Sql 使用总结

有则更新,无则插入

需求:批量设置数据时,数据库中有数据则进行更新操作、没有则进行插入操作。

实现:MERGE INTO 语法

使用示例:

MERGE INTO TABLENAME1 T1 USING(SELECT * FROM DUAL) T2 ON (T1.F_DWBH = ? AND T1.F_DATE = ?) 
WHEN MATCHED THEN UPDATE SET T1.F_COLUMN1 = ?,T1.F_COLUMN2=? 
  WHEN NOT MATCHED THEN INSERT (F_COLUMN1, F_COLUMN2, F_COLUMN3, F_COLUMN4, F_COLUMN5) 
  VALUES (?,?,?,?,?));

行转列后、动态组织显示列

需求:查询展示中动态组织显示某些列。

实现:通过一个或者两个临时表进行数据组织展示。
本例实现思路:

/**
 * 根据统计分类"银行"统计每个单位在每个银行账户的数量。
 * 查询视图结果:单位编号、单位名称、合计、各银行列...
 * 1、统计每个单位账户得银行列动态创建临时表。
 * <p>
 * 2、根据单位编号和银行编号更新合计和银行下的账户数量
 * 2-1、查询每个单位在每个银行的账户数量。
 * 2-2、查询每个单位银行账户数量的合计。
 * <p>
 * 3、更新临时表每个单位账户的合计,每个单位各个银行下的账户数量。
 * 3-1、根据 2-1 统计的每个银行的账户数量更新临时表。
 * 3-2、根据 2-2 统计的每个银行的账户数量更新临时表。
 *
 * @return
 */

效果展示:

查询结果银行列动态显示
查询结果银行列动态显示

查询结果币种列动态显示
查询结果币种列动态显示



/**
 * 外币账户数量统计查询
 * @author pengguozhen
 */
public class ZJAccountTJViewQuery extends CommonDBObject {

    private String msTableName = "";
    private JConnection conn = null;
    private JParamObject PO = null;

    private String[] mViewID = null;

    /*统计分类:YH:银行;BZ:币种;GJ:国家;QY:区域;*/
    private static String TJFL_YH = "YH";
    private static String TJFL_BZ = "BZ";
    private static String TJFL_GJ = "GJ";
    private static String TJFL_QY = "QY";
    String dwbh = "";
    String vsTjfl = "", caption = "";

    LinkedHashMap<String, String> dynamicsCol = new LinkedHashMap<String, String>();//动态列
    Statement stmt = null;
    ResultSet rs = null;

    public JResponseObject QueryObject(JParamObject PO, JQueryStubObject QO, JConnection conn) throws Exception {
        JResponseObject RO = null;
        this.conn = conn;
        this.PO = PO;

        /*根据统计分类创建不同的临时表(动态创建列)*/

        dwbh = PO.GetValueByParamName("DWBH", "");
        vsTjfl = PO.GetValueByParamName("TJFL", "");
        if (vsTjfl.equals(TJFL_BZ)) {
            getBZColInfo();
            caption = "币种名称";
        } else if (vsTjfl.equals(TJFL_GJ)) {
            getGJColInfo();
            caption = "国家名称";
        } else if (vsTjfl.equals(TJFL_QY)) {
            getQYColInfo();
            caption = "区域名称";
        } else {//统计分类:银行
            getYHColInfo();
            caption = "银行名称";
        }


        /**
         * 返回查询结果:
         * 1、组织查询格式。
         * 2、获取查询数据
         */
        TableManager tm = queryFormatObject();//1、组织查询格式。
        stmt = conn.createStatement();
        String data = getData(stmt, conn);//2、获取查询数据
        String[] formatData = new String[2];
        formatData[0] = tm.printDOMTree(); //格式串
        formatData[1] = data; // 数据串
        RO = new JResponseObject(formatData, 0, null);
        TempTableManager.dropTable(conn, PO, msTableName);
        return RO;
    }

