/// <summary>
/// Analyses the table.
/// </summary>
public void Analyse(IADOConnection conn)
{
using (var cmd = conn.CreateCommand())
{
StringBuilder query = new StringBuilder();
query.AppendLine("SELECT COLUMNPROPERTY(SC.id, name, 'IsIdentity') as [Identity] , * ");
query.AppendLine("FROM INFORMATION_SCHEMA.COLUMNS i_S ");
query.AppendLine("Inner Join syscolumns SC on (SC.Name = i_S.COLUMN_NAME) and (OBJECT_NAME(SC.id) = I_S.TABLE_NAME) ");
query.AppendLine($"Where I_S.TABLE_NAME = '{_name}'");
cmd.CommandText = query.ToString();
IDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
DbColumn column = new DbColumn(_name, reader["COLUMN_NAME"].ToString())
{
IsPrimary = (Convert.ToInt32(reader["Identity"]) != 0),
DataType = reader["DATA_TYPE"].ToString().ToLower(),
IsNullAble = (reader["IS_NULLABLE"].ToString().ToUpper() == "YES"),
Length = reader["CHARACTER_MAXIMUM_LENGTH"] as int? ?? default(int)
};
_columns.Add(column);
}
reader.Close();
reader = null;
foreach (var item in _columns)
{
item.Analyse(conn);
}
}
}
public void Analyse(IADOConnection conn)
{
using (var cmd = conn.CreateCommand())
{
StringBuilder query = new StringBuilder();
query.AppendLine("SELECT * ");
query.AppendLine("From INFORMATION_SCHEMA.TABLES ");
query.AppendLine("Where TABLE_TYPE = 'BASE TABLE'");
cmd.CommandText = query.ToString();
IDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
DbTable table = new DbTable(reader["TABLE_NAME"].ToString());
if (Name == string.Empty)
{
Name = reader["TABLE_CATALOG"].ToString();
}
_tables.Add(table);
}
reader.Close();
reader = null;
foreach (DbTable table in _tables)
{
table.Analyse(conn);
}
}
}
public void Analyse(IADOConnection conn)
{
using (var cmd = conn.CreateCommand())
{
StringBuilder query = new StringBuilder();
query.AppendLine("select CCU.table_name src_table, CCU.constraint_name src_constraint, CCU.column_name src_col, KCU.table_name target_table, KCU.column_name target_col ");
query.AppendLine("from INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE CCU, INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS RC, INFORMATION_SCHEMA.KEY_COLUMN_USAGE KCU ");
query.AppendLine($"Where CCU.table_name = '{_tableName}' AND CCU.column_name = '{_name}' AND CCU.constraint_name = RC.constraint_name And KCU.constraint_name = RC.unique_constraint_name ");
query.AppendLine("order by CCU.table_name, CCU.constraint_name ");
cmd.CommandText = query.ToString();
IDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
IsForeignKey = true;
TargetTable = reader["target_table"].ToString();
TargetColumn = reader["target_col"].ToString();
}
reader.Close();
reader = null;
}
}
