To do this, you can use the following syntax: INSTR(string, substring, -1)。 For example, the following query finds the last occurrence of the substring 'abc' within the string 'abcdef': SELECT INSTR('abcdef', 'abc', -1) FROM dual; The result of this query is 4, which is the...
下面先说明一下instr()的功能和语法:(函数的语法是从http://www.techonthenet.com/oracle/functions/index.htm处得到的,相当清晰明了:) In Oracle/PLSQL, the instr function returns the location of a substring in a string. The syntax for the instr function is: instr (string1, string2, [start_p...
Instr函数 SYNTAX: Instr([start, ] strToBeSearched, strSearchFor [, compare]) ARGUMENTS: Start为搜索的起始值,strToBeSearched接受搜索的字符串 strSearchFor要搜索的字符.compare比较方式(详细见ASP常数) EXAMPLE: <% strText = "This is a test!!" pos = Instr(strText, "a") response.write pos EX...
oracle instr语法 oracle instr 语法 The syntax for the INSTR function in Oracle is as follows: INSTR(string, search_string [, start_position [, nth_appearance]]) - string: This is the string or expression to be searched. - search_string: This is the string to be searched for within the...
This Oracle tutorial explains how to use the Oracle / PLSQL INSTR function with syntax and examples. The Oracle / PLSQL INSTR function returns the location of a substring in a string.
syntax: instr(string,substring,[position],[occurrence]) syntax in hive: instr(string,substring) eg: select instr('corporate floor','or',3,2) from dual; would return '14' remarks: The default values of both position and occurrence are 1, meaning Oracle begins searching at the first characte...
In Oracle/PLSQL, the instr function returns the location of a substring in a string.The syntax for the instr function is:instr (string1, string2, [start_position], [nth_appearance])string1 is the string to search.string2 is the substring to search for in string1.start_position is the...
PostgreSQL模仿Oracle的instr函数 -- -- instr functions that mimic Oracle's counterpart -- Syntax: instr(string1, string2, [n], [m]) where [] denotes optional parameters. -- -- Searches string1 beginning at the nth character for the mth occurrence ...
nls_language, optional, is the nls language used to convert x to a number INSTR(string, pattern-to-find) INSTRreturns the location (beginning) of a pattern in a given string. Its simple form is: The general syntax of INSTR is:
1In Oracle/PLSQL, the instr function returns the location of a substring in a string. 2The syntax for the instr function is: 3instr (string1, string2, [start_position], [nth_appearance]) 4string1 is the string to search. 5string2 is the substring to search for in string1. 6start...