public override SqlObject VisitExistsScalarExpression(AntlrSqlParser.ExistsScalarExpressionContext context) { Contract.Requires(context != null); // K_EXISTS '(' sql_query ')' Contract.Requires(context.ChildCount == 4); SqlQuery subquery = (SqlQuery)this.Visit(context.children[2]); return(SqlExistsScalarExpression.Create(subquery)); }
/// <summary> /// Visit a parse tree produced by the <c>ExistsScalarExpression</c> /// labeled alternative in <see cref="AntlrSqlParser.scalar_expression"/>. /// <para> /// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/> /// on <paramref name="context"/>. /// </para> /// </summary> /// <param name="context">The parse tree.</param> /// <return>The visitor result.</return> public virtual Result VisitExistsScalarExpression([NotNull] AntlrSqlParser.ExistsScalarExpressionContext context) { return(VisitChildren(context)); }