1,REGEXP_LIKE :与LIKE的功能相似 2,REGEXP_INSTR :与INSTR的功能相似 3,REGEXP_SUBSTR :与SUBSTR的功能相似 4,REGEXP_REPLACE :与REPLACE的功能相似 它们在用法上与Oracle SQL 函数LIKE、INSTR、SUBSTR 和REPLACE 用法相同, 但是它们使用POSIX 正则表达式代替了老的百分号(%)和通配符(_)字符。 POSIX 正则表达式...
可以通过如下SQL查询表中所有字段通过逗号连接，然后复制出来进行select查询再导出
The OracleREGEXP_REPLACE()function replaces a sequence of characters that matches a regular expression pattern with another string. TheREGEXP_REPLACE()function is an advanced version of theREPLACE()function. Syntax# The following illustrates the syntax of the OracleREGEXP_REPLACE()function: REGEXP_...
Oracle Database - Enterprise Edition - Version 18.7.0.0.0 and laterInformation in this document applies to any platform.SymptomsREGEXP_REPLACE extends the functionality of the REPLACE function by letting you search a string for a regular expression pattern.But regular expressions are CPU intensive an...
FUNCTION CheckName(NameStr in VARCHAR2) RETURN integer As BEGIN --符合返回1,不符合返回0 if(NameStr is null or length(NameStr)<2) then return 0; else if(NameStr like '%未取名%') then RETURN 0; end if; if regexp_like(NameStr,'^([a-z]+|[0-9]+|[A-Z]+)$') then ...
Oracle 正则表达式函数-REGEXP_REPLACE 使用例子 原文在这:戳 REGEXP_REPLACE 6个参数 第一个是输入的字符串 第二个是正则表达式 第三个是替换的字符 第四个是标识从第几个字符开始正则表达式匹配。(默认为1) 第五个是标识第几个匹配组。(默认为全部都替换掉)...
default, the function returnssource_charwith every occurrence of the regular expression pattern replaced withreplace_string. The string returned is in the same character set assource_char. The function returnsVARCHAR2if the first argument is not a LOB and returnsCLOBif the first argument is a ...
EN简要比较： replace 字符串级别的代替 如：SELECT REPLACE('accd','cd','ef') from dual; --> ...
Oracle/ Oracle Database/ Release 12.2 SQL Language Reference Share on LinkedInShare on XShare on FacebookShare on Email Syntax Description of the illustration regexp_replace.eps Purpose REGEXP_REPLACEextends the functionality of theREPLACEfunction by letting you search a string for a regular expressi...
REGEXP_REPLACE(source_char, pattern [, replace_string [, position [, occurrence [, match_param ] ] ] ] ) Parameters Return type The return type is the same as the data type ofsource_char. Examples The following example replaces, with*, all characters inOCEANBASE databasethat match(A|B...