如何在配置单元中使用正则表达式排除字符串中的特殊字符
How to exclude special characters in a string using regular expressions in hive
我想排除句点 (.) 和大括号 ((,))。
但是，十进制数字应该保持原样
所以基本上如果输入是
Hive supports subqueries only in the FROM clause (through Hive 0.12).
The subquery has to be given a name because every table in a FROM
clause must have a name. Columns in the subquery select list must have
unique names.
输出应该是
Hive supports subqueries only in the FROM clause through Hive 0.12 The
subquery has to be given a name because every table in a FROM clause
must have a name Columns in the subquery select list must have unique
names
with t as (select 'Hive supports subqueries only in the FROM clause (through Hive 0.12). The subquery has to be given a name because every table in a FROM clause must have a name. Columns in the subquery select list must have unique names.' as mycol)
select regexp_replace(mycol,'(\d+\.\d+)|[.()]',''),'\((.*?)\)'
from t
Hive supports subqueries only in the FROM clause through Hive 0.12 The
subquery has to be given a name because every table in a FROM clause
must have a name Columns in the subquery select list must have unique
names
我想排除句点 (.) 和大括号 ((,))。
但是，十进制数字应该保持原样
所以基本上如果输入是
Hive supports subqueries only in the FROM clause (through Hive 0.12). The subquery has to be given a name because every table in a FROM clause must have a name. Columns in the subquery select list must have unique names.
输出应该是
Hive supports subqueries only in the FROM clause through Hive 0.12 The subquery has to be given a name because every table in a FROM clause must have a name Columns in the subquery select list must have unique names
with t as (select 'Hive supports subqueries only in the FROM clause (through Hive 0.12). The subquery has to be given a name because every table in a FROM clause must have a name. Columns in the subquery select list must have unique names.' as mycol)
select regexp_replace(mycol,'(\d+\.\d+)|[.()]',''),'\((.*?)\)'
from t
Hive supports subqueries only in the FROM clause through Hive 0.12 The subquery has to be given a name because every table in a FROM clause must have a name Columns in the subquery select list must have unique names