expressionlist | A comma-delimited list of values. |
Return: | HASH returns a single value. |
The HASH function returns a 32-bit hash value derived from all the values in the expressionlist. Trailing spaces are trimmed from string (or UNICODE) fields before the value is calculated (casting to DATA prevents this).
Example:
personRecord := RECORD
STRING UID;
STRING first_name;
STRING last_name;
STRING address;
STRING city;
STRING state;
STRING zip;
STRING SSN
END;
person := DATASET([{'923','James','Jones','123 Elm Street','Hollywood','FL','33022','000-423-6567'},
{'924','Sally','Jones','22 Main Street','Tampa','FL','33604','000-123-4567'},
{'925','Jose','Gomez','111 Biscaya Lane','Miami','FL','33101','000-123-3383'},
{'926','Adam','Wesson','77 Sunset Blvd','Boston','MA','02108','000-123-4464'},
{'927','Evelyn','Murray','740 SW 10th Street','Boston ','MA','02116','000-123-5556'},
{'928','Joe','Yung','7511 Simson Avenue','Chicago','IL','60131','000-123-7890'}], personRecord);
OUTPUT(Person,{SSN,HASH(SSN)});
//output SSN and its hash value
See Also: DISTRIBUTE, HASH32, HASH64, HASHCRC, HASHMD5