    /**
     * 根据统计分类"区域"进行分类时,获取区域名称的动态展示列信息。
     */
    private void getQYColInfo() {
        String vsSql = "SELECT MAX(ZJZHAREA.F_BH) AS F_BH,MAX(ZJZHAREA.F_MC) AS F_MC FROM ZJWBZHXX,ZJWHYHZD,ZJZHAREA  " +
                "WHERE ZJWBZHXX.F_YHBH=ZJWHYHZD.F_YHBH "
                + " AND ZJWHYHZD.F_DQBH=ZJZHAREA.F_BH"
                + " AND F_SQDWBH LIKE '" + dwbh + "%' GROUP BY ZJWHYHZD.F_GJBH";
        stmt = conn.createStatement();
        try {
            rs = stmt.executeQuery(vsSql);
            while (rs.next()) {
                dynamicsCol.put(rs.getString("F_BH"), rs.getString("F_MC"));
            }
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            JConnection.BackStatement(stmt, rs);
        }
    }

    /**
     * 根据统计分类"国家"进行分类时,获取国家名称的动态展示列信息。
     */
    private void getGJColInfo() {
        String vsSql = "SELECT MAX(ZJCOUNTRY.F_BH) AS F_BH,MAX(ZJCOUNTRY.F_MC) AS F_MC FROM ZJWBZHXX,ZJWHYHZD,ZJCOUNTRY  " +
                "WHERE ZJWBZHXX.F_YHBH=ZJWHYHZD.F_YHBH "
                + " AND ZJWHYHZD.F_GJBH=ZJCOUNTRY.F_BH"
                + " AND F_SQDWBH LIKE '" + dwbh + "%' GROUP BY ZJCOUNTRY.F_BH";
        stmt = conn.createStatement();
        try {
            rs = stmt.executeQuery(vsSql);
            while (rs.next()) {
                dynamicsCol.put(rs.getString("F_BH"), rs.getString("F_MC"));
            }
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            JConnection.BackStatement(stmt, rs);
        }
    }


    /**
     * 根据统计分类"币种"进行分类时,获取币种名称的动态展示列信息。
     */
    private void getBZColInfo() {
        String vsSql = "SELECT MAX(ZJBZZD.F_WBBH) AS F_BZBH,MAX(ZJBZZD.F_WBMC) AS F_BZMC FROM ZJWBZHXX,ZJBZZD  " +
                "WHERE ZJWBZHXX.F_BZBH=ZJBZZD.F_WBBH " +
                "AND F_SQDWBH LIKE '" + dwbh + "%' GROUP BY ZJWBZHXX.F_BZBH,ZJBZZD.F_WBMC";
        stmt = conn.createStatement();
        try {
            rs = stmt.executeQuery(vsSql);
            while (rs.next()) {
                dynamicsCol.put(rs.getString("F_BZBH"), rs.getString("F_BZMC"));
            }
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            JConnection.BackStatement(stmt, rs);
        }
    }

    /**
     * 根据统计分类"银行"进行分类时,获取银行名称的动态展示列信息。
     */
    private void getYHColInfo() {
        String vsSql = "SELECT MAX(ZJWHYHZD.F_YHBH) AS F_YHBH,MAX(ZJWHYHZD.F_YHMC) AS F_YHMC FROM ZJWBZHXX,ZJWHYHZD  " +
                "WHERE ZJWBZHXX.F_YHBH=ZJWHYHZD.F_YHBH " +
                "AND F_SQDWBH LIKE '" + dwbh + "%' GROUP BY ZJWBZHXX.F_YHBH,ZJWHYHZD.F_YHMC";
        stmt = conn.createStatement();
        try {
            rs = stmt.executeQuery(vsSql);
            while (rs.next()) {
                dynamicsCol.put(rs.getString("F_YHBH"), rs.getString("F_YHMC"));
            }
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            JConnection.BackStatement(stmt, rs);
        }
    }

    private String getData(Statement stmt, JConnection conn) throws Exception {
        /*创建临时表*/
        msTableName = createTmpTable();
        StringBuffer sbSql = new StringBuffer();

        /**
         *根据统计分类参数执行不同的查询 sql,获取不同的结果集插入临时表:
         * 银行:根据外币账户表 ZJWBZHXX 所属总行分组查询。
         * 币种:根据外币账户币种分组查询 ZJWBZHXX。
         * 国家:根据外币账户开户行国家分组查询,需关联金融机构字典。ZJWBZHXX.F_YHBH=ZJWHYHZD.F_YHBH  ZJWHYHZD.F_GJBH 分组
         * 区域:根据开户行国家分组查询,关联区域中心选用表 ZJAREA_RLGL。
         */
        if (vsTjfl.equals(TJFL_BZ)) {
            sbSql = getDataByBZ();
        } else if (vsTjfl.equals(TJFL_GJ)) {
            sbSql = getDataByGJ();
        } else if (vsTjfl.equals(TJFL_QY)) {
            sbSql=getDataByQY();
        } else {//统计分类:银行
            sbSql = getDataByYH();
        }

