Class: Sequel::Mysql2::Dataset

Constant Summary

STREAMING_SUPPORTED =
::Mysql2::VERSION >= '0.3.12'
PreparedStatementMethods =
prepared_statements_module(
"sql = self; opts = Hash[opts]; opts[:arguments] = bind_arguments",
Sequel::Dataset::UnnumberedArgumentMapper,
%w"execute execute_dui execute_insert")

Constants included from Sequel::MySQL::MysqlMysql2::DatasetMethods

Sequel::MySQL::MysqlMysql2::DatasetMethods::StoredProcedureMethods

Constants included from Sequel::MySQL::DatasetMethods

Sequel::MySQL::DatasetMethods::MATCH_AGAINST, Sequel::MySQL::DatasetMethods::MATCH_AGAINST_BOOLEAN

Constants inherited from Dataset

Dataset::ACTION_METHODS, Dataset::BITWISE_METHOD_MAP, Dataset::COLUMNS_CLONE_OPTIONS, Dataset::COLUMN_CHANGE_OPTS, Dataset::CONDITIONED_JOIN_TYPES, Dataset::COUNT_FROM_SELF_OPTS, Dataset::COUNT_OF_ALL_AS_COUNT, Dataset::COUNT_SELECT, Dataset::DEFAULT, Dataset::DEFAULT_PREPARED_STATEMENT_MODULE_METHODS, Dataset::EMPTY_ARRAY, Dataset::EMPTY_SELECT, Dataset::EXISTS, Dataset::EXTENSIONS, Dataset::IS_LITERALS, Dataset::IS_OPERATORS, Dataset::JOIN_METHODS, Dataset::LIKE_OPERATORS, Dataset::NON_SQL_OPTIONS, Dataset::N_ARITY_OPERATORS, Dataset::OPTS, Dataset::PREPARED_ARG_PLACEHOLDER, Dataset::PREPARED_STATEMENT_MODULE_CODE, Dataset::QUALIFY_KEYS, Dataset::QUERY_METHODS, Dataset::REGEXP_OPERATORS, Dataset::TRUE_FREEZE, Dataset::TWO_ARITY_OPERATORS, Dataset::UNCONDITIONED_JOIN_TYPES, Dataset::WILDCARD

Instance Attribute Summary

Attributes inherited from Dataset

#db, #opts

Instance Method Summary collapse

Methods included from Dataset::StoredProcedures

#call_sproc, #prepare_sproc

Methods included from Sequel::MySQL::DatasetMethods

#calc_found_rows, #complex_expression_sql_append, #constant_sql_append, #delete_from, #distinct, #explain, #for_share, #full_text_search, #full_text_sql, #insert_ignore, #join_type_sql, #on_duplicate_key_update, #quoted_identifier_append, #supports_derived_column_lists?, #supports_distinct_on?, #supports_group_rollup?, #supports_intersect_except?, #supports_limits_in_correlated_subqueries?, #supports_modifying_joins?, #supports_ordered_distinct_on?, #supports_regexp?, #supports_timestamp_usecs?, #update_ignore

Methods included from Dataset::Replace

#multi_replace, #replace, #replace_sql, #supports_replace?

