Get table information from DatabaseMetaData : DatabaseMetadata « Database

Get table information from DatabaseMetaData : DatabaseMetadata « Database « Java Tutorial

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Java Tutorial » Database » DatabaseMetadata

20. 30. 12. Get table information from DatabaseMetaData


import java.sql.Connection;

import java.sql.DatabaseMetaData;

import java.sql.DriverManager;

import java.sql.ResultSet;

import java.sql.ResultSetMetaData;



public class Main {

  public static void main(String[] args) throws Exception {

    Connection conn = getConnection();



    DatabaseMetaData mtdt = conn.getMetaData();



    ResultSet rs = mtdt.getTables(conn.getCatalog(), "%", "%", null);

    

    ResultSetMetaData rsmd = rs.getMetaData();

    int numCols = rsmd.getColumnCount();

    for (int i = 1; i <= numCols; i++) {

      if (i > 1)

        System.out.print(", ");

      System.out.print(rsmd.getColumnLabel(i));

    }

    System.out.println("");

    while (rs.next()) {

      for (int i = 1; i <= numCols; i++) {

        if (i > 1)

          System.out.print(", ");

        System.out.print(rs.getString(i));

      }

      System.out.println("");

    }

    conn.close();

  }



  private static Connection getConnection() throws Exception {

    Class.forName("org.hsqldb.jdbcDriver");

    String url = "jdbc:hsqldb:mem:data/tutorial";



    return DriverManager.getConnection(url, "sa", "");

  }

}

TABLE_CAT, TABLE_SCHEM, TABLE_NAME, TABLE_TYPE, REMARKS, TYPE_CAT, TYPE_SCHEM, TYPE_NAME, SELF_REFERENCING_COL_NAME, REF_GENERATION, HSQLDB_TYPE, READ_ONLY
null, INFORMATION_SCHEMA, SYSTEM_ALIASES, SYSTEM TABLE, the aliases defined within this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_ALLTYPEINFO, SYSTEM TABLE, a description of all non user-defined data types known to this database and the level of support for them in various capacities, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_AUTHORIZATIONS, SYSTEM TABLE, one row for each user and one row for each role , null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_BESTROWIDENTIFIER, SYSTEM TABLE, for each accessible table defined within this database, the optimal set of visible columns that uniquely identifies a row, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_CACHEINFO, SYSTEM TABLE, the current state of the system row caching mechanism, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_CATALOGS, SYSTEM TABLE, the accessible catalogs defined within this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_CHECK_COLUMN_USAGE, SYSTEM TABLE, one row for each column identified by a  contained in the  of a check constraint, domain constraint, or assertion., null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_CHECK_CONSTRAINTS, SYSTEM TABLE, one row for each domain constraint, table check constraint, and assertion., null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_CHECK_ROUTINE_USAGE, SYSTEM TABLE, one row for each SQL-invoked routine identified as the subject routine of either a , a , a  , or a   contained in an , a , or a ., null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_CHECK_TABLE_USAGE, SYSTEM TABLE, one row for each table identified by a 
 simply contained in a 
 contained in the  of a check constraint, domain constraint, or assertion., null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_CLASSPRIVILEGES, SYSTEM TABLE, the visible user level access permissions for each Java class providing implementation for each accessible callable procedure, SQL function, trigger body and UDT method defined within this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_COLLATIONS, SYSTEM TABLE, one row for each character collation descriptor., null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_COLUMNPRIVILEGES, SYSTEM TABLE, the visible user level access permissions of each visible column of each accessible table defined within this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_COLUMNS, SYSTEM TABLE, the visible columns of each accessible table defined within this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_CROSSREFERENCE, SYSTEM TABLE, a description of how the accessible tables defined within this database import visible columns to enforce referential integrity, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_INDEXINFO, SYSTEM TABLE, information about the indicies of each accessible table defined within this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_PRIMARYKEYS, SYSTEM TABLE, the visible columns of the primary key of each accessible table defined within this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_PROCEDURECOLUMNS, SYSTEM TABLE, a description of the return type, parameters and result columns of each accessible callable procedure, SQL function, trigger body and UDT method defined within this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_PROCEDURES, SYSTEM TABLE, the procedures, SQL functions, trigger body routines and UDT methods defined within the database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_PROPERTIES, SYSTEM TABLE, the static and dynamic system properties and operating parameters of this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_ROLE_AUTHORIZATION_DESCRIPTORS, SYSTEM TABLE, one row for each role granted directly to a grantee, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_SCHEMAS, SYSTEM TABLE, the accessible schemas defined within this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_SCHEMATA, SYSTEM TABLE, one row for each schema., null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_SEQUENCES, SYSTEM TABLE, one row for each external sequence generator, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_SESSIONINFO, SYSTEM TABLE, information about the current database session, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_SESSIONS, SYSTEM TABLE, the visible sessions open in this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_SUPERTABLES, SYSTEM TABLE, the table hierarchies defined in this database. Only the immediate super type/sub type relationship is modeled, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_SUPERTYPES, SYSTEM TABLE, the user-defined type (UDT) hierarchies defined in this database. Only the immediate super type/sub type relationship is modeled, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_TABLEPRIVILEGES, SYSTEM TABLE, the visible user level access permissions for each accessible table defined within this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_TABLES, SYSTEM TABLE, the accessible tables defined within this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_TABLETYPES, SYSTEM TABLE, the types of tables that can be created/found within this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_TABLE_CONSTRAINTS, SYSTEM TABLE, one row for each table constraint associated with a table, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_TEXTTABLES, SYSTEM TABLE, the data source descriptors of the accessible TEXT TABLE objects defined within this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_TRIGGERCOLUMNS, SYSTEM TABLE, the column usage of visible triggers defined within this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_TRIGGERS, SYSTEM TABLE, the visible triggers defined within this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_TYPEINFO, SYSTEM TABLE, a description of predefined table column data types known to this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_UDTATTRIBUTES, SYSTEM TABLE, a description of the attributes of the user-defined types (UDTs) that are available in this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_UDTS, SYSTEM TABLE, the user-defined types that are available within this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_USAGE_PRIVILEGES, SYSTEM TABLE, one row for each usage privilege descriptor., null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_USERS, SYSTEM TABLE, users defined within this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_VERSIONCOLUMNS, SYSTEM TABLE, the visible columns of the accessible tables that are automatically updated when any value in a row is updated, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_VIEWS, SYSTEM TABLE, the view descriptors of the accessible views defined within this database, null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_VIEW_COLUMN_USAGE, SYSTEM TABLE, one row for each column of a table that is explicitly or implicitly referenced in the  of the view being described., null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_VIEW_ROUTINE_USAGE, SYSTEM TABLE, one row for each SQL-invoked routine identified as the subject routine of either a , a , a , or a  contained in a , null, null, null, null, null, MEMORY, true
null, INFORMATION_SCHEMA, SYSTEM_VIEW_TABLE_USAGE, SYSTEM TABLE, one row for each table identified by a 
 simply contained in a 
 that is contained in the  of a view, null, null, null, null, null, MEMORY, true