        /*查询临时表结果集,展示数据*/
        rs = stmt.executeQuery(sbSql.toString());
        String[] data = new String[3 + dynamicsCol.size()];
        data[0] = "F_DWBH";
        data[1] = "F_DWMC";
        data[2] = "F_HJ";
        int indexData = 3;
        for (String key : dynamicsCol.keySet()) {
            data[indexData] = "F_" + key;
            indexData++;
        }

        FormatDataManager formatDataManager = new FormatDataManager();
        /*m_flStru:列表数据根据单位进行分级展示,若不分级,传参空串 */
        String m_flStru = PO.GetValueByEnvName("ZJ_XJDWSTRU", "2444");
        formatDataManager.formatData(PO, false, m_flStru, mViewID, data, rs);
        return formatDataManager.getFormatedDate();
    }




    /**
     * 1、组织查询格式:两种方式
     * 第一种方式:直接xml组织好格式模板
     * 第二种方式:代码组织想要的格式
     *
     * @return
     * @throws Exception
     */
    private TableManager queryFormatObject() throws Exception {


        /*第一种方式:直接xml组织好格式模板*/
        TableManager tm = new TableManager();
        String xmlFileName = "/ZJAccountTJViewFormat.xml";
        tm = CommonDBObject.createTableManagerTemplate(xmlFileName, PO);


        /*内容定义*/
        XmlColumn xmlColumn = null;// 实际列
        XmlViewCol xmlViewCol = null;//视图列
        mViewID = new String[3 + dynamicsCol.size()];
        mViewID[0] = "c0";
        mViewID[1] = "c1";
        mViewID[2] = "c2";

        /*动态创建表格的  Column、Group(Item)*/
        XmlItem xmlitem;
        XmlGroup group;

        String[] lmclist = new String[dynamicsCol.size()];//列名称数组
        String[] lbhlist = new String[dynamicsCol.size()];//列编号数组
        int lmclistIndex = 0;
        for (String key : dynamicsCol.keySet()) {
            /*取 dynamicsCol 中的  value 作为列名称*/
            lmclist[lmclistIndex] = dynamicsCol.get(key);
            /*取 dynamicsCol 中的 key 作为列编号*/
            lbhlist[lmclistIndex] = key;
            lmclistIndex++;
        }

        int id = 2;
        Vector vec;
        for (int j = 0; j < 1; j++) {//外层循环控制动态新增的 Group,此处只显示一个 Group
            vec = new Vector();
            for (int m = 0; m < lmclist.length; m++) {//内层循环控制新增 Group 内的 Item
                /*设置列信息*/
                id++;
                mViewID[id] = "c" + id;
                xmlColumn = new XmlColumn();
                xmlColumn.setId("c" + id);// xml 格式中 col 标签的 id 属性
                xmlColumn.setAlign("right");
                xmlColumn.setCaption(lmclist[m]);
                xmlColumn.setDatatype("C");
                xmlColumn.setFontname("宋体");
                xmlColumn.setFontsize("12");
                xmlColumn.setName("F_" + lbhlist[m]);//xml 格式中 col 标签的  name 属性
                xmlColumn.setNo("" + (j + 2));
                xmlColumn.setViewctrl("ctrl");
                xmlColumn.setEditctrl("Combox");
                xmlColumn.setLock("1");
                xmlColumn.setChange("0");
                xmlColumn.setFontstyle("");
                xmlColumn.setWidth("80");

                /*将 xml  的 Column 添加到表格管理器*/
                tm.addColumn(xmlColumn);

                /*创建 Group 的 item*/
                xmlitem = new XmlItem();
                xmlitem.setId("c" + id);
                xmlitem.setName("c" + id);
                xmlitem.setType("col");

                vec.add(xmlitem);//Group 的 item 放入集合
            }

            /*创建 Group 并将 item 集合添加到 Group */
            group = new XmlGroup();
            group.setId("g" + j);
            group.setCaption(caption);//动态显示。币种、国家、区域、银行名称、
            group.setFontname("宋体");
            group.setFontsize("12");
            group.setFontstyle("");
            group.setName("g" + j);
            group.setNo("1");
            group.setItems(vec);

