Nettet24. mar. 2016 · SELECT Name, CASE WHEN SUBSTR (NAME, 1, 2) = 'CG' THEN SUBSTR (NAME,INSTR (NAME,'_',1,2)+ 1,LENGTH (NAME)) ELSE REPLACE (REGEXP_SUBSTR (NAME,'_ [^_]+',1,2),'_','') END AS OPT, CASE WHEN SUBSTR (NAME, 1, 2) = 'CG' THEN SUBSTR (NAME,INSTR (NAME, '_',1,1) + 1, LENGTH … NettetIn Oracle, INSTR function returns the position of a substring in a string, and allows you to specify the start position and which occurrence to find. In SQL Server, you can use CHARINDEX function that allows you to specify the start position, but not the occurrence, or you can use a user-defined function.
Re: Fix a Oracle-compatible instr function in thedocumentation ...
NettetThe InStrB function is used with byte data contained in a string. Instead of returning the character position of the first occurrence of one string within another, InStrB returns the … NettetIn Oracle the INSTR function allows you to find the position of substring in a string. It accepts 2, 3 or 4 parameters. PostgreSQL has the POSITION function, but it accepts 2 parameters only, so you have to use a user-defined function when converting Oracle INSTR with more than 2 parameters. INSTR with 2 Parameters - Search from Beginning labor ready fairfax va
The SQL Substring Function in 5 Examples LearnSQL.com
Nettet7. des. 2024 · INSTR () : This function in MySQL is used to return the location of the first occurrence of a substring within a given string. Syntax : INSTR (string_1, string_2) Parameters : This function accepts 2 parameters. string_1 – The string where searching takes place. string_2 – The string/sub-string which will be searched in string_1. Returns : Nettet26. sep. 2024 · The SUBSTR and INSTR functions can be used together to get a specific string up until the occurrence of another character or string. This is good for when you need to extract part of a string in a column, but the length is varied. You would use the INSTR function as the length parameter: SUBSTR (string, 1, INSTR(string, substring, … NettetThe SQL INSTR function allows you to find the starting location of a substring within a string. It is used by Oracle SQL and MySQL; many other SQL implementations have … promise async await 区别