20. 30. DatabaseMetadata
20. 30. 1.  Database Metadata 
20. 30. 2.  Get Table Names from a Database 
20. 30. 3.  Get View Names from a Database 
20. 30. 4.  Get Table and View Names from a Database 
20. 30. 5.  DatabaseMetaData Methods for Database Information 
20. 30. 6.  Get Database information from DatabaseMetaData 
20. 30. 7.  DatabaseMetaData Methods for Information on the Database's Supported Features 
20. 30. 8.  DatabaseMetaData Methods for Information on the Database's Limitations 
20. 30. 9.  Display Database Limitation for your connection 
20. 30. 10.  DatabaseMetaData Methods for Information on the Database's Contents 
20. 30. 11.  Display Database contents for current connection 
20. 30. 12.  Get table information from DatabaseMetaData 
20. 30. 13.  Get procedure information from DatabaseMetaData 
20. 30. 14.  Listing All Non-SQL92 Keywords Used by a Database 
20. 30. 15.  Listing the String Functions Supported by a Database: retrieves a list of string functions that a database supports. 
20. 30. 16.  Listing the Numeric Functions Supported by a Database 
20. 30. 17.  Listing the System Functions Supported by a Database 
20. 30. 18.  Listing the Time and Date Functions Supported by a Database 
20. 30. 19.  Getting the Maximum Table Name Length allowed in a Database 
20. 30. 20.  Listing Available SQL data Types Used by a Database 
20. 30. 21.  Get system functions supported by database 
20. 30. 22.  Get the max concurrent connection to a database 
20. 30. 23.  Get database maximum table name length 
20. 30. 24.  Get numeric functions supported by database 
20. 30. 25.  If database support batch update 
20. 30. 26.  Get data types supported by database 
20. 30. 27.  Get date time functions supported by database 
20. 30. 28.  Detect if a table exists 
20. 30. 29.  Get string functions supported by database

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