            /*将 Group 添加到表格管理器*/
            tm.addGroup(group);

            /* 将 group 添加到 xml 视图*/
            xmlViewCol = new XmlViewCol();
            xmlViewCol.setId("g" + j);
            xmlViewCol.setType("group");
            tm.addViewCol(xmlViewCol);

        }

        System.out.print(tm.printDOMTree());

        return tm;
    }


    /**
     * 创建临时表
     *
     * @return
     * @throws Exception
     */
    public String createTmpTable() throws Exception {


        msTableName = "#YHZHSLTJCX" + StringFunction.getTempStr(6);
        String sql = "(F_DWBH  varchar(100)                 null,"
                + " F_DWMC    varchar(200)                  null," +
                " F_HJ     varchar(100)      null,";

        /*列动态增加:dynamicsCol  的 key 作为临时表的列名。 */
        for (String key : dynamicsCol.keySet()) {
            sql += " F_" + key + "   varchar(8)           null,";
        }

        sql = sql.substring(0, sql.length() - 1);
        sql += ")";
        System.out.println("--------------1" + msTableName);
        msTableName = TempTableManager.createTmpTable(conn, PO, msTableName,
                sql, "", "");
        System.out.println("--------------2" + msTableName);
        return msTableName;
    }


    /*****************************************************以下方法根据不同得统计分类,组织不同得数据返回前台**************************************************************/

    /**
     * 根据统计分类"区域"统计每个单位在每个区域上账户的数量。
     *
     * @return
     */
    private StringBuffer getDataByQY() {
        StringBuffer sb = new StringBuffer();
        if (this.conn.getAutoCommit()) {
            this.conn.setAutoCommit(false);
        }

        /*更新临时表单位、单位名称字段*/
        updateTempTableDwInfo();

        /*2、根据单位编号更新合计和区域列下的账户数量*/
        String tempTable = "tempTable" + StringFunction.getTempStr(6);
        try {
            stmt = this.conn.createStatement();

            /*更新合计*/
            String vsSql = "CREATE TABLE " + tempTable + " AS " +
                    "SELECT ZH.F_SQDWBH F_DWBH,MAX(ZH.F_SQDWMC) F_DWMC,ZJZHAREA.F_BH AS F_BH,MAX(ZJZHAREA.F_MC) F_MC," +
                    "COUNT(ZH.F_ZH) F_ZHCOUNT  " +
                    "FROM ZJWHYHZD YH,ZJWBZHXX ZH ,ZJZHAREA " +
                    "WHERE YH.F_YHBH = ZH.F_YHBH  " +
                    "AND YH.F_DQBH=ZJZHAREA.F_BH " +
                    "AND ZH.F_SQDWBH LIKE '" + dwbh + "%' " +
                    "GROUP BY ZH.F_SQDWBH,YH.F_DQBH ORDER BY F_SQDWBH";

            stmt.execute(vsSql);

            vsSql = "UPDATE " + msTableName + " A  SET A.F_HJ=(SELECT SUM(F_ZHCOUNT) FROM " + tempTable + " B WHERE A" +
                    ".F_DWBH=B.F_DWBH " +
                    " group by F_DWBH )  " +
                    " where exists  ( select 1 from " + tempTable + " B where A.F_DWBH=B.F_DWBH ) ";

            stmt.executeUpdate(vsSql);

            /*更新国家列账户数量*/
            stmt = this.conn.createStatement();

            for (String key : dynamicsCol.keySet()) {
                vsSql = "UPDATE " + msTableName + " A  SET  A.F_" + key + "=(select F_ZHCOUNT FROM " + tempTable + " " +
                        "B where A.F_DWBH=B.F_DWBH AND B.F_BH='" + key + "' ) " +
                        " WHERE  exists  ( select 1 from " + tempTable + " B where A.F_DWBH=B.F_DWBH AND B.F_BH='" + key + "')";
                stmt.executeUpdate(vsSql);

