lightdb for postgresql数据类型与jdbc、java类型对应

1 REF_CURSOR doesn’t appear in the jdbc appendices, but is mentioned in section “13.3.3.4 REF Cursor Support” of the specification, and may map to Types.REF_CURSOR. 

2 _abc stands for one of many ARRAY data types available in PostgreSQL (_record to _yes_or_no).

pg数组对应对应java类型为：java.sql.Array。如下：

try {
 
 String[] usa = {"New York", "Chicago", "San Francisco"};
 String[] canada = {"Montreal", "Toronto", "Vancouver"};
 String[] uk = {"London", "Birmingham", "Oxford"};

 /*
 Convert String[] to java.sql.Array using JDBC API
 */
 Array arrayUSA = conn.createArrayOf("text", usa);
 Array arrayCanada = conn.createArrayOf("text", canada);
 Array arrayUK = conn.createArrayOf("text", uk);
 String sql = "INSERT INTO city_example VALUES (?, ?)";
 PreparedStatement pstmt = conn.prepareStatement(sql);
 
 pstmt.setString(1, "USA");
 pstmt.setArray(2, arrayUSA);
 pstmt.executeUpdate();
 
 pstmt.setString(1, "Canada");
 pstmt.setArray(2, arrayCanada);
 pstmt.executeUpdate();
 pstmt.setString(1, "UK");
 pstmt.setArray(2, arrayUK);
 pstmt.executeUpdate();
 
 conn.commit();
} catch (Exception e) {
 
 System.out.println(e.getMessage());
 e.printStackTrace();
}

​​https://www.iteye.com/problems/90761​​测试的几种方式都没通过。

c和sql类型的对应关系

Table 37.2. Equivalent C Types for Built-in SQL Types