SELECT CASE WHEN INSTR('Hello, World!', ',') > 0 THEN SUBSTR('Hello, World!', INSTR('Hello, World!', ',') + 1) ELSE 'Special character not found' END AS Substring_After_Comma FROM DUAL; 这个查询在找不到逗号时返回'Special character not found'。你可以根据实际需求调整这个逻辑...
Put a space after every characterSELECT testcol,REGEXP_REPLACE(testcol, '(.)', '\1 ') RESULT FROM test WHERE testcol like 'S%'; Replace multiple spaces with a single spaceSELECTREGEXP_REPLACE('500 Oracle Parkway, Redwood Shores, CA', '( ){2,}', ' ') RESULT FROM dual; Insert a...
Anchoring CharactersCharacterClass Description^Anchor the expressiontothestartofa line $ Anchor the expressiontotheendofa line 十一、官方说明(英文原版说明) Equivalence Classes Character Class Description = = Oracle supports the equivalence classes through the POSIX '[==]' syntax. A base letter and al...
–将每个单词的第一个字母大写其它字母小写返回。 select INITCAP(‘substr,abc,substring’) from dual; –返回i在MISSISSIPPI中第3次出现的位置, select INSTR(‘Mississippi’,’i’,5,3) from dual; select INSTR(‘Mississippi’,’i’,-2,3) from dual; –返回的是字节 select INSTRB(‘Mississippi’,’...
Substring to Find: ' ' is the space character we are looking for within the target string. Result: The function returns the position of the first occurrence of the space character within the string. Since the first space in the string 'THIS IS THE THING' appears after the word 'THIS', ...
一、sql server提供了三种常用截取字符串方法,LEFT()、RIGHT()、SUBSTRING()1、LEFT()函数语法:LEFT(character,integer) 注释:参数1:要截取的字符串,参数2:截取字符个数说明:返回从字符串左边开始指定个数的字符select LEFT('SqlServer_2014',3)结果:Sql2、RIGHT()函数语法:RIGHT(charact ...
TRANSFORM_VALUE ERROR_LOG_SAMPLE[DBMS_TYPE:regexp_replace("DBMS_TYPE",'Oracle','PostgreSQL')] or to replace all Oracle char(0) in a string by a space character: TRANSFORM_VALUE CLOB_TABLE[CHARDATA:translate("CHARDATA", chr(0), ' ')] The expression will be applied in the SQL stateme...
SUBSTRING expr SUBSTRING(expr,m[,n]) The SUBSTRING function returns a substring of the text string operandexprof lengthncharacters beginning at themth character. If you omit the third operand, the substring starts frommand finishes at the end ofexpr. ...
Optional. If a return_option of 0 is provided, the position of the first character of the occurrence of pattern is returned. If a return_option of 1 is provided, the position of the character after the occurrence of pattern is returned. If omitted, it defaults to 0. match_parameter Optio...
java.io包包含一个“PrintStream”类,该类有两种格式方法,可以用来替换“print”和“println”。这些方法“format”和“printf”彼此等效。熟悉的“系统”。out”恰好是“PrintStream”对象,因此您可以在“System.out”上调用“PrintStream”方法。因此,您可以在代码中以前使用过“print”或“println”的任何地方使用“for...