            }

            vsSql = "DROP TABLE " + tempTable + "";
            stmt.execute(vsSql);

            this.conn.commit();
            this.conn.setAutoCommit(true);

        } catch (SQLException e) {
            e.printStackTrace();
            conn.rollback();
        } finally {
            JConnection.BackStatement(stmt, rs);
        }

        /*该处查询临时表结果集时需要罗列出所有列,否则有可能导致某些列的数据不显示*/
        sb.append("SELECT F_DWBH,F_DWMC,F_HJ  ");
        String s = "";
        for (String key : dynamicsCol.keySet()) {
            s += " F_" + key + ",";
        }
        if (s.equals("")) {
            sb.append(" FROM " + msTableName + " ORDER BY F_DWBH");
        } else {
            s = s.substring(0, s.length() - 1);
            sb.append("," + s);
            sb.append(" FROM " + msTableName + " ORDER BY F_DWBH");
        }

        return sb;
    }

    /**
     * 根据统计分类"国家"统计每个单位在每个国家上账户的数量。
     *
     * @return
     */
    private StringBuffer getDataByGJ() {
        StringBuffer sb = new StringBuffer();
        if (this.conn.getAutoCommit()) {
            this.conn.setAutoCommit(false);
        }

        /*更新临时表单位、单位名称字段*/
        updateTempTableDwInfo();

        /*2、根据单位编号更新合计和国家列下的账户数量*/
        String tempTable = "tempTable" + StringFunction.getTempStr(6);
        try {
            stmt = this.conn.createStatement();

            /*更新合计*/
            String vsSql = "CREATE TABLE " + tempTable + " AS " +
                    "SELECT ZH.F_SQDWBH F_DWBH,MAX(ZH.F_SQDWMC) F_DWMC,ZJCOUNTRY.F_BH AS F_BH,MAX(ZJCOUNTRY.F_MC) F_MC," +
                    "COUNT(ZH.F_ZH) F_ZHCOUNT  " +
                    "FROM ZJWHYHZD YH,ZJWBZHXX ZH ,ZJCOUNTRY " +
                    "WHERE YH.F_YHBH = ZH.F_YHBH  " +
                    "AND YH.F_GJBH=ZJCOUNTRY.F_BH " +
                    "AND ZH.F_SQDWBH LIKE '" + dwbh + "%' " +
                    "GROUP BY ZH.F_SQDWBH,ZJCOUNTRY.F_BH ORDER BY F_SQDWBH";

            stmt.execute(vsSql);

            vsSql = "UPDATE " + msTableName + " A  SET A.F_HJ=(SELECT SUM(F_ZHCOUNT) FROM " + tempTable + " B WHERE A" +
                    ".F_DWBH=B.F_DWBH " +
                    " group by F_DWBH )  " +
                    " where exists  ( select 1 from " + tempTable + " B where A.F_DWBH=B.F_DWBH ) ";

            stmt.executeUpdate(vsSql);

            /*更新国家列账户数量*/
            stmt = this.conn.createStatement();

            for (String key : dynamicsCol.keySet()) {
                vsSql = "UPDATE " + msTableName + " A  SET  A.F_" + key + "=(select F_ZHCOUNT FROM " + tempTable + " " +
                        "B where A.F_DWBH=B.F_DWBH AND B.F_BH='" + key + "' ) " +
                        " WHERE  exists  ( select 1 from " + tempTable + " B where A.F_DWBH=B.F_DWBH AND B.F_BH='" + key + "')";
                stmt.executeUpdate(vsSql);

            }

            vsSql = "DROP TABLE " + tempTable + "";
            stmt.execute(vsSql);

            this.conn.commit();
            this.conn.setAutoCommit(true);

        } catch (SQLException e) {
            e.printStackTrace();
            conn.rollback();
        } finally {
            JConnection.BackStatement(stmt, rs);
        }

        /*该处查询临时表结果集时需要罗列出所有列,否则有可能导致某些列的数据不显示*/
        sb.append("SELECT F_DWBH,F_DWMC,F_HJ  ");
        String s = "";
        for (String key : dynamicsCol.keySet()) {
            s += " F_" + key + ",";
        }
        if (s.equals("")) {
            sb.append(" FROM " + msTableName + " ORDER BY F_DWBH");
        } else {
            s = s.substring(0, s.length() - 1);
            sb.append("," + s);
            sb.append(" FROM " + msTableName + " ORDER BY F_DWBH");
        }

        return sb;
    }

    /**
     * 根据统计分类"币种"统计每个单位在每个币种上账户的数量。
     *
     * @return
     */
    private StringBuffer getDataByBZ() {
        StringBuffer sb = new StringBuffer();
        if (this.conn.getAutoCommit()) {
            this.conn.setAutoCommit(false);
        }

