Anonymous Block in SQL Developer

Question

I am using SQL Developer 3.1x and trying to run a pretty simple Anonymous block and am having trouble declaring a variable. This block runs successfully:
set SERVEROUTPUT on
--declare
-- V_CRT := CHR(13);
begin
for t in (select owner, table_name from dba_tables where owner = 'ABC123)
LOOP
DBMS_STATS.GATHER_TABLE_STATS(t.owner, t.table_name);
end loop;
DBMS_OUTPUT.PUT_LINE('Statistics Calculations complete');
DBMS_OUTPUT.PUT_LINE('Begin Record Counts');
-- DBMS_OUTPUT.PUT_LINE(v_crt);
-- DBMS_OUTPUT.PUT_LINE(V_CRT);
end;
If I remove my comments in an effort to include my Declare statement, I receive: PLS-00103: Encountered the symbol "=" when expecting one of the following
How do I declare / initialize the variable "v_crt"? Admittedly this is a VERY basic Block but I just started to build out a more "robust" procedure and am getting stumped.
Thank you for your help!

Answer 1

The symbol *:=* is for assignment, not variable declaration. Just give the variable name and then its type, like this:DECLARE
  V_CRT VARCHAR2(13);You can give it a default value if you want to.DECLARE
  V_CRT VARCHAR2(13) := 'Hello';Looks like you want it to be a carriage return character.DECLARE
  V_CRT VARCHAR2(1) := CHR(13);