Example usage for java.sql ResultSet getString

Introduction

In this page you can find the example usage for java.sql ResultSet getString.

Prototype

String getString(String columnLabel) throws SQLException;

Source Link

Document

Retrieves the value of the designated column in the current row of this ResultSet object as a String in the Java programming language.

Usage

From source file:Main.java

public static void main(String args[]) throws Exception {
    Connection con = null;//ww w .ja v  a2 s.c om
    Class.forName("oracle.jdbc.driver.OracleDriver");
    con = DriverManager.getConnection("jdbc:oracle:thin:@192.201.32.92:1521:psprd1", "username", "password");
    String query = null;
    ResultSet rset = null;
    query = "UPDATE t1 " + " SET id = ?";
    PreparedStatement stmt = con.prepareStatement(query);
    // stmt.setInt(paramIndex++, null);
    stmt.setNull(1, java.sql.Types.INTEGER);
    stmt.executeUpdate();
    stmt.close();
    query = "select id from t1 ";
    stmt = con.prepareStatement(query);
    rset = stmt.executeQuery();
    rset.next();
    System.out.println(rset.getString("id"));
    rset.close();
    stmt.close();
    con.close();
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getMySqlConnection();
    System.out.println("Got Connection.");
    Statement st = conn.createStatement();
    //    st.executeUpdate("drop table survey;");
    st.executeUpdate("create table survey (id int,name varchar(30));");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");

    ResultSet privileges = null;
    DatabaseMetaData meta = conn.getMetaData();
    // The '_' character represents any single character.
    // The '%' character represents any sequence of zero
    // or more characters.
    privileges = meta.getColumnPrivileges(conn.getCatalog(), null, "survey", "%");
    while (privileges.next()) {

        String catalog = privileges.getString("TABLE_CAT");
        String schema = privileges.getString("TABLE_SCHEM");
        String tableName = privileges.getString("TABLE_NAME");
        String dbColumn = privileges.getString("COLUMN_NAME");
        String privilege = privileges.getString("PRIVILEGE");
        String grantor = privileges.getString("GRANTOR");
        String grantee = privileges.getString("GRANTEE");
        String isGrantable = privileges.getString("IS_GRANTABLE");

        System.out.println("table name:" + tableName);
        System.out.println("catalog:" + catalog);
        System.out.println("column:" + dbColumn);
        System.out.println("schema:" + schema);
        System.out.println("privilege:" + privilege);
        System.out.println("grantor:" + grantor);
        System.out.println("isGrantable:" + isGrantable);
        System.out.println("grantee:" + grantee);
    }//from  ww w .  j a  v a2s .  com

    st.close();
    conn.close();
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement stmt = null;//w w  w. j av a2  s  .c o m
    ResultSet rs = null;
    conn = getConnection();
    stmt = conn.createStatement();
    stmt.executeUpdate("insert into animals_table (name) values('newName')");
    rs = stmt.getGeneratedKeys();
    while (rs.next()) {
        ResultSetMetaData rsMetaData = rs.getMetaData();
        int columnCount = rsMetaData.getColumnCount();

        for (int i = 1; i <= columnCount; i++) {
            String key = rs.getString(i);
            System.out.println("key " + i + " is " + key);
        }
    }
    rs.close();
    stmt.close();
    conn.close();
}

---

From source file:ex4.java

public static void main(String[] params) {
    CommandLine commandLine = null;//w w  w  .j ava  2 s  .c o m
    String sqlpath = "", host = "", port = "3306", username = "", password = "", database = "";
    Boolean query = false;
    Option option_sql = Option.builder("s").argName("sql").hasArg()
            .desc("Path to a file containing a valid MySQL sql statement").build();
    Option option_hostname = Option.builder("h").argName("host").hasArg().desc("ClearDB MySQL Hostname")
            .build();
    Option option_port = Option.builder("n").argName("port").hasArg().desc("ClearDB MySQL Port").build();
    Option option_username = Option.builder("u").argName("username").hasArg().desc("ClearDB MySQL Username")
            .build();
    Option option_password = Option.builder("p").argName("password").hasArg().desc("ClearDB MySQL Password")
            .build();
    Option option_dbname = Option.builder("d").argName("dbname").hasArg().desc("ClearDB MySQL Database Name")
            .build();
    Option option_help = Option.builder("w").argName("wanthelp").hasArg().desc("Help").build();
    Option option_query = Option.builder().longOpt("query").desc("Query type SQL Statement").build();
    Options options = new Options();
    CommandLineParser parser = new DefaultParser();

