Column constant value pls help

Question

COL cnt noprint
COLUMN  cnt NEW_VALUE rowcountI am using this for select query as below
ROWNUM cnt, COUNT (*) OVER () cntbut issue is when null rows returned.... this rowcount is not initilized.
while i am usng for trailer record
SELECT '* Trailer record *' || '|' || &rowcount
  FROM DUALit is giving error as below
FROM DUAL
ERROR at line 2:
ORA-00936: missing expression
Pls help
S

Answer 1

Solomon Yakobson wrote:
Post EXACT and COMPLETE snippet of SQL*Plus session showing what you did. I can't reproduce it:
SQL> COLUMN  cnt NEW_VALUE rowcount
SQL> SELECT COUNT (*) OVER () cnt
2    FROM DUAL
3  /Suppose if cnt gives no record then rowcount is null at that time rowcount is not initiliazed.
>
>
>
>
SQL> SELECT '* Trailer record *' || '|' || &rowcount
2 FROM DUAL
3 /
old 1: SELECT '* Trailer record *' || '|' || &rowcount
new 1: SELECT '* Trailer record *' || '|' || Missing expression this was my error
>
'*TRAILERRECORD*'||'
* Trailer record *|1>
SQL>
SY.