I am trying to get a substring of a string from Hive. I have a string as this one: 2017-06-05 09:06:32.0 What I want is to get the first two digits from hour, that is, 09. I get the entire hour with this command: SELECT SUBSTR(hora,11) AS subhoras FROM axmugbcn18.bbdd ...
hive> select sign_in_uri.* from sign_in_uri left semi join sign_in on(sign_in_uri.uri = sign_in.uri) limit 10; 使用正则 hive> select regexp_extract(koudaitoken,'\\[.*\\]',0) from sign_in limit 10; #查看函数用法 hive> describe function regexp_extract regexp_extract(str, reg...
Hive的函数分为三类,分别是UDF、UDAF、UDTF,简单区分这三类函数就是 UDF是单行输入,单行输出;UDAF是多行输入,单行输出;UDTF是单行输入,多行或多列输出。 另:所有的hive函数,都可以使用desc function 函数名查看使用方法,若想查看更详细的使用方法,则可以使用desc function extended 函数名 UDF 字符串类 日期类 集合...
trim trunc ucase unbase64 unhex unix_timestamp upper var_pop var_samp variance weekofyear when windowingtablefunction xpath xpath_boolean xpath_double xpath_float xpath_int xpath_long xpath_number xpath_short xpath_string year | ~ Time taken: 0.048 seconds, Fetched: 216 row(s) hive (default...
#格式: SUBSTRING(s, start, length) SELECT SUBSTRING('拼接函数串123456789',6); # 123456789 SELECT SUBSTRING('拼接函数串123456789',-6); # 456789,倒数。 SELECT SUBSTRING('拼接函数串123456789',6,3); # 123 #格式:SUBSTRING_INDEX(str, delimiter, number) #str: 待截取的字符串,STRING类型 #delimit...