public HashSet <string> GetSrcTableAliasNames()
{
var ret = new HashSet <string>();
var visitor = new GetSourceTablesVisitor();
this.GetStmt().Accept(visitor);
foreach (var table in visitor.Tables)
{
ret.Add(table.GetAliasOrTableName2());
}
return(ret);
}
public HashSet <SqlTable> GetSrcTables()
{
var ret = new HashSet <SqlTable>();
var visitor = new GetSourceTablesVisitor();
this.GetStmt().Accept(visitor);
foreach (var table in visitor.Tables)
{
ret.Add(new SqlTable(table));
}
return(ret);
}
public SqlTable GetTargetTable()
{
var visitor = new GetSourceTablesVisitor();
this.GetStmt().Accept(visitor);
if (visitor.TargetTable == null)
{
return(null);
}
else
{
return(new SqlTable(visitor.TargetTable));
}
}