SQL Anywhere5.5: Metadata

/*
C – computed column
D – default
F – SQLJ function
L – log
N – partition condition
P – Transact-SQL or SQLJ procedure
PR – prepare objects (created by Dynamic SQL)
R – rule
RI – referential constraint
S – system table
TR – trigger
U – user table
V – view
XP – extended stored procedure
*/

SELECT * FROM sys.systable

SELECT * FROM sysobjects WHERE type = 'U'
select * from customer   --- 查-詢錶
go

SELECT * FROM syscolumns
GO
SELECT * FROM sysobjects
GO


SELECT sys.sysuserperm.user_name
          + '.' 
          + sys.systable.table_name
          + '.' 
          + sys.syscolumn.column_name
   FROM sys.systable,
        sys.syscolumn,
        sys.sysuserperm
  WHERE sys.systable.table_id = sys.syscolumn.table_id
    AND sys.systable.creator = sys.sysuserperm.user_id
    AND sys.sysuserperm.user_name NOT IN ( 'SYS', 'dbo' ) 
    AND sys.systable.table_name NOT LIKE 'pbcat%'
  ORDER BY sys.sysuserperm.user_name,
        sys.systable.table_name,
        sys.syscolumn.column_id
GO

SELECT b.name + '.' + a.name
  FROM sysobjects a, sysusers b
 WHERE a.type IN ('U', 'S')
   AND a.uid = b.uid
 ORDER BY b.name, a.name

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Data.Odbc;
using System.Data.SqlClient;


namespace SQLanyWhereDemo
{

    /// <summary>
    /// http://dcx.sybase.com/1101/en/dbprogramming_en11/ianywhere-data-sqlanywhere-saconnection-getschem6330755502-0.html
    /// </summary>
    public partial class Form3 : Form
    {

        string connectionString = @"DSN=geovindu;UID=dba;PWD=sql;";
        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
        DataTable setDatat()
        {
            DataTable dt = new DataTable();
            dt.Columns.Add("id", typeof(int));
            dt.Columns.Add("name", typeof(string));
            dt.Rows.Add(1, "Procedures");
            dt.Rows.Add(2, "DataTypes");
            dt.Rows.Add(3, "Foreign Keys");
            dt.Rows.Add(4, "Databases");
            dt.Rows.Add(5, "DBA");
            dt.Rows.Add(6, "Arguments");
            dt.Rows.Add(7, "Collection Name");
            dt.Rows.Add(8, "DatasourceInformation");
            dt.Rows.Add(9, "MetaDataCollections");
            dt.Rows.Add(10, "ForeignKeyColumns");
            dt.Rows.Add(11, "Functions");
            dt.Rows.Add(12, "IndexColumns");
            dt.Rows.Add(13, "Indexes");
            dt.Rows.Add(14, "PrimaryKeys");
            dt.Rows.Add(15, "ReservedWords");
            dt.Rows.Add(16, "Restrictions");
            dt.Rows.Add(17, "Triggers");
            dt.Rows.Add(18, "UDFs");
            dt.Rows.Add(19, "UniqueKeys");
            dt.Rows.Add(20, "UserPrivileges");
            dt.Rows.Add(21, "Users");
            dt.Rows.Add(22, "ViewColumns");

            //DataTable dt = connection.GetSchema("Tables", strRestricted);
            dt.Rows.Add(23, "Tables");
            dt.Rows.Add(24, "Columns");//表的列的详细，有主键TABLE_CATALOG,TABLE_SCHEMA,TABLE_NAME,COLUMN_NAME,ORDINAL_POSITION,COLUMN_DEFAULT,IS_NULLABLE,DATA_TYPE,CHARACTER_MAXIMUM_LENGTH,NUMERIC_PRECISION,NUMERIC_SCALE,DATETIME_PRECISION,CHARACTER_SET_NAME,COLLATION_NAME,COLUMN_TYPE,COLUMN_KEY,EXTRA,PRIVILEGES,COLUMN_COMMENT
            dt.Rows.Add(25, "Views");
            dt.Rows.Add(26, "Indexes");//表的列
            dt.Rows.Add(27, "IndexColumns");//主键

            return dt;
        }

        /// <summary>
        /// 
        /// </summary>
        public Form3()
        {
            InitializeComponent();
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Form3_Load(object sender, EventArgs e)
        {
            this.txtConnection.Text = connectionString;
            this.comboBox1.DataSource = setDatat();
            this.comboBox1.DisplayMember = "name";
            this.comboBox1.ValueMember = "id";
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                using (OdbcConnection connection = new OdbcConnection(connectionString))
                {
                    connection.Open();
                    DataTable dt = connection.GetSchema(this.comboBox1.Text.Trim());
                    this.dataGridView1.DataSource = dt;

                }
            }
            catch (Exception ex)
            {
                ex.Message.ToString();
            }
        }
    }
}