Methods inherited from Dataset

#<<, #==, #[], #add_graph_aliases, #aliased_expression_sql_append, #all, #array_sql_append, #as_hash, #avg, #bind, #boolean_constant_sql_append, #call, #case_expression_sql_append, #cast_sql_append, clause_methods, #clone, #column_all_sql_append, #columns, #columns!, #complex_expression_sql_append, #constant_sql_append, #count, #current_datetime, def_sql_method, #delayed_evaluation_sql_append, #delete, #distinct, #dup, #each, #each_server, #empty?, #eql?, #escape_like, #except, #exclude, #exclude_having, #exists, #extension, #filter, #first, #first!, #first_source, #first_source_alias, #first_source_table, #for_update, #freeze, #from, #from_self, #frozen?, #function_sql_append, #get, #graph, #grep, #group, #group_and_count, #group_append, #group_by, #group_cube, #group_rollup, #grouping_sets, #hash, #having, #import, #initialize, #insert, #insert_sql, #inspect, #intersect, #invert, #join, #join_clause_sql_append, #join_on_clause_sql_append, #join_table, #join_using_clause_sql_append, #joined_dataset?, #last, #lateral, #limit, #literal_append, #lock_style, #map, #max, #min, #multi_insert, #multi_insert_sql, #naked, #negative_boolean_constant_sql_append, #offset, #or, #order, #order_append, #order_by, #order_more, #order_prepend, #ordered_expression_sql_append, #placeholder_literal_string_sql_append, #prepare, #provides_accurate_rows_matched?, #qualified_identifier_sql_append, #qualify, #quote_identifier_append, #quote_identifiers?, #quote_schema_table_append, #quoted_identifier_append, #recursive_cte_requires_column_aliases?, register_extension, #requires_placeholder_type_specifiers?, #requires_sql_standard_datetimes?, #returning, #reverse, #reverse_order, #row_number_column, #row_proc, #schema_and_table, #select, #select_all, #select_append, #select_group, #select_hash, #select_hash_groups, #select_map, #select_more, #select_order_map, #server, #server?, #set_graph_aliases, #single_record, #single_record!, #single_value, #single_value!, #skip_limit_check, #skip_locked, #split_alias, #split_qualifiers, #sql, #subscript_sql_append, #sum, #supports_cte?, #supports_cte_in_subqueries?, #supports_derived_column_lists?, #supports_distinct_on?, #supports_group_cube?, #supports_group_rollup?, #supports_grouping_sets?, #supports_insert_select?, #supports_intersect_except?, #supports_intersect_except_all?, #supports_is_true?, #supports_join_using?, #supports_lateral_subqueries?, #supports_limits_in_correlated_subqueries?, #supports_modifying_joins?, #supports_multiple_column_in?, #supports_offsets_in_correlated_subqueries?, #supports_ordered_distinct_on?, #supports_regexp?, #supports_replace?, #supports_returning?, #supports_select_all_and_column?, #supports_skip_locked?, #supports_timestamp_timezones?, #supports_timestamp_usecs?, #supports_where_true?, #supports_window_functions?, #to_hash, #to_hash_groups, #truncate, #truncate_sql, #unfiltered, #ungraphed, #ungrouped, #union, #unlimited, #unordered, #unqualified_column_for, #unused_table_alias, #update, #update_sql, #where, #where_all, #where_each, #where_single_value, #window_sql_append, #with, #with_extend, #with_quote_identifiers, #with_recursive, #with_row_proc, #with_sql, #with_sql_all, #with_sql_delete, #with_sql_each, #with_sql_first, #with_sql_insert, #with_sql_single_value

Methods included from SQL::StringMethods

#ilike, #like

Methods included from SQL::OrderMethods

#asc, #desc

Methods included from SQL::NumericMethods

#+, #coerce

Methods included from SQL::ComplexExpressionMethods

#extract, #sql_boolean, #sql_number, #sql_string

Methods included from SQL::CastMethods

#cast, #cast_numeric, #cast_string

Methods included from SQL::BooleanMethods

#~

Methods included from SQL::AliasMethods

#as

Constructor Details

This class inherits a constructor from Sequel::Dataset

Instance Method Details

#fetch_rows(sql) ⇒ Object



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# File 'lib/sequel/adapters/mysql2.rb', line 235

def fetch_rows(sql)
  execute(sql) do |r|
    self.columns = r.fields.map!{|c| output_identifier(c.to_s)}
    r.each(:cast_booleans=>convert_tinyint_to_bool?){|h| yield h}
  end
  self
end

#paged_each(opts = OPTS, &block) ⇒ Object

Use streaming to implement paging if Mysql2 supports it and it hasn't been disabled.



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# File 'lib/sequel/adapters/mysql2.rb', line 245

def paged_each(opts=OPTS, &block)
  if STREAMING_SUPPORTED && opts[:stream] != false
    stream.each(&block)
  else
    super
  end
end

#streamObject

Return a clone of the dataset that will stream rows when iterating over the result set, so it can handle large datasets that won't fit in memory (Requires mysql 0.3.12+ to have an effect).



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# File 'lib/sequel/adapters/mysql2.rb', line 256

def stream
  clone(:stream=>true)
end