NULL value in the print result
I run a SELECT statement on the form below:
SELECT col1 |' | ' || col2 |' | ' || COL3
TABLE;
It gives me the following outprint, which is what I need
col1 | col2. col3
VARCHAR2. number | VARCHAR2
The problem is when col2 returns a NULL value, then I get this:
VARCHAR2. VARCHAR2
When what I want is this:
VARCHAR2. (null) | VARCHAR2
Is it possible to get my results of the query to print the value NULL (null)?
I tried the function NVL NVL (col2, 'null'), but it won't work because there is a mismatch on data types. I can get the NULL value, printed by concatenating don't not columns and save results to csv, but that does not give me the formatting that I want.
You can convert the character number column, and then look for the NVL.
See below:
with data as ( select 'col1' col1, 1 col2, 'col3' col3 from dual union all select 'col1' col1, null col2, 'col3' col3 from dual ) select col1 || '|' || nvl(to_char(col2), 'null') || '|' || col3 from data; COL1||'|'||NVL(TO_CHAR(COL2),'NULL')||'|'||COL3 -------------------------------------------------- col1|1|col3 col1|null|col3
Tags: Database
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my version is oracledb10g:
I am doubted simple.
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Hi experts,my version is oracledb10g:
I am doubted simple.
for example:
create table ex1 (e varchar2 (20));
Insert ex1 (null).
insert into ex1 (e)
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so my question is:
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delete from
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------------------
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I must examine DataDictionary and collect data there?
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}Try
{
answer = row.getAttribute("Answer").toString ();
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{
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{
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on the other
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Gerard -
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With for example the query tree:
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workspace: imagetest_ws
user: guru
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