The return value of the Oracle SUBSTR function is always the same data type as the one provided for string. So, if STRING is a VARCHAR2, the function returns VARCHAR2. Examples of the SUBSTR Function Here are some examples of the Oracle SUBSTR function. I find that examples are the best...
The said code in Oracle's PL/SQL defines a function that retrieves the first five characters of the department name based on the provided department ID. If a department with the given ID is found, it returns the first five characters otherwise, it returns NULL. The two variables v_departme...
See Also: Oracle Database Globalization Support Guidefor more information aboutSUBSTRfunctions and length semantics in different locales Examples The following example returns several specified substrings of "ABCDEFG": SELECT SUBSTR('ABCDEFG',3,4) "Substring" FROM DUAL; Substring --- CDEF SELECT SUBST...
Appendix C in Oracle Database Globalization Support Guide for the collation derivation rules, which define the collation assigned to the character return value of SUBSTR Examples The following example returns several specified substrings of "ABCDEFG": Copy SELECT SUBSTR('ABCDEFG',3,4) "Substring" ...
Oracle Database Globalization Support Guidefor more information aboutSUBSTRfunctions and length semantics in different locales Examples The following example returns several specified substrings of "ABCDEFG": SELECT SUBSTR('ABCDEFG',3,4) "Substring" ...
This Oracle tutorial explains how to use the Oracle/PLSQL SUBSTR function with syntax and examples.Description The Oracle/PLSQL SUBSTR functions allows you to extract a substring from a string.Syntax The syntax for the SUBSTR function in Oracle/PLSQL is: SUBSTR( string, start_position [, ...
The Oracle REGEXP_SUBSTR() function accepts 6 arguments: 1) source_string is a string to be searched for. 2) pattern is the regular expression pattern that is used to search for in the source string. 3) start_position is positive integer that indicates the starting position in the source...
Examples 找出匹配的数字 SELECT REGEXP_SUBSTR ('hello my phone is 520 ', '[0-9]+') FROM dual; --520 1. 以下这个样例返回指定第三次出现的字符 SELECT REGEXP_SUBSTR ('i like beijing tiananmen', '(\S*)(\s)', 1, 3) FROM dual; --beijing ...
Oracle 12c, Oracle 11gExamples: Oracle REGEXP_SUBSTR function The following example examines the string, looking for the first substring bounded by commas. Oracle Database searches for a comma followed by one or more occurrences of non-comma characters followed by a comma and returns the ...
This Oracle tutorial explains how to use the Oracle / PLSQL REGEXP_SUBSTR function with syntax and examples. This function, introduced in Oracle 11g, will allow you to extract a substring from a string using regular expression pattern matching.