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    <p>You can use the <a href="http://docs.oracle.com/cd/E11882_01/server.112/e26088/functions026.htm" rel="nofollow"><code>chr</code> function</a> to replace a character with it's numeric equivalent.</p> <pre><code>SYS_CONNECT_BY_PATH(column name, chr(33)) </code></pre> <p>Or to use a line feed, which should also be fine:</p> <pre><code>SYS_CONNECT_BY_PATH(column name, chr(13)) </code></pre> <p>It's not strictly ASCII as it depends on your character set, but it will probably work for you. You can see the numeric values using the reverse <a href="http://docs.oracle.com/cd/E11882_01/server.112/e26088/functions013.htm" rel="nofollow"><code>ascii</code> function</a>, which also isn't really quite ASCII, but again close enough especially if you're always using the same character set. So <code>ascii('!')</code> would give you <code>33</code>.</p> <hr> <p>As you've discovered, giving anything except a fixed string literal gives:</p> <blockquote> <pre><code>SQL Error: ORA-30003: illegal parameter in SYS_CONNECT_BY_PATH function 30003. 00000 - "illegal parameter in SYS_CONNECT_BY_PATH function" *Cause: *Action: use a non-empty constant string as the second argument, then retry the operation. </code></pre> </blockquote> <p>This is why I usually test things before posting, but this seemed so simple... You can get around that with <code>replace</code>:</p> <pre><code>REPLACE(SYS_CONNECT_BY_PATH(column name, '/'), '/', chr(33)) </code></pre> <p>Borrowing an <a href="http://docs.oracle.com/cd/E11882_01/server.112/e26088/functions183.htm" rel="nofollow">example from the manual</a>:</p> <pre><code>SELECT LPAD(' ', 2*level-1) ||replace(SYS_CONNECT_BY_PATH(last_name, '/'),'/',chr(33)) "Path" FROM employees START WITH last_name = 'Kochhar' CONNECT BY PRIOR employee_id = manager_id; Path -------------------------------------------------- !Kochhar !Kochhar!Greenberg !Kochhar!Greenberg!Faviet !Kochhar!Greenberg!Chen !Kochhar!Greenberg!Sciarra !Kochhar!Greenberg!Urman !Kochhar!Greenberg!Popp !Kochhar!Whalen !Kochhar!Mavris !Kochhar!Baer !Kochhar!Higgins !Kochhar!Higgins!Gietz </code></pre>
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    1. POASCII for SYS_CONNECT_BY_PATH ORACLE sql
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    1. USAlex Poole
    1. USAlex Poole
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    1. COHello Alex,thanks for ur comment. but when i used SYS_CONNECT_BY_PATH(column name, chr(33)), it is showing illegal parameter error
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      1. USVinod Chelladurai
    2. COHmm, yes, `ORA-30003: illegal parameter in SYS_CONNECT_BY_PATH function`. Interesting. Why do you want to use the ASCII value instead of a fixed character - are you calling this from somewhere where the `!` (and line feed) is causing a problem?
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      1. USAlex Poole
    3. COHi all,i found a solution to use ascii in SYS_CONNECT_BY_PATH but still it|s not working for Line feed alone. For example, replace(sys_connect_by_path(ename, '!'), '!', chr(64)) would replace '!' by '@' but replace(sys_connect_by_path(ename, '!'), '!', chr(10 )) is not working.
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      1. USVinod Chelladurai
 

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