Oracleは、http://と、スラッシュ(/)または文字列の末尾のいずれかとの間で、3つから4つのこのサブストリングを検索します。 SELECT REGEXP_SUBSTR('http://www.example.com/products', 'http://([[:alnum:]]+\.?){3,4}/?') "REGEXP_SUBSTR" FROM DUAL; REGEXP_SUBSTR --- http://ww...
SELECT REGEXP_SUBSTR('500 Oracle Parkway, Redwood Shores, CA', ',[^,]+,') "REGEXPR_SUBSTR" FROM DUAL; REGEXPR_SUBSTR --- , Redwood Shores, The following example examines the string, looking forhttp://followed by a substring of one or more alphanumeric characters and optionally, a per...
In this example: '[[:alpha:]]+' is the regular expression pattern that matches any word. 1 instructs the function to start searching for the beginning of the string. 4 specifies the fourth occurrence. See the following page more information on regular expression support on Oracle. To return...
使用regexp_substr函数可以根据正则表达式模式拆分名称字符串。regexp_substr函数是Oracle数据库中的一个函数,用于从字符串中提取满足指定模式的子字符串。 具体使用方法如下:...
Oracle 12c Oracle 18c Syntax REGEXP_REPLACE(original_string,pattern[,position[,occurrence[,match_param[,sub_expression]]]) Parameters original_stringis a string which we want to represent in regular expression pattern. patternis a regular expression pattern. position...
Oracle 12c, Oracle 11g Examples: Oracle REGEXP_SUBSTR function The following example examines the string, looking for the first substring bounded by commas. Oracle Database searches for a comma followed by one or more occurrences of non-comma characters followed by a comma and returns the substri...
subexpr: the ordinal number of the group in the regular expression whose value is to be returned. The value is an integer greater than or equal to 0. An error is returned if the value is less than 0. The default value is 0, which means to return the substring that matches the regular...
I'm not sure that I'd run your MySQL server as it is now in production. cheers Jon Stephens MySQL Documentation Team @ Oracle MySQL Dev Zone MySQL Server Documentation Oracle Subject Views Written By Posted REGEXP_SUBSTR function missing ...
The REGEXP_SUBSTR function can be used in the following versions of Oracle/PLSQL: Oracle 12c, Oracle 11g, Oracle 10g Example - Match on Words Let's start by extracting the first word from a string. For example: SELECT REGEXP_SUBSTR ('TechOnTheNet is a great resource', '(\S*)(\s...
若要在正则表达式中使用特殊字符的文本示例，请在其前面加上两个反斜杠（\）字符。MySQL解析器解释其中...