Examples: Oracle INSTR function The following examples explore how the INSTR function works.Basic Usage:-- The following SQL statement uses the INSTR function to find the position --of the substring 'TH' within the string 'THIS IS THE THING'. SELECT INSTR('THIS IS THE THING', -- The ...
This Oracle tutorial explains how to use the Oracle/PLSQL INSTRC function with syntax and examples.Description The Oracle/PLSQL INSTRC function returns the location of a substring in a string, using Unicode complete characters.Syntax The syntax for the INSTRC function in Oracle/PLSQL is: INSTR...
The OracleINSTR()function searches for a substring in a string and returns the position of the substring in a string. Syntax# The following illustrates the syntax of the OracleINSTR()function: INSTR(string , substring [, start_position [, occurrence]])Code language:SQL (Structured Query Languag...
return_option 可选 指定Oracle返回的位置: 假设指定0,那么Oracle将返回出现的第一个字符的位置。这是默认的。 假设指定1,则Oracle返回字符之后发生的位置。 match_parameter 可选。它同意你改动REGEXP_INSTR功能匹配的行为。 它能够是以下的组合: Examples 匹配单个字符 以下看一个最简单的情况。找到字符串中的第一...
Appendix C inOracle Database Globalization Support Guidefor the collation determination rules, which define the collation theINSTRfunctions use to compare thesubstringargument with substrings ofstring Examples The following example searches the stringCORPORATEFLOOR, beginning with the third character, for th...
Oracle REGEXP_INSTR() function examples# This regular expression matches any 11-12 digit phone number with optional group characters and (+) sign at the beginning: (\+?( |-|\.)?\d{1,2}( |-|\.)?)?(\(?\d{3}\)?|\d{3})( |-|\.)?(\d{3}( |-|\.)?\d{4})Code languag...
INSTR('CORPORATE FLOOR','OR', 3, 2)中,源字符串为'CORPORATE FLOOR', 目标字符串为'OR',起始位置为3,取第2个匹配项的位置。 默认查找顺序为从左到右。当起始位置为负数的时候,从右边开始查找。 所以SELECT INSTR('CORPORATE FLOOR', 'OR', -1, 1) "Instring" FROM DUAL的显示结果是 ...
This Oracle tutorial explains how to use the Oracle/PLSQLREGEXP_INSTR functionwith syntax and examples. Description The Oracle/PLSQL REGEXP_INSTR function is an extension of theINSTR function. It returns the location of a regular expressionpatternin astring. This function, introduced in Oracle 10g...
The Oracle function instr returns an integer indicating the position of the character in string that is the first character of this occurrence. This function has the following syntax: instr(string, substring [,position [,occurrence]]) with: string: the string that is searched. substring: the...
INSTR(char1,char2[,i[,j]]) Parameters Return type The return type isNUMBER. Examples The following example returns the position of the second occurrence ofainOceanBasein forward search. obclient> SELECT INSTR('OceanBase','a',1,2) "INSTR" FROM DUAL; ...