Class: Sequel::SQLite::Dataset
Constant Summary
collapse
- EXPLAIN =
'EXPLAIN %s'.freeze
Constants inherited
from Dataset
Dataset::AND_SEPARATOR, Dataset::BOOL_FALSE, Dataset::BOOL_TRUE, Dataset::COLUMN_CHANGE_OPTS, Dataset::COLUMN_REF_RE1, Dataset::COLUMN_REF_RE2, Dataset::COLUMN_REF_RE3, Dataset::COMMA_SEPARATOR, Dataset::COUNT_OF_ALL_AS_COUNT, Dataset::DATASET_CLASSES, Dataset::DATE_FORMAT, Dataset::JOIN_TYPES, Dataset::MUTATION_METHODS, Dataset::NOTIMPL_MSG, Dataset::NULL, Dataset::N_ARITY_OPERATORS, Dataset::QUESTION_MARK, Dataset::STOCK_COUNT_OPTS, Dataset::STOCK_TRANSFORMS, Dataset::TIMESTAMP_FORMAT, Dataset::TWO_ARITY_OPERATORS, Dataset::WILDCARD
Instance Attribute Summary
Attributes inherited from Dataset
#db, #opts, #quote_identifiers, #row_proc
Instance Method Summary
collapse
Methods inherited from Dataset
#<<, #[], #[]=, #all, #and, #as, #avg, #clone, #column_all_sql, #column_expr_sql, #columns, #columns!, #count, #create_or_replace_view, #create_view, dataset_classes, #def_mutation_method, def_mutation_method, #delete_sql, #each, #each_page, #empty?, #except, #exclude, #exists, #filter, #first, #first_source, #from, #from_self, #function_sql, #get, #graph, #grep, #group, #group_and_count, #having, inherited, #initialize, #insert_multiple, #inspect, #intersect, #interval, #invert, #join_table, #last, #limit, #map, #max, #min, #model_classes, #multi_insert, #multi_insert_sql, #naked, #or, #order, #order_more, #paginate, #polymorphic_key, #print, #qualified_column_ref_sql, #query, #quote_identifier, #quote_identifiers?, #range, #reverse_order, #select, #select_all, #select_more, #select_sql, #set, #set_graph_aliases, #set_model, #single_record, #single_value, #subscript_sql, #sum, #symbol_to_column_ref, #table_exists?, #to_csv, #to_hash, #transform, #transform_load, #transform_save, #unfiltered, #union, #uniq, #unordered, #update_sql
Methods included from Enumerable
#send_each
Instance Method Details
#complex_expression_sql(op, args) ⇒ Object
196
197
198
199
200
201
202
203
204
205
206
|
# File 'lib/sequel_core/adapters/sqlite.rb', line 196
def complex_expression_sql(op, args)
case op
when :~, :'!~', :'~*', :'!~*'
raise Error, "SQLite does not support pattern matching via regular expressions"
when :LIKE, :'NOT LIKE', :ILIKE, :'NOT ILIKE'
"#{'NOT ' if [:'NOT LIKE', :'NOT ILIKE'].include?(op)}(#{literal(args.at(0))} LIKE #{literal(args.at(1))})"
else
super(op, args)
end
end
|
#delete(opts = nil) ⇒ Object
236
237
238
239
240
241
242
243
244
245
246
247
|
# File 'lib/sequel_core/adapters/sqlite.rb', line 236
def delete(opts = nil)
unless (opts && opts[:where]) || @opts[:where]
@db.transaction do
unfiltered_count = count
@db.execute delete_sql(opts)
unfiltered_count
end
else
@db.execute delete_sql(opts)
end
end
|
251
252
253
254
255
|
# File 'lib/sequel_core/adapters/sqlite.rb', line 251
def explain
res = []
@db.result_set(EXPLAIN % select_sql(opts), nil) {|r| res << r}
res
end
|
#fetch_rows(sql, &block) ⇒ Object
216
217
218
219
220
221
222
223
224
225
226
|
# File 'lib/sequel_core/adapters/sqlite.rb', line 216
def fetch_rows(sql, &block)
@db.execute_select(sql) do |result|
@columns = result.columns.map {|c| c.to_sym}
column_count = @columns.size
result.each do |values|
row = {}
column_count.times {|i| row[@columns[i]] = values[i]}
block.call(row)
end
end
end
|
#insert(*values) ⇒ Object
228
229
230
|
# File 'lib/sequel_core/adapters/sqlite.rb', line 228
def insert(*values)
@db.execute_insert insert_sql(*values)
end
|
#insert_sql(*values) ⇒ Object
208
209
210
211
212
213
214
|
# File 'lib/sequel_core/adapters/sqlite.rb', line 208
def insert_sql(*values)
if (values.size == 1) && values.first.is_a?(Sequel::Dataset)
"INSERT INTO #{source_list(@opts[:from])} #{values.first.sql};"
else
super(*values)
end
end
|
#literal(v) ⇒ Object
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
# File 'lib/sequel_core/adapters/sqlite.rb', line 181
def literal(v)
case v
when LiteralString
v
when String
"'#{::SQLite3::Database.quote(v)}'"
when Time
literal(v.iso8601)
when Date, DateTime
literal(v.to_s)
else
super
end
end
|
#quoted_identifier(c) ⇒ Object
177
178
179
|
# File 'lib/sequel_core/adapters/sqlite.rb', line 177
def quoted_identifier(c)
"`#{c}`"
end
|
#update(*args, &block) ⇒ Object
232
233
234
|
# File 'lib/sequel_core/adapters/sqlite.rb', line 232
def update(*args, &block)
@db.execute update_sql(*args, &block)
end
|