module Sequel::DB2::DatasetMethods
Constants
- BITWISE_METHOD_MAP
Public Instance Methods
cast_sql_append(sql, expr, type)
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DB2
casts strings using RTRIM and CHAR instead of VARCHAR.
Calls superclass method
# File lib/sequel/adapters/shared/db2.rb 294 def cast_sql_append(sql, expr, type) 295 if(type == String) 296 sql << "RTRIM(CHAR(" 297 literal_append(sql, expr) 298 sql << "))" 299 else 300 super 301 end 302 end
complex_expression_sql_append(sql, op, args)
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Calls superclass method
# File lib/sequel/adapters/shared/db2.rb 304 def complex_expression_sql_append(sql, op, args) 305 case op 306 when :&, :|, :^, :%, :<<, :>> 307 complex_expression_emulate_append(sql, op, args) 308 when :'B~' 309 literal_append(sql, SQL::Function.new(:BITNOT, *args)) 310 when :extract 311 sql << args[0].to_s 312 sql << '(' 313 literal_append(sql, args[1]) 314 sql << ')' 315 else 316 super 317 end 318 end
quote_identifiers?()
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# File lib/sequel/adapters/shared/db2.rb 320 def quote_identifiers? 321 @opts.fetch(:quote_identifiers, false) 322 end
supports_cte?(type=:select)
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# File lib/sequel/adapters/shared/db2.rb 324 def supports_cte?(type=:select) 325 type == :select 326 end
supports_group_cube?()
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DB2
supports GROUP BY CUBE
# File lib/sequel/adapters/shared/db2.rb 329 def supports_group_cube? 330 true 331 end
supports_group_rollup?()
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DB2
supports GROUP BY ROLLUP
# File lib/sequel/adapters/shared/db2.rb 334 def supports_group_rollup? 335 true 336 end
supports_grouping_sets?()
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DB2
supports GROUPING SETS
# File lib/sequel/adapters/shared/db2.rb 339 def supports_grouping_sets? 340 true 341 end
supports_is_true?()
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DB2
does not support IS TRUE.
# File lib/sequel/adapters/shared/db2.rb 344 def supports_is_true? 345 false 346 end
supports_lateral_subqueries?()
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DB2
supports lateral subqueries
# File lib/sequel/adapters/shared/db2.rb 349 def supports_lateral_subqueries? 350 true 351 end
supports_merge?()
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DB2
supports MERGE
# File lib/sequel/adapters/shared/db2.rb 354 def supports_merge? 355 true 356 end
supports_multiple_column_in?()
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DB2
does not support multiple columns in IN.
# File lib/sequel/adapters/shared/db2.rb 359 def supports_multiple_column_in? 360 false 361 end
supports_select_all_and_column?()
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DB2
only allows * in SELECT if it is the only thing being selected.
# File lib/sequel/adapters/shared/db2.rb 364 def supports_select_all_and_column? 365 false 366 end
supports_where_true?()
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DB2
does not support WHERE 1.
# File lib/sequel/adapters/shared/db2.rb 374 def supports_where_true? 375 false 376 end
supports_window_functions?()
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DB2
supports window functions
# File lib/sequel/adapters/shared/db2.rb 369 def supports_window_functions? 370 true 371 end