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POAvoid Null Value in JSP Table Textbox if no entry in database
 

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  1. POAvoid Null Value in JSP Table Textbox if no entry in database
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    <pre><code>String sql="SELECT a.ID,a.VISITOR_TEXT,a.COMPANY_TEXT,a.CONTACT,a.PERSON_TO_MEET,a.DEPARTMENT_TEXT,a.FLOOR,b.BELONGING_TYPE,b.BELONGING_TEXT ,a.INTIME, c.EXIT_TIME FROM tm_visitor a LEFT JOIN tm_belonging b ON b.BID=a.ID LEFT JOIN tm_exit c ON c.ID=a.ID limit "+i+",10"; System.out.println(sql); ResultSet rs=st.executeQuery(sql); while(rs.next()) { ar.add(rs.getInt("ID")); ar.add(rs.getObject("VISITOR_TEXT")); ar.add(rs.getObject("COMPANY_TEXT")); ar.add(rs.getObject("CONTACT")); ar.add(rs.getObject("PERSON_TO_MEET")); ar.add(rs.getObject("DEPARTMENT_TEXT")); ar.add(rs.getObject("FLOOR")); ar.add(rs.getObject("BELONGING_TYPE")); ar.add(rs.getObject("BELONGING_TEXT")); ar.add(rs.getObject("INTIME")); ar.add(rs.getObject("EXIT_TIME")); } &lt;tr&gt; &lt;td align="center"&gt;&lt;input type="text" name="id" value="&lt;%=itr.next()%&gt;" readonly size="15"&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input type="text" name="visitorname" value="&lt;%=itr.next()%&gt;" readonly size="20"&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input type="text" name="company" value="&lt;%=itr.next()%&gt;" readonly size="20"&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input type="text" name="contact" value="&lt;%=itr.next()%&gt;" readonly size="10"&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input type="text" name="whometomeet" value="&lt;%=itr.next()%&gt;" readonly size="20"&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input type="text" name="department" value="&lt;%=itr.next()%&gt;" readonly size="20"&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input type="text" name="floor" value="&lt;%=itr.next()%&gt;" readonly size="7"&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input type="text" name="btype" value="&lt;%=itr.next()%&gt;" readonly size="15"&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input type="text" name="bel" value="&lt;%=itr.next()%&gt;" readonly size="15"&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input type="text" name="intime" value="&lt;%=itr.next()%&gt;" readonly size="20"&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input type="text" name="exittime" value="&lt;%=itr.next()%&gt;" readonly size="20"&gt;&lt;/td&gt; &lt;/tr&gt; </code></pre> <p>After executing above query if value in value in tm_exit.EXIT_TIME is not present then display NULL in JSP table text box how do I avoid this</p> <p>I tried:</p> <pre><code>&lt;%! String blanknull(String s) { return (s == null) ? "" : s; } %&gt; </code></pre> <p>but no use, please help?</p> <p>here is query which I am using to fetch data</p> <pre><code>SELECT a.ID,a.VISITOR_TEXT,a.COMPANY_TEXT,a.CONTACT,a.PERSON_TO_MEET,a.DEPARTMENT_TEXT,‌​a.FLOOR,b.BELONG ING_TYPE,b.BELONGING_TEXT ,a.INTIME, c.(ifnull(EXIT_TIME,'NA')) as EXIT_TIME FROM tm_visitor a LEFT JOIN tm_b elonging b ON b.BID=a.ID LEFT JOIN tm_exit c ON c.ID=a.ID; </code></pre> <p>but gives following error</p> <p>ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL serv er version for the right syntax to use near '(ifnull(EXIT_TIME,'NA')) as EXIT_TIME FROM tm_visitor a LEFT JOI N tm_belonging </p>
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USybc126
    1. USybc126
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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    1. VO
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      1. POAvoid Null Value in JSP Table Textbox if no entry in database
      1. This table or related slice is empty.
      1. VTDownMod
    2. VO
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      1. POAvoid Null Value in JSP Table Textbox if no entry in database
      1. This table or related slice is empty.
      1. VTUpMod
    1. COcaps lock will not help you get answer!!!!!!!!
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      1. UShovanessyan
    2. COYou are hitting database from JSP using scriptlets. This is a really bad design. You should seriously think about db manipulation in your java code and just send the data you need to the page.
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      1. POAvoid Null Value in JSP Table Textbox if no entry in database
      1. USpacman
    3. CO@pacman:i don't know other way of db manipulation please tell me how it can be manipulated in other way.
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      1. POAvoid Null Value in JSP Table Textbox if no entry in database
      1. USybc126
 

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