THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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Return Type | Name(Signature) | Description | |||||||
|---|---|---|---|---|---|---|---|---|---|
varies | java_method(class, method[, arg1[, arg2..]]) | Synonym for | |||||||
varies | reflect(class, method[, arg1[, arg2..]]) | Calls a Java method by matching the argument signature, using reflection. See Reflect (Generic) UDF for examples. | |||||||
int | hash(a1[, a2...]) | Returns a hash value of the arguments. | |||||||
| string | current_user() | Returns current user name from the configured authenticator manager. Could be the same as the user provided when connecting, but with some authentication managers (for example HadoopDefaultAuthenticator) it could be different. | GenericUDFCurrentUser | ||||||
| string | logged_in_user() | Returns the current user name from the session state. This is the username provided when connecting to Hive. | GenericUDFLoggedInUser | ||||||
| string | current_database() | Returns current database name. | GenericUDFCurrentDatabase | ||||||
| string | md5(string/binary) | Calculates an MD5 128-bit checksum for the string or binary. The value is returned as a string of 32 hex digits, or NULL if the argument was NULL. Example: md5('ABC') = '902fbdd2b1df0c4f70b4a5d23525e932'. | UDFMd5 | ||||||
| string | sha1(string/binary) sha(string/binary) | Calculates the SHA-1 digest for string or binary and returns the value as a hex string. Example: sha1('ABC') = '3c01bdbb26f358bab27f267924aa2c9a03fcfdb8'. | UDFSha1 | ||||||
| bigint | crc32(string/binary) | Computes a cyclic redundancy check value for string or binary argument and returns bigint value. Example: crc32('ABC') = 2743272264. | UDFCrc32 | ||||||
| string | sha2(string/binary,int) | Calculates the SHA-2 family of hash functions (SHA-224, SHA-256, SHA-384, and SHA-512). The first argument is the string or binary to be hashed. The second argument indicates the desired bit length of the result, which must have a value of 224, 256, 384, 512, or 0 (which is equivalent to 256). SHA-224 is supported starting from Java 8. If either argument is NULL or the hash length is not one of the permitted values, the return value is NULL. Example: sha2('ABC', 256) = 'b5d4045c3f466fa91fe2cc6abe79232a1a57cdf104f7a26e716e0a1e2789df78'. | GenericUDFSha2 | ||||||
| binary | aes_encrypt(inputstring/binary, keystring/binary) | Encrypt input using AES. Key lengths of 128, 192 or 256 bits can be used. 192 and 256 bits keys can be used if Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files are installed. If either argument is NULL or the key length is not one of the permitted values, the return value is NULL. Example: base64(aes_encrypt('ABC', '1234567890123456')) = 'y6Ss+zCYObpCbgfWfyNWTw=='. | GenericUDFAesEncrypt | ||||||
| binary | aes_decrypt(input binary, keystring/binary) | Decrypt input using AES. Key lengths of 128, 192 or 256 bits can be used. 192 and 256 bits keys can be used if Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files are installed. If either argument is NULL or the key length is not one of the permitted values, the return value is NULL. Example: aes_decrypt(unbase64('y6Ss+zCYObpCbgfWfyNWTw=='), '1234567890123456') = 'ABC'. | GenericUDFAesDecrypt | ||||||
| string | version() | Returns the Hive version. The string contains 2 fields, the first being a build number and the second being a build hash. Example: "select version();" might return "2.1.0.2.5.0.0-1245 r027527b9c5ce1a3d7d0b6d2e6de2378fb0c39232". Actual results will depend on your build. | UDFVersion | ||||||
| bigint | surrogate_key([write_id_bits, task_id_bits]) | Automatically generate numerical Ids for rows as you enter data into a table. Can only be used as the default value for acid or insert-only tables. | GenericUDFSurrogateKey | ||||||
| string | typeof(x) | | GenericUDFTypeOf |
Geospatial
Hive provides adding ESRI-based standard geospatial data directly into hive tables. These UDFs are autogenerated by Hive. Status colour Green title NEW
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