When migrating tables coming from other DBMSs to Oracle, one of the standard tasks is to replace all VARCHAR(n) fields with VARCHAR2(n) fields (provided n <= 4000). Why does …

Jan 7, 2015 · To clarify, the actual limit of the VARCHAR2 datatype is not 4000 characters, but 4000 bytes. The same is true inside of PL/SQL (32,767 bytes). This can make a significant …

Jul 6, 2018 · My understanding is varchar2 is better is in performance than CLOB when we there is a need to access the CLOB datatype or there is need to index it. Is that correct ?

Sep 20, 2023 · Shouldn't this reflect for the other fields too? For e.g. STATUS VARCHAR2(4000 CHAR). In the data this is coming as expected.

Aug 10, 2023 · The result of this is that the text strings being generated by the script are now in certain cases exceeding 200 characters. I therefore need a way to alter the varchar (200) in …

Mar 22, 2016 · I have a table emp_details. The column emp_salary is of type varchar2 in which certain rows are null: emp_salary 100,34 null 20,2 30,3 null I need a result in which the column …

Oct 27, 2021 · I need to convert VARCHAR2 columns that store text in unkown character sets into a standard UTF-8 BLOB. The table has more columns, but the ones of interest to me are:

How to replace a CLOB column by a varchar2 (4000) column? Ask Question Asked 14 years, 3 months ago Modified 8 years, 1 month ago

Jul 21, 2015 · 2 I know the definition diference between Varchar2 (x char) x Varchar2 (x byte). varchar2 (20 char) means you can store 20 characters -- whereas varchar2 (20) means you …

What is the syntax for a stored procedure that outputs a refcursor, a varchar2, and a number? I would like to output all three in the result, for the purpose of displaying count, and a message …