UCanAccess無法讀取查詢「... FROM TableName IN'FileSpec'」

Question

我需要使用UCanAccess從MS Access的視圖讀取數據。我有C上兩個數據庫：\ databases中

1. DBA（包含表：TableOfDBa）。

DBB（包含QueryLinkTable {TableOfDBa的視圖}）。

QueryLinkTable是：

SELECT * FROM TableOfDBa IN 'C:\DataBases\DBa.mdb'; 

的代碼是：

package es.fips; 

import java.sql.Connection; 
import java.sql.DatabaseMetaData; 
import java.sql.DriverManager; 
import java.sql.ResultSet; 
import java.sql.SQLException; 
import java.sql.Statement; 

public class ReadData { 
    private static String pathDB = "//C:/DataBases/DBb.mdb"; 

    public static void main(String[] args) { 
     Connection conn = getConnectionOn(); 
     String nameView = "QueryLinKTable"; 

     if(conn != null){ 
      System.out.println("Connected Data Base =D"); 

      if(thereAreViews(conn)){     
       // This can not read the query from view 
       printView(conn, nameView); 
      } 

      printView(conn, nameView); 
     } 
    } 

    public static Connection getConnectionOn() { 
     Connection myConnection = null; 
     try { 
      myConnection = DriverManager.getConnection("jdbc:ucanaccess:" + pathDB); 
      return myConnection; 

     } catch (SQLException e) { 
      System.out.println("Error connecting"); 
      return null; 
     } 
    } 

    public static boolean thereAreViews(Connection oneConn) { 
     try { 
      DatabaseMetaData metaDB = oneConn.getMetaData(); 
      String[] types = { "VIEW" }; 
      int numViews = 0; 

      ResultSet rs = metaDB.getTables(null, null, null, types); 
      while (rs.next()) { 
       System.out.println("View " + (numViews + 1) + ": " + rs.getString(3)); 
       numViews++; 
      } 

      if (numViews > 0) { 
       return true; 
      } else { 
       System.out.println("There are no views"); 
       return false; 
      } 

     } catch (SQLException e) { 
      e.printStackTrace(); 
      return false; 
     } 
    } 

    public static void printView(Connection oneConn, String nameView) { 
     try { 
      Statement st = oneConn.createStatement(); 
      String query = "SELECT * FROM " + nameView; 
      ResultSet rs = st.executeQuery(query); 

      while (rs.next()) { 
       System.out.println("Read! =D"); 
      } 

     } catch (SQLException e) { 
      e.printStackTrace(); 
     } 
    } 
} 

錯誤是：

Connected Data Base =D 
There are no views 
net.ucanaccess.jdbc.UcanaccessSQLException: UCAExc:::3.0.6 usuario no tiene privilegios suficientes o objeto no encontrado: QUERYLINKTABLE 
    at net.ucanaccess.jdbc.UcanaccessStatement.executeQuery(UcanaccessStatement.java:211) 
    at es.fips.ReadData.printView(ReadData.java:69) 
    at es.fips.ReadData.main(ReadData.java:25) 
Caused by: java.sql.SQLSyntaxErrorException: usuario no tiene privilegios suficientes o objeto no encontrado: QUERYLINKTABLE 
    at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source) 
    at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source) 
    at org.hsqldb.jdbc.JDBCStatement.fetchResult(Unknown Source) 
    at org.hsqldb.jdbc.JDBCStatement.executeQuery(Unknown Source) 
    at net.ucanaccess.jdbc.UcanaccessStatement.executeQuery(UcanaccessStatement.java:208) 
    ... 2 more 
Caused by: org.hsqldb.HsqlException: usuario no tiene privilegios suficientes o objeto no encontrado: QUERYLINKTABLE 
    at org.hsqldb.error.Error.error(Unknown Source) 
    at org.hsqldb.error.Error.error(Unknown Source) 
    at org.hsqldb.ParserDQL.readTableName(Unknown Source) 
    at org.hsqldb.ParserDQL.readTableOrSubquery(Unknown Source) 
    at org.hsqldb.ParserDQL.XreadTableReference(Unknown Source) 
    at org.hsqldb.ParserDQL.XreadFromClause(Unknown Source) 
    at org.hsqldb.ParserDQL.XreadTableExpression(Unknown Source) 
    at org.hsqldb.ParserDQL.XreadQuerySpecification(Unknown Source) 
    at org.hsqldb.ParserDQL.XreadSimpleTable(Unknown Source) 
    at org.hsqldb.ParserDQL.XreadQueryPrimary(Unknown Source) 
    at org.hsqldb.ParserDQL.XreadQueryTerm(Unknown Source) 
    at org.hsqldb.ParserDQL.XreadQueryExpressionBody(Unknown Source) 
    at org.hsqldb.ParserDQL.XreadQueryExpression(Unknown Source) 
    at org.hsqldb.ParserDQL.compileCursorSpecification(Unknown Source) 
    at org.hsqldb.ParserCommand.compilePart(Unknown Source) 
    at org.hsqldb.ParserCommand.compileStatements(Unknown Source) 
    at org.hsqldb.Session.executeDirectStatement(Unknown Source) 
    at org.hsqldb.Session.execute(Unknown Source) 
    ... 5 more 

我將不勝感激，如果你知道任何解決方案

Answer 1

目前（截至3.0.6版本），UCanAccess不支持語法

SELECT * FROM TableName IN 'C:\Path\To\DbFile.mdb' 

如果您嘗試使用DBb.mdb的開UCanAccess控制檯（console.bat或console.sh），你會看到

Error occured at the first loading attempt of QueryLinKTable 
Converted view was :CREATE VIEW QUERYLINKTABLE AS SELECT * 
FROM TableOfDBa IN 'C:\Users\Public\test\DBa.mdb' 
Error message was :unexpected token: IN : line: 2 

在你的情況，你需要創建一個實際的鏈接表在DBb.mdb名爲[TableOfDBa]這點在DBa.mdb表，然後在DBb.mdb視圖（保存查詢）更改爲

SELECT * FROM TableOfDBa