gistfile1.cs

    public class ParsedSqlSelectQuery
    {
        public IList<string> SelectElements { get; private set; }
        public string WhereClause { get; private set; }
        public string FromClause { get; private set; }

        public ParsedSqlSelectQuery(string sqlQuery)
        {
            var parser = new TSql100Parser(false);
            IList<ParseError> errors;
            var parsedQuery = parser.Parse(new StringReader(sqlQuery), out errors) as TSqlScript;
            if (errors.Count > 0)
                throw new ArgumentException("Errors in parsing tSQL: " + string.Join("\n", errors.Select(e => e.Message).ToArray()));
            if (parsedQuery == null)
                throw new ArgumentException("Invalid tSQL script: " + sqlQuery);
            if (parsedQuery.Batches.Count != 1)
                throw new ArgumentException("Only 1 batch supported");
            if (parsedQuery.Batches[0].Statements.Count != 1)
                throw new ArgumentException("Only 1 statement supported");

            var selectQuery = parsedQuery.Batches[0].Statements[0] as SelectStatement;

            if(selectQuery == null)
                throw new ArgumentException("Only SELECT queries are supported");

            var querySpecification = (QuerySpecification) selectQuery.QueryExpression;
            SelectElements = querySpecification.SelectElements.Select(e => GetText(e, sqlQuery)).ToList();
            if(querySpecification.WhereClause != null)
                WhereClause = GetText(querySpecification.WhereClause, sqlQuery);
            FromClause = string.Join(" ", querySpecification.FromClauses.Select(e => GetText(e, sqlQuery)).ToArray());
        }

        string GetText(TSqlFragment fragment, string sqlQuery)
        {
            var result = sqlQuery.Substring(fragment.StartOffset, fragment.FragmentLength);
            return result;
        }
    }

Looks pretty clean... is TSql100Parser part of EF?

It's in these namespaces:

using Microsoft.Data.Schema.ScriptDom;
using Microsoft.Data.Schema.ScriptDom.Sql;

Not part of EF as far as I know.