Method initializeTableExpressionData

src/Analyzer/Resolve/QueryAnalyzer.cpp:4181–4359

Initialize table expression data for table expression node

/// Initialize table expression data for table expression node
void QueryAnalyzer::initializeTableExpressionData(const QueryTreeNodePtr & table_expression_node, IdentifierResolveScope & scope)
{
    auto * table_node = table_expression_node->as<TableNode>();
    auto * query_node = table_expression_node->as<QueryNode>();
    auto * union_node = table_expression_node->as<UnionNode>();
    auto * table_function_node = table_expression_node->as<TableFunctionNode>();

    if (!table_node && !table_function_node && !query_node && !union_node)
        throw Exception(ErrorCodes::UNSUPPORTED_METHOD,
        "Unexpected table expression. Expected table, table function, query or union node. Actual: {}. In scope {}",
        table_expression_node->formatASTForErrorMessage(),
        scope.scope_node->formatASTForErrorMessage());

    auto table_expression_data_it = scope.table_expression_node_to_data.find(table_expression_node);
    if (table_expression_data_it != scope.table_expression_node_to_data.end())
        return;

    AnalysisTableExpressionData table_expression_data;

    if (table_node)
    {
        if (!table_node->getTemporaryTableName().empty())
        {
            table_expression_data.table_name = table_node->getTemporaryTableName();
            table_expression_data.table_expression_name = table_node->getTemporaryTableName();
        }
        else
        {
            const auto & table_storage_id = table_node->getStorageID();
            table_expression_data.database_name = table_storage_id.database_name;
            table_expression_data.table_name = table_storage_id.table_name;
            table_expression_data.table_expression_name = table_storage_id.getFullNameNotQuoted();
        }

        table_expression_data.table_expression_description = "table";
    }
    else if (query_node || union_node)
    {
        table_expression_data.table_name = query_node ? query_node->getCTEName() : union_node->getCTEName();
        table_expression_data.table_expression_description = "subquery";
    }
    else if (table_function_node)
    {
        table_expression_data.table_expression_description = "table_function";
    }

    if (table_expression_node->hasAlias())
        table_expression_data.table_expression_name = table_expression_node->getAlias();

    StorageSnapshotPtr storage_snapshot;
    if (table_node || table_function_node)
    {
        storage_snapshot = table_node ? table_node->getStorageSnapshot() : table_function_node->getStorageSnapshot();

        auto get_column_options = GetColumnsOptions(GetColumnsOptions::All).withVirtuals(VirtualsKind::All, VirtualsMaterializationPlace::All);
        if (storage_snapshot->storage.supportsSubcolumns())
        {
            get_column_options.withSubcolumns();