        /*临时表已在  getData() 方法中创建*/
        /*更新临时表单位、单位名称字段*/
        updateTempTableDwInfo();

        /*2、根据单位编号更新合计和银行下的账户数量*/
        stmt = this.conn.createStatement();

        String tempTable = "tempTable" + StringFunction.getTempStr(6);
        try {

            /*更新合计*/

            String vsSql = "CREATE TABLE " + tempTable + " AS " +
                    "SELECT ZH.F_SQDWBH F_DWBH,MAX(ZH.F_SQDWMC) F_DWMC,ZH.F_BZBH AS F_BZBH,MAX(YH.F_WBMC) F_BZMC,COUNT(ZH.F_ZH) F_ZHCOUNT  " +
                    "FROM ZJBZZD YH,ZJWBZHXX ZH " +
                    "WHERE YH.F_WBBH = ZH.F_BZBH  " +
                    "AND ZH.F_SQDWBH LIKE '" + dwbh + "%' " +
                    "GROUP BY ZH.F_SQDWBH,ZH.F_BZBH ORDER BY F_SQDWBH";

            stmt.execute(vsSql);

            vsSql = "UPDATE " + msTableName + " A  SET A.F_HJ=(SELECT SUM(F_ZHCOUNT) FROM " + tempTable + " B WHERE A" +
                    ".F_DWBH=B.F_DWBH " +
                    " group by F_DWBH )  " +
                    " where exists  ( select 1 from " + tempTable + " B where A.F_DWBH=B.F_DWBH ) ";

            stmt.executeUpdate(vsSql);

            /*更新银行列账户数量*/
            stmt = this.conn.createStatement();

            for (String key : dynamicsCol.keySet()) {
                vsSql = "UPDATE " + msTableName + " A  SET  A.F_" + key + "=(select F_ZHCOUNT FROM " + tempTable + " " +
                        "B where A.F_DWBH=B.F_DWBH AND B.F_BZBH='" + key + "' ) " +
                        " WHERE  exists  ( select 1 from " + tempTable + " B where A.F_DWBH=B.F_DWBH AND B.F_BZBH='" + key + "')";
                stmt.executeUpdate(vsSql);

            }

            vsSql = "DROP TABLE " + tempTable + "";
            stmt.execute(vsSql);

            this.conn.commit();
            this.conn.setAutoCommit(true);

        } catch (SQLException e) {
            e.printStackTrace();
            conn.rollback();
        } finally {
            JConnection.BackStatement(stmt, rs);
        }


        JConnection.BackStatement(stmt, rs);

        /*该处查询临时表结果集时需要罗列出所有列,否则有可能导致某些列的数据不显示*/
        sb.append("SELECT F_DWBH,F_DWMC,F_HJ  ");
        String s = "";
        for (String key : dynamicsCol.keySet()) {
            s += " F_" + key + ",";
        }
        if (s.equals("")) {
            sb.append(" FROM " + msTableName + " ORDER BY F_DWBH");
        } else {
            s = s.substring(0, s.length() - 1);
            sb.append("," + s);
            sb.append(" FROM " + msTableName + " ORDER BY F_DWBH");
        }

        return sb;
    }


    /**
     * 根据统计分类"银行"统计每个单位在每个银行账户的数量。
     * 视图:单位编号、单位名称、合计、各银行列...
     * 1、统计每个单位账户得银行列动态创建临时表。
     * <p>
     * 2、根据单位编号和银行编号更新合计和银行下的账户数量
     * 2-1、查询每个单位在每个银行的账户数量。
     * 2-2、查询每个单位银行账户数量的合计。
     * <p>
     * 3、更新临时表每个单位账户的合计,每个单位各个银行下的账户数量。
     * 3-1、根据 2-1 统计的每个银行的账户数量更新临时表。
     * 3-2、根据 2-2 统计的每个银行的账户数量更新临时表。
     *
     * @return
     */
    private StringBuffer getDataByYH() {
        StringBuffer sb = new StringBuffer();
        if (this.conn.getAutoCommit()) {
            this.conn.setAutoCommit(false);
        }