    options.addOption(option_sql);
    options.addOption(option_hostname);
    options.addOption(option_port);
    options.addOption(option_username);
    options.addOption(option_password);
    options.addOption(option_dbname);
    options.addOption(option_query);
    options.addOption(option_help);

    try {
        commandLine = parser.parse(options, params);
    } catch (MissingOptionException e) {
        help(options);
    } catch (MissingArgumentException e) {
        help(options);
    } catch (ParseException e) {
        System.out.println(e);
    }

    if (commandLine.hasOption("w") || params.length == 0) {
        help(options);
    }

    if (commandLine.hasOption("s")) {
        sqlpath = commandLine.getOptionValue("s");
    } else {
        System.out.println("Missing path to a SQL statement file");
        help(options);
    }
    if (commandLine.hasOption("h")) {
        host = commandLine.getOptionValue("h");
    } else {
        System.out.println("Missing ClearDB hostname (e.g. us-cdbr-iron-east-??.cleardb.net)");
        help(options);
    }
    if (commandLine.hasOption("n")) {
        port = commandLine.getOptionValue("n");
    } else {
        System.out.println("Missing ClearDB Port Value.  Defaulting to 3306");
    }
    if (commandLine.hasOption("u")) {
        username = commandLine.getOptionValue("u");
    } else {
        System.out.println("Missing ClearDB Username");
        help(options);
    }
    if (commandLine.hasOption("p")) {
        password = commandLine.getOptionValue("p");
    } else {
        System.out.println("Missing ClearDB Password");
        help(options);
    }
    if (commandLine.hasOption("d")) {
        database = commandLine.getOptionValue("d");
    } else {
        System.out.println("Missing ClearDB Database Name");
        help(options);
    }

    if (commandLine.hasOption("query")) {
        query = true;
    }

    String connectionURL = new StringBuilder().append("jdbc:mysql://").append(host).append(":").append(port)
            .append("/").append(database).append("?reconnect=true").toString();

    try {
        Class.forName("com.mysql.jdbc.Driver");
    } catch (ClassNotFoundException e) {
        System.out.println(e);
    }

    try {
        Connection con = DriverManager.getConnection(connectionURL, username, password);
        Statement stmt = con.createStatement();
        if (query) {
            System.out.println("Querying target MySQL DB ...");
            ResultSet rs = stmt.executeQuery(readFile(sqlpath, Charset.defaultCharset()));
            while (rs.next())
                System.out.println(rs.getInt("emp_no") + "  " + rs.getDate("birth_date") + "  "
                        + rs.getString("first_name") + "  " + rs.getString("last_name") + "  "
                        + rs.getString("gender") + "  " + rs.getDate("hire_date"));
        } else {
            System.out.println("Updating target MySQL DB ...");
            int result = stmt.executeUpdate(readFile(sqlpath, Charset.defaultCharset()));
            System.out.println(result);
        }
        con.close();
    } catch (Exception e) {
        System.out.println(e);
    }
}

---

From source file:de.tudarmstadt.ukp.csniper.resbuild.EvaluationItemFixer.java

public static void main(String[] args) {
    connect(HOST, DATABASE, USER, PASSWORD);

    Map<Integer, String> items = new HashMap<Integer, String>();
    Map<Integer, String> failed = new HashMap<Integer, String>();

    // fetch coveredTexts of dubious items and clean it
    PreparedStatement select = null;
    try {//from  w ww  .  jav a  2s . co  m
        StringBuilder selectQuery = new StringBuilder();
        selectQuery.append("SELECT * FROM EvaluationItem ");
        selectQuery.append("WHERE LOCATE(coveredText, '  ') > 0 ");
        selectQuery.append("OR LOCATE('" + LRB + "', coveredText) > 0 ");
        selectQuery.append("OR LOCATE('" + RRB + "', coveredText) > 0 ");
        selectQuery.append("OR LEFT(coveredText, 1) = ' ' ");
        selectQuery.append("OR RIGHT(coveredText, 1) = ' ' ");

        select = connection.prepareStatement(selectQuery.toString());
        log.info("Running query [" + selectQuery.toString() + "].");
        ResultSet rs = select.executeQuery();

        while (rs.next()) {
            int id = rs.getInt("id");
            String coveredText = rs.getString("coveredText");

            try {
                // special handling of double whitespace: in this case, re-fetch the text
                if (coveredText.contains("  ")) {
                    coveredText = retrieveCoveredText(rs.getString("collectionId"), rs.getString("documentId"),
                            rs.getInt("beginOffset"), rs.getInt("endOffset"));
                }

