match_type: A string that specifies how to perform matching. The meaning is as described for REGEXP_LIKE(). Prior to MySQL 8.0.17, the result returned by this function used the UTF-16 character set; in MySQL 8.0.17 and later, the character set and collation of the expression searched f...
create or replace 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]+)$...
,DEPTID; regexp_replace(dbms_lob.substr('ssss'),'[^[:print:]]','')
create or replace FUNCTION CheckName(NameStr in VARCHAR2) RETURN integer As BEGIN --符合返回1,不符合返回0 if(NameStr is null or length(NameStr)<2) then return 0; else if(NameStr like '%未取名%') then RETURN 0; end if; if regexp_like(NameStr,'^([a-z]+|[0-9]+|[A-Z]+)$...
(2)用户定义聚集函数(user-defined aggregate function,UDAF) UDAF 接受多个输入数据行,并产生一个输出数据行(多对1)。像COUNT 和MAX这样的函数都是聚集函数。 (3)用户定义表生成函数(user-defined table-generating function , UDTF) UDTF 操作作用于单个数据行,且产生多个数据行(即一个表)作为输出(1对多)。
The `REGEXP_REPLACE` function in MySQL allows you to search for a regular expression pattern in a string and replace it with a specified replacement string. It is useful for performing text manipulation and data cleaning tasks. Usage The `REGEXP_REPLACE` function is used when you need to fi...
Information 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 and computationally expensive,so if the SQL with following conditions ...
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
Learn the syntax of the regexp_replace function of the SQL language in Databricks SQL and Databricks Runtime.
SELECTREGEXP_REPLACE('Th♥is∞ is a dem☻o of REGEXP_♫REPLACE function','[^a-z_A-Z ]')FROMdual;Code language:SQL (Structured Query Language)(sql) The following is the result: This query is useful in a data cleaning task process. ...