        /*临时表已在  getData() 方法中创建*/
        /*更新临时表单位、单位名称字段*/
        updateTempTableDwInfo();

        /*2、根据单位编号更新合计和银行下的账户数量*/
        stmt = this.conn.createStatement();

        String tempTable = "tempTable" + StringFunction.getTempStr(6);
        try {

            /*更新合计*/

            String vsSql = "CREATE TABLE " + tempTable + " AS " +
                    "SELECT ZH.F_SQDWBH F_DWBH,MAX(ZH.F_SQDWMC) F_DWMC,YH.F_YHBH,MAX(YH.F_YHMC) F_YHMC,COUNT(ZH.F_ZH) F_ZHCOUNT  " +
                    "FROM ZJWHYHZD YH,ZJWBZHXX ZH " +
                    "WHERE YH.F_YHBH = ZH.F_YHBH  " +
                    "AND ZH.F_SQDWBH LIKE '" + dwbh + "%' " +
                    "GROUP BY ZH.F_SQDWBH,YH.F_YHBH ORDER BY F_SQDWBH";

            stmt.execute(vsSql);

            vsSql = "UPDATE " + msTableName + " A  SET A.F_HJ=(SELECT SUM(F_ZHCOUNT) FROM " + tempTable + " B WHERE A" +
                    ".F_DWBH=B.F_DWBH " +
                    " group by F_DWBH )  " +
                    " where exists  ( select 1 from " + tempTable + " B where A.F_DWBH=B.F_DWBH ) ";

            stmt.executeUpdate(vsSql);

            /*更新银行列账户数量*/
            stmt = this.conn.createStatement();

            for (String key : dynamicsCol.keySet()) {
                vsSql = "UPDATE " + msTableName + " A  SET  A.F_" + key + "=(select F_ZHCOUNT FROM " + tempTable + " " +
                        "B where A.F_DWBH=B.F_DWBH AND B.F_YHBH='" + key + "' ) " +
                        " WHERE  exists  ( select 1 from " + tempTable + " B where A.F_DWBH=B.F_DWBH AND B.F_YHBH='" + key + "')";
                stmt.executeUpdate(vsSql);

            }

            vsSql = "DROP TABLE " + tempTable + "";
            stmt.execute(vsSql);

            this.conn.commit();
            this.conn.setAutoCommit(true);

        } catch (SQLException e) {
            e.printStackTrace();
            conn.rollback();
        } finally {
            JConnection.BackStatement(stmt, rs);
        }


        JConnection.BackStatement(stmt, rs);

        /*该处查询临时表结果集时需要罗列出所有列,否则有可能导致某些列的数据不显示*/
        sb.append("SELECT F_DWBH,F_DWMC,F_HJ  ");
        String s = "";
        for (String key : dynamicsCol.keySet()) {
            s += " F_" + key + ",";
        }
        if (s.equals("")) {
            sb.append(" FROM " + msTableName + " ORDER BY F_DWBH");
        } else {
            s = s.substring(0, s.length() - 1);
            sb.append("," + s);
            sb.append(" FROM " + msTableName + " ORDER BY F_DWBH");
        }

        return sb;
    }

    /**
     * 此处若账户对应得银行编号在 ZJWBYHZD 无关联,该单位仍会组织进临时表,待处理。。。
     * 先以 ZJWBZHXX 表中得数据做测试,以后修改为 ZJWBZHXX 表
     */
    private void updateTempTableDwInfo() {
        stmt = this.conn.createStatement();
        String vsSql = "INSERT INTO " + msTableName + " " +
                "  (F_DWBH, F_DWMC)" +
                "  SELECT F_SQDWBH, MAX(F_SQDWMC) " +
                "    FROM ZJWBZHXX " +
                "   WHERE F_SQDWBH LIKE '" + dwbh + "%' " +
                "   GROUP BY F_SQDWBH ";
        try {
            stmt.execute(vsSql);
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            JConnection.BackStatement(stmt, rs);
        }
    }
}


原文地址:https://www.cnblogs.com/pengguozhen/p/14025188.html