REGEXP_REPLACE( 'TechOnTheNet' ,'a|e|i|o|u' ,'Z' ,1 ,1 ,'i' ,'(\1) \2-\3' ) AS First_Occurrence FROM emp ; 输出 输入表达式含有7个参数,但MT仅支持REGEXP_REPLACE含有2至6个参数,因此会记录错误“Too many arguments for REGEXP_REPLACE functio
其中replace_string,position,occurtence,match_parameter参数都是可选的。 9.2 REGEXP_SUBSTR REGEXP_SUBSTR(source_string, pattern[,position [, occurrence[, match_parameter]]])函数(10g新函数) 描述:返回匹配模式的子字符串。相当于增强的substr函数。Source_string指定源字符表达式;pattern指定规则表达式;position...
REPLACEreturnscharwith every occurrence ofsearch_stringreplaced withreplacement_string. Ifreplacement_stringis omitted or null, then all occurrences ofsearch_stringare removed. Ifsearch_stringis null, thencharis returned. Bothsearch_stringandreplacement_string, as well aschar, can be any of the datatyp...
SELECT'My first name is (x), my last name is (y), and I am from (z).'ASORIGINAL_STRING,REPLACE(REPLACE(REPLACE('My first name is (x), my last name is (y), and I am from (z).','(x)','John'),'(y)','Smith'),'(z)','England')ASREPLACE_STRINGFROMdual; sql Result: ...
occurrence:是要搜索的匹配项 replacestr:是替换模式的字符串 match_option:提供了更改默认匹配的选项。它可以包含以下一个或多个值: “c”:使用区分大小写的匹配(默认值) “i”:使用不区分大小写的匹配 “n”:允许匹配任何字符的运算符 “m”:将源字符串作为多行处理 ...
regexp_replace_string => DBMS_REDACT.RE_REDACT_EMAIL_NAME, regexp_position => DBMS_REDACT.RE_BEGINNING, regexp_occurrence => DBMS_REDACT.RE_FIRST); END; / 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 加密前: 1234556778@ ...
A modifier can appear in a format model more than once. In such a case, each subsequent occurrence toggles the effects of the modifier. Its effects are enabled for the portion of the model following its first occurrence, and then disabled for the portion following its second, and then reena...
(String, pattern, position, occurrence, modifier)string:需要进行正则处理的字符串pattern:进行匹配的正则表达式position:起始位置,从字符串的第几个字符开始正则表达式匹配(默认为1) 注意:字符串最初的位置是1而不是0occurrence:获取第几个分割出来的组(分割后最初的字符串会按分割的顺序排列成组)modifier:模式('...
For configuration directives that just take a single value, you can use them multiple time in the configuration file but only the last occurrence found in the file will be used. For configuration directives that allow a list of value, you can use it multiple time, the values will be ...
In Oracle 9i, Oracle introduced the UNDO tablespace concept, which replaces the rollback segment. To prevent the "snapshot too old" error in Oracle 9i, it is recommended that you: Create an UNDO tablespace with an appropriate amount of free space. ...