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add hints for column description
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parent
44293e6f94
commit
4547ed370a
@ -2,6 +2,7 @@
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#include <base/types.h>
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#include <Common/PODArray.h>
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#include <IO/WriteHelpers.h>
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#include <algorithm>
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#include <cctype>
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@ -102,6 +103,12 @@ public:
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return prompter.getHints(name, getAllRegisteredNames());
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}
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String getHintsString(const String & name) const
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{
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const auto hints = getHints(name);
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return !hints.empty() ? ", may be you meant: " + toString(hints) : "";
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}
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IHints() = default;
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IHints(const IHints &) = default;
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@ -230,8 +230,8 @@ void ColumnsDescription::remove(const String & column_name)
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{
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auto range = getNameRange(columns, column_name);
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if (range.first == range.second)
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throw Exception("There is no column " + column_name + " in table.",
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ErrorCodes::NO_SUCH_COLUMN_IN_TABLE);
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throw Exception(
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"There is no column " + column_name + " in table" + getHintsString(column_name), ErrorCodes::NO_SUCH_COLUMN_IN_TABLE);
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for (auto list_it = range.first; list_it != range.second;)
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{
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@ -244,7 +244,10 @@ void ColumnsDescription::rename(const String & column_from, const String & colum
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{
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auto it = columns.get<1>().find(column_from);
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if (it == columns.get<1>().end())
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throw Exception("Cannot find column " + column_from + " in ColumnsDescription", ErrorCodes::LOGICAL_ERROR);
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{
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throw Exception(
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"Cannot find column " + column_from + " in ColumnsDescription" + getHintsString(column_from), ErrorCodes::LOGICAL_ERROR);
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}
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columns.get<1>().modify_key(it, [&column_to] (String & old_name)
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{
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@ -745,6 +748,18 @@ void ColumnsDescription::removeSubcolumns(const String & name_in_storage)
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subcolumns.get<1>().erase(range.first, range.second);
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}
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std::vector<String> ColumnsDescription::getAllRegisteredNames() const
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{
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std::vector<String> names;
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names.reserve(columns.size());
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for (const auto & column : columns)
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{
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if (column.name.find('.') == std::string::npos)
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names.push_back(column.name);
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}
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return names;
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}
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Block validateColumnsDefaultsAndGetSampleBlock(ASTPtr default_expr_list, const NamesAndTypesList & all_columns, ContextPtr context)
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{
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for (const auto & child : default_expr_list->children)
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@ -91,7 +91,7 @@ struct ColumnDescription
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/// Description of multiple table columns (in CREATE TABLE for example).
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class ColumnsDescription
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class ColumnsDescription : public IHints<2, ColumnsDescription>
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{
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public:
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ColumnsDescription() = default;
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@ -149,7 +149,8 @@ public:
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{
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auto it = columns.get<1>().find(column_name);
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if (it == columns.get<1>().end())
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throw Exception("Cannot find column " + column_name + " in ColumnsDescription", ErrorCodes::LOGICAL_ERROR);
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throw Exception(
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"Cannot find column " + column_name + " in ColumnsDescription" + getHintsString(column_name), ErrorCodes::LOGICAL_ERROR);
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removeSubcolumns(it->name);
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if (!columns.get<1>().modify(it, std::forward<F>(f)))
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@ -196,6 +197,8 @@ public:
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return columns.empty();
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}
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std::vector<String> getAllRegisteredNames() const override;
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/// Keep the sequence of columns and allow to lookup by name.
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using ColumnsContainer = boost::multi_index_container<
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ColumnDescription,
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@ -74,7 +74,6 @@ struct IndicesDescription : public std::vector<IndexDescription>, IHints<1, Indi
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/// Return common expression for all stored indices
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ExpressionActionsPtr getSingleExpressionForIndices(const ColumnsDescription & columns, ContextPtr context) const;
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public:
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Names getAllRegisteredNames() const override;
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};
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