[英]How to run multiple Delete sql statement with the help of java JDBC?
我想一次刪除三個不同的表,並為此創建了一個非常簡單的SQL語句,如下所示:
DELETE FROM tbl1;DELETE FROM tbl2;DELETE FROM tbl3;
當我直接在mysql中運行但從Java中運行時,此語句正確!
我的Java代碼:
public boolean clearTables()
{
boolean ans = false;
if (con != null)
{
try
{
String deleteQuery = " DELETE FROM tbl1;DELETE FROM tbl2;DELETE FROM tbl3;";
Statement st = con.createStatement();
st.execute(deleteQuery);
ans = true;
}
catch (Exception e)
{
e.printStackTrace();
ans= false;
}
}
return ans;
}
如何在Java中一次運行多個SQL語句?
使用addBatch
然后executeBatch
:
Statement st = con.createStatement();
st.addBatch("DELETE FROM tbl1");
st.addBatch("DELETE FROM tbl2");
st.addBatch("DELETE FROM tbl3");
int[] results = st.executeBatch();
然后results
將包含一個數組,其中包含從每個表中刪除的行數。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.