regexp_split_to_table 和 regexp_split_to_array 都是字符串分隔函数,可通过指定的表达式进行分隔。区别是 regexp_split_to_table 将分割出的数据转成行,regexp_split_to_array 是将分隔的数据转成数组。 https://zhangzw.com/posts/20200601.html...
In Postgresql, the regexp_split_to_array() function is used to split the specified string into an array using the specified POSIX regular expressions. The strings as well as the POSIX regular expression are provided to the function as an argument. This expression will act as a separator for ...
regexp_split_to_table ( string, pattern [, flags text ] ) string : 待分割的字符串 pattern:正则表达式或指定分割字符串 Tips:查询具体排序的第几个的用regexp_split_to_array函数,查询是否包含的条件,则使用ARRAY_AGG与 regexp_split_to_table两个函数 4.regexp_split_to_array 和上面一样,只是返回数...
1. STRING_TO_ARRAY STRING_TO_ARRAY函数将字符串分割为数组元素,并允许指定空字符串的替换值。 SELECTstring_to_array('xx~^~yy~^~zz','~^~');-- 返回 {xx,yy,zz}SELECTstring_to_array('xx~^~yy~^~zz','~^~','yy');-- 返回 {xx,NULL,zz} 1. 2. REGEXP_SPLIT_TO_ARRAY REGEXP_SPLIT_...
3.regexp_split_to_array a.语法介绍 regexp_split_to_array(string text, pattern text [, flags text ]) Split string using a POSIX regular expression as the delimiter. b.实际例子 postgres=# SELECT regexp_split_to_array('kenyon,love,,china,!',','); regexp_split_to_array --- {kenyon,...
✅ 最佳回答: 您可以将其拆分为一个数组,然后访问每个数组元素: select col1, elements[1] as col2, elements[2] as col3 from ( select col1, regexp_split_to_array(col1, '\s*;\s*') as elements from the_table ) t 本站已为你智能检索到如下内容,以供参考: 🐻 相关问答 5 个 1、...
In this post, I am providing a solution to split a string by using a different type of delimiters in PostgreSQL. Splitting a string is a very common requirement for all PostgreSQL Database Developers. I used regexp_split_to_array to split the string and store the result into a string ar...
[1] 取数组的第二个元素select regexp_split_to_table('F:\QH本部文件\一套表部署相关\test.sh','\\') 正则匹配array_agg(expression) 把表达式变成一个数组 一般配合 array_to_string() 函数使用select nameid, array_agg(traffic ) from dbscheme.test0001 group by nameid order by nameid ; 变为...
regexp_split_to_array函数的行为和regexp_split_to_table相同,不过regexp_split_to_array会把它的结果以一个text数组的形式返回。它的语法是regexp_split_to_array(string, pattern [, flags ])。这些参数和regexp_split_to_table的相同。 一些例子: ...
说明：Number of bits in string 计算字符串的位数 例⼦：bit_length('jose') = 32 函数：char_length(string) or character_length(string)说明：Number of characters in string 计算字符串中字符个数 例⼦：char_length('jose') = 4 函数：lower(string)说明：Convert string to lower case 转换字符串...