©SQL :: Manager
HomeProgram InformationTechnical detailsFree downloadDonate for a cup of coffee
myway SQL Manager for MySQL and MariaDB, Download on Uptodown
SQL functionMySQLMariaDB

The INSTR SQL Function in MySQL and MariaDB - Search in string

INSTRSyntax:INSTR(String, Search string)
Return value:INTEGER
Function type:String function
Function Description

The INSTR() function returns the position of the first occurrence of "Search string" in "String".

If "Search string" is not found, the function returns 0.

If "Search string" is empty, the result is 1.

If "String" or "Search string" contain numeric values, these are interpreted as character strings.

The INSTR() function performs a case-sensitive search.

If either argument is NULL, the INSTR() function returns NULL.

SQL Examples for the INSTR function

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15

select instr('Test''e');
select instr('Test''st');
select instr('Test''T');
select instr('Test''t');

select instr(123456, 4);

select instr('Test''');
select instr('Test''x');
select instr('''');

select instr(null'e');
select instr('Test'null);

instr('Test', 'e')
int(11)
2
instr('Test', 'st')
int(11)
3
instr('Test', 'T')
int(11)
1
instr('Test', 't')
int(11)
4
instr(123456, 4)
int(11)
4
instr('Test', '')
int(11)
1
instr('Test', 'x')
int(11)
0
instr('', '')
int(11)
1
instr(null, 'e')
int(11)
NULL
instr('Test', null)
int(11)
NULL
The examples were created with the MyWAY SQL manager: Download

How to use the INSTR() function in MySQL and MariaDB databases

In MySQL and MariaDB, the INSTR() function is used to determine the position of a substring within a string. The function returns the index of the first occurrence of the substring within the string, or 0 if the substring was not found. The function can be used for various purposes, such as searching for specific patterns, extracting parts of a string, or performing conditional operations based on the presence or position of a substring.
INET_ATONINET_NTOAINSERTINSTRINTERVALIS_IPV4IS_IPV6

Further MySQL und MariaDB SQL String functions

CHARCHAR(Character code, [, Charset])
More about CHAR Function

CHRCHR(Character code)
More about CHR Function

CONCATCONCAT(Strings ('str1','str2', ...))
More about CONCAT Function

CONCAT_WSCONCAT_WS(Separator, Strings ('str1','str2', ...))
More about CONCAT_WS Function

ELTELT(Index, Strings ('str1','str2', ...))
More about ELT Function

EXPORT_SETEXPORT_SET(Bits, On, Off [, Separator] [, Number of bits])
More about EXPORT_SET Function

EXTRACTVALUEEXTRACTVALUE(XML, XPath)

FIELDFIELD(Search string, Strings ('str1','str2', ...))
More about FIELD Function

FORMATFORMAT(Number, Decimals [, Region])
More about FORMAT Function

INSERTINSERT(String, Position, Length, String to insert)
More about INSERT Function

LCASELCASE(String)
More about LCASE Function

LEFTLEFT(String, Length)
More about LEFT Function

LOAD_FILELOAD_FILE(File name)

LOWERLOWER(String)
More about LOWER Function

LPADLPAD(String, Length, String to append)
More about LPAD Function

LPAD_ORACLELPAD_ORACLE(String, Length, String to append)
More about LPAD_ORACLE Function

LTRIMLTRIM(String)
More about LTRIM Function

MAKE_SETMAKE_SET(Bits, Strings ('str1','str2', ...))
More about MAKE_SET Function

MIDMID(String, Position [, Length])
More about MID Function

QUOTEQUOTE(String)
More about QUOTE Function

REPEATREPEAT(String, Number)
More about REPEAT Function

REPLACEREPLACE(String, Search, Replace)
More about REPLACE Function

REVERSEREVERSE(String)
More about REVERSE Function

RIGHTRIGHT(String, Length)
More about RIGHT Function

RPADRPAD(String, Length, String to append)
More about RPAD Function

RPAD_ORACLERPAD_ORACLE(String, Length, String to append)
More about RPAD_ORACLE Function

RTRIMRTRIM(String)
More about RTRIM Function

SOUNDEXSOUNDEX(String)
More about SOUNDEX Function

SPACESPACE(Number)
More about SPACE Function

SUBSTRSUBSTR(String, Position, Length)
More about SUBSTR Function

SUBSTRINGSUBSTRING(String, Position, Length)
More about SUBSTRING Function

SUBSTRING_INDEXSUBSTRING_INDEX(String, Delimiter, Number)
More about SUBSTRING_INDEX Function

TRIMTRIM([Type] [, Delete character], , String)
More about TRIM Function

TRIM_ORACLETRIM_ORACLE([Type] [, Delete character], , String)
More about TRIM_ORACLE Function

UCASEUCASE(String)
More about UCASE Function

UPPERUPPER(String)
More about UPPER Function

WEIGHT_STRINGWEIGHT_STRING(String [AS Format] [LEVEL Level] [Sorting])
More about WEIGHT_STRING Function

ASCIIASCII(String)
More about ASCII Function

BIT_LENGTHBIT_LENGTH(String)
More about BIT_LENGTH Function

CHAR_LENGTHCHAR_LENGTH(String)
More about CHAR_LENGTH Function

CHARACTER_LENGTHCHARACTER_LENGTH(String)
More about CHARACTER_LENGTH Function

FIND_IN_SETFIND_IN_SET(Search string, Set of values)
More about FIND_IN_SET Function

LENGTHLENGTH(String)
More about LENGTH Function

LENGTHBLENGTHB(String)
More about LENGTHB Function

LOCATELOCATE(Search string, String [, Position])
More about LOCATE Function

OCTET_LENGTHOCTET_LENGTH(String)
More about OCTET_LENGTH Function

ORDORD(String)
More about ORD Function

POSITIONPOSITION(Search string IN String)
More about POSITION Function

Numeric functionsString functionsRegular ExpressionsDate and Time functions
Comparison functionsEncryption & CompressionConversion functionsNULL functions
Aggregate functionsWindow functionsJSON functionsGeometric functions
Sequence functionsInformation functionsDynamic ColumnsMiscellaneous functions
More information about the INSTR SQL function: mysql.com and mariadb.com and w3schools.com
Updated: 2023-09-17ImprintContactTerms & conditionsPrivacy & CookiesUpdatesSitemapFacebookLinkedinTwitterStatistics©2020-2024 Heino Cunze-Fischer