Re: Array paramiters

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От ben sagal
Тема Re: Array paramiters
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Msg-id b72a6e130706050746m37c191e7j3d5ceababe467566@mail.gmail.com
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Ответ на Re: Array paramiters  (Andreas Joseph Krogh <andreak@officenet.no>)
Ответы Re: Array paramiters  (Andreas Joseph Krogh <andreak@officenet.no>)
Re: Array paramiters  (Pete Lewin-Harris <pete@kinomi.com>)
Re: Array paramiters  (Gregory Stark <stark@enterprisedb.com>)
Список pgsql-jdbc
I would ideally like to use a prepared statement, in which i can on each execution insert a different array? the method u suggest will not allow use of a prepared statement.
 
thanks Ben

 
On 6/5/07, Andreas Joseph Krogh <andreak@officenet.no> wrote:
On Tuesday 05 June 2007 16:23:29 ben sagal wrote:
> is there any way to do that with a variable amount of elements in the
> array?

I'm not quite sure what you mean?
Say you have the following:

int[] num = new int[]{1,2,3};
StringBuffer sb = new StringBuffer();
sb.append("SELECT * FROM items WHERE id IN(").append(generateCSV("?",
num.length)).append(")");
for (int i = 0; i < num.length; i++) {
       ps.setInt(i, num[i]);
}
ps.executeQuery();

The generateCSV-method must return a comma-separated String, in this case the
String "?,?,?", because num-array has length==3.

then num-array can be of any lenth you want.

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Andreas Joseph Krogh <andreak@officenet.no>
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