Function needVisitChild

src/Interpreters/QueryNormalizer.cpp:369–372

}

static bool needVisitChild(const ASTPtr & child)
{
    return !(child->as<ASTSelectQuery>() || child->as<ASTTableExpression>());
}

/// special visitChildren() for ASTSelectQuery
void QueryNormalizer::visit(ASTSelectQuery & select, const ASTPtr &, Data & data)