                // replace bracket placeholders and trim the text
                coveredText = StringUtils.replace(coveredText, LRB, "(");
                coveredText = StringUtils.replace(coveredText, RRB, ")");
                coveredText = coveredText.trim();

                items.put(id, coveredText);
            } catch (IllegalArgumentException e) {
                failed.put(id, e.getMessage());
            }
        }
    } catch (SQLException e) {
        log.error("Exception while selecting: " + e.getMessage());
    } finally {
        closeQuietly(select);
    }

    // write logs
    BufferedWriter bwf = null;
    BufferedWriter bws = null;
    try {
        bwf = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(new File(LOG_FAILED)), "UTF-8"));
        for (Entry<Integer, String> e : failed.entrySet()) {
            bwf.write(e.getKey() + " - " + e.getValue() + "\n");
        }

        bws = new BufferedWriter(
                new OutputStreamWriter(new FileOutputStream(new File(LOG_SUCCESSFUL)), "UTF-8"));
        for (Entry<Integer, String> e : items.entrySet()) {
            bws.write(e.getKey() + " - " + e.getValue() + "\n");
        }
    } catch (IOException e) {
        log.error("Got an IOException while writing the log files.");
    } finally {
        IOUtils.closeQuietly(bwf);
        IOUtils.closeQuietly(bws);
    }

    log.info("Texts for [" + items.size() + "] items need to be cleaned up.");

    // update the dubious items with the cleaned coveredText
    PreparedStatement update = null;
    try {
        String updateQuery = "UPDATE EvaluationItem SET coveredText = ? WHERE id = ?";

        update = connection.prepareStatement(updateQuery);
        int i = 0;
        for (Entry<Integer, String> e : items.entrySet()) {
            int id = e.getKey();
            String coveredText = e.getValue();

            // update item in database
            update.setString(1, coveredText);
            update.setInt(2, id);
            update.executeUpdate();
            log.debug("Updating " + id + " with [" + coveredText + "]");

            // show percentage of updated items
            i++;
            int part = (int) Math.ceil((double) items.size() / 100);
            if (i % part == 0) {
                log.info(i / part + "% finished (" + i + "/" + items.size() + ").");
            }
        }
    } catch (SQLException e) {
        log.error("Exception while updating: " + e.getMessage());
    } finally {
        closeQuietly(update);
    }

    closeQuietly(connection);
}

---

From source file:JDBCQuery.java

public static void main(String[] av) {
    try {/*from ww  w  . j av  a  2  s  . c o m*/
        System.out.println("Loading Driver (with Class.forName)");
        // Load the jdbc-odbc bridge driver
        Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

        // Enable logging
        // DriverManager.setLogStream(System.err);

        System.out.println("Getting Connection");
        Connection conn = DriverManager.getConnection("jdbc:odbc:Companies", "ian", ""); // user, passwd

        // Any warnings generated by the connect?
        checkForWarning(conn.getWarnings());

        System.out.println("Creating Statement");
        Statement stmt = conn.createStatement();

        System.out.println("Executing Query");
        ResultSet rs = stmt.executeQuery("SELECT * FROM Companies");

        System.out.println("Retrieving Results");
        int i = 0;
        while (rs.next()) {

            System.out.println("Retrieving Company ID");
            int x = rs.getInt("CustNO");
            System.out.println("Retrieving Name");
            String s = rs.getString("Company");

            System.out.println("ROW " + ++i + ": " + x + "; " + s + "; " + ".");

        }

        rs.close(); // All done with that resultset
        stmt.close(); // All done with that statement
        conn.close(); // All done with that DB connection

    } catch (ClassNotFoundException e) {
        System.out.println("Can't load driver " + e);
    } catch (SQLException e) {
        System.out.println("Database access failed " + e);
    }
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getMySqlConnection();
    System.out.println("Got Connection.");
    Statement st = conn.createStatement();
    st.executeUpdate("drop table survey;");
    st.executeUpdate("create table survey (id int,name varchar(30));");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");

    ResultSet rs = null;
    DatabaseMetaData meta = conn.getMetaData();
    // The Oracle database stores its table names as Upper-Case,
    // if you pass a table name in lowercase characters, it will not work.
    // MySQL database does not care if table name is uppercase/lowercase.
    ////from   w  ww. jav  a2  s.  c  om
    rs = meta.getImportedKeys(conn.getCatalog(), null, "survey");
    while (rs.next()) {
        String fkTableName = rs.getString("FKTABLE_NAME");
        String fkColumnName = rs.getString("FKCOLUMN_NAME");
        int fkSequence = rs.getInt("KEY_SEQ");
        System.out.println("getExportedKeys(): fkTableName=" + fkTableName);
        System.out.println("getExportedKeys(): fkColumnName=" + fkColumnName);
        System.out.println("getExportedKeys(): fkSequence=" + fkSequence);
    }

    st.close();
    conn.close();
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getMySqlConnection();
    System.out.println("Got Connection.");
    Statement st = conn.createStatement();
    st.executeUpdate("drop table survey;");
    st.executeUpdate("create table survey (id int,name varchar(30));");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");

