returns if two strings are equal. The comparison is case insensitive. |  | 
| String LIKEString | Checks if a string matches a pattern. |  | 
| String MATCHString | Checks if a string matches a PCRE regular expression. |  | 
| String BEGINSString | Checks if a string begins with a pattern. |  | 
| String ENDSString | Checks if a string ends with a pattern. |  | 
| String <>String | Returns if two strings are different. |  | 
| String1 <String2 | Returns if String1 is strictly lower than String2. |  | 
| String1 >String2 | Returns if String1 is strictly greater than String2. |  | 
| String1 <=String2 | Returns if String1 is lower or equal than String2. |  | 
| String1 >=String2 | Returns if String1 is greater or equal than String2. |  |