    ResultSet rs = null;
    DatabaseMetaData meta = conn.getMetaData();
    // The Oracle database stores its table names as Upper-Case,
    // if you pass a table name in lowercase characters, it will not work.
    // MySQL database does not care if table name is uppercase/lowercase.
    ///* w w w .j  a  v a2s  .co  m*/
    rs = meta.getExportedKeys(conn.getCatalog(), null, "survey");
    while (rs.next()) {
        String fkTableName = rs.getString("FKTABLE_NAME");
        String fkColumnName = rs.getString("FKCOLUMN_NAME");
        int fkSequence = rs.getInt("KEY_SEQ");
        System.out.println("getExportedKeys(): fkTableName=" + fkTableName);
        System.out.println("getExportedKeys(): fkColumnName=" + fkColumnName);
        System.out.println("getExportedKeys(): fkSequence=" + fkSequence);
    }

    st.close();
    conn.close();
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getMySqlConnection();
    System.out.println("Got Connection.");
    Statement st = conn.createStatement();
    st.executeUpdate("drop table survey;");
    st.executeUpdate("create table survey (id int,name varchar(30));");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");

    ResultSet indexInformation = null;
    DatabaseMetaData meta = conn.getMetaData();

    // The '_' character represents any single character.
    // The '%' character represents any sequence of zero
    // or more characters.
    indexInformation = meta.getIndexInfo(conn.getCatalog(), null, "survey", true, true);
    while (indexInformation.next()) {
        String dbCatalog = indexInformation.getString("TABLE_CATALOG");
        String dbSchema = indexInformation.getString("TABLE_SCHEMA");
        String dbTableName = indexInformation.getString("TABLE_NAME");
        boolean dbNoneUnique = indexInformation.getBoolean("NON_UNIQUE");
        String dbIndexQualifier = indexInformation.getString("INDEX_QUALIFIER");
        String dbIndexName = indexInformation.getString("INDEX_NAME");
        short dbType = indexInformation.getShort("TYPE");
        short dbOrdinalPosition = indexInformation.getShort("ORDINAL_POSITION");
        String dbColumnName = indexInformation.getString("COLUMN_NAME");
        String dbAscOrDesc = indexInformation.getString("ASC_OR_DESC");
        int dbCardinality = indexInformation.getInt("CARDINALITY");
        int dbPages = indexInformation.getInt("PAGES");
        String dbFilterCondition = indexInformation.getString("FILTER_CONDITION");

        System.out.println("index name=" + dbIndexName);
        System.out.println("table=" + dbTableName);
        System.out.println("column=" + dbColumnName);
        System.out.println("catalog=" + dbCatalog);
        System.out.println("schema=" + dbSchema);
        System.out.println("nonUnique=" + dbNoneUnique);
        System.out.println("indexQualifier=" + dbIndexQualifier);
        System.out.println("type=" + dbType);
        System.out.println("ordinalPosition=" + dbOrdinalPosition);
        System.out.println("ascendingOrDescending=" + dbAscOrDesc);
        System.out.println("cardinality=" + dbCardinality);
        System.out.println("pages=" + dbPages);
        System.out.println("filterCondition=" + dbFilterCondition);
    }/*from   ww w.j  a  va 2  s. c  o m*/

    st.close();
    conn.close();
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getHSQLConnection();
    System.out.println("Got Connection.");
    Statement st = conn.createStatement();
    st.executeUpdate("create table survey (id int,name varchar, PRIMARY KEY (id) );");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");

    ResultSet rs = null;
    DatabaseMetaData meta = conn.getMetaData();
    // The Oracle database stores its table names as Upper-Case,
    // if you pass a table name in lowercase characters, it will not work.
    // MySQL database does not care if table name is uppercase/lowercase.
    ////  ww  w. j  av  a2  s. c  om
    rs = meta.getPrimaryKeys(null, null, "survey");

    java.util.List list = new java.util.ArrayList();
    while (rs.next()) {
        String columnName = rs.getString("COLUMN_NAME");
        System.out.println("getPrimaryKeys(): columnName=" + columnName);
    }

    st.close();
    conn.close();
}

---

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