205 lines
8.6 KiB
Plaintext
205 lines
8.6 KiB
Plaintext
2.5
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- Add new class of tests for queries that are supposed to fail
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- Changes to make failures in commutative operators commutative too
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- Added new optimization to remove useless joins
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- Correct optimization over selection and product
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2.4
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- Improve error reporting
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- Release is now signed with PGP
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- Doesn't crash on network errors
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- Fixed optimization introduced in 2.2 that did not hold in all cases
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- Better handling of parenthesis inside string literals
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- Emit less parenthesis in optimized queries
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2.3
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- Very small release. The windows setup now installs the C++ library
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automatically.
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- The setup was re-made on windows 10, so now it works properly on windows 10
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and all the symbols are shown.
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- If you don't use windows, this release is identical to the previous.
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2.2
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- Added again make install target
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- Ctrl+C in the terminal will terminate the GUI
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- UI indicates ongoing processing with a label
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- Added new optimizations
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- Added shortcuts within the UI
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- History can be navigated with up/down arrows
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- Single line edit mode allows for the resulting relation to be written
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within the query textbox itself.
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2.1
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- Introduced sessions; GUI loads the same relations of the previous time
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- redesigned GUI, to fit in smaller screens
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- Fix bug in tokenizer
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- Fixed bug where select on relations with '---' values would always fail
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- Improve error reporting
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- Fix bug in code to check for new version
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- Performance improvements
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- More Pythonic name for classes (API is compatible with version 2.0)
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2.0
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- Fix bug in relational-cli that made it crash when an exception was raised
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- Point to new website
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- Switch to Python3 and drop support for Python2
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- Switch to Qt5
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- Radical change of language. The UNICODE symbols used previously were meant for a
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Canadian Aborigenal script. Now switched them to use UNICODE math symbols.
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- Since the language is changing, take the chance to use better symbols for JOIN
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- GUI has a new mode to insert multiple queries at once, assigning them to variables
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- Automatic casting is now faster
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- GUI can load multiple relations at once
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- GUI will only assign default names to loaded relations, without prompting the user
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1.2
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- Better tokenizer, gives more indicative errors
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- Parser gives more indicative errors
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- Improved select_union_intersect_subtract optimization to avoid parenthesis whenever possible
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- Moved feedback service, and added the code for it
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- Different way of checking the latest version
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- Removed support for pyside
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1.1
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- Incorrect relational operations now raise an exception instead of returning None
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- Forces relations to have correct names for attributes
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- Colored output in readline mode
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- Can send email in survey
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- Can check for new version online
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- Can use both PySide and PyQt
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- Removed buttons for adding and deleting tuples
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- Can edit relations within the GUI
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- API migrated to unicode (instead of utf-8 encoded strings)
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1.0
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- Adds history in the GUI
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- Adds menus to the GUI
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- Checks if given name to relations are valid
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- Discards the old and not so functional tlb format
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- Float type recognition is more robust, now handled using a regexp
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- Date type recognition is more robust, now using a combination of regexp plus date object
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- Integer type recognition now allows negative numbers in relations
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- Rename operations are now much faster, content won't be copied unless subsequent updates, insert, updates or deletes will occur
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- Added testsuite
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- Module parallel does something, can execute queries in parallel
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- Implemented select_union_intersect_subtract general optimization
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- Removed encoding from .desktop file (was deprecated)
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- Added manpage for relational-cli
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- Internally uses set instead of lists to describe relation's content
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- Tuples are internally mapped on tuples and no longer on lists
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- Set hash method for the classes
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- Parsing of strings representing dates is now cached, eliminating the need for double parse
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- Fixed python expression tokenization, now uses native tokenizer
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- Fixed optimization involving selection and parenthesis in the expression (Rev 260)
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- Fixed futile_union_intersection_subtraction optimization that didn't work when selection operator was in the left subtree (Rev 261)
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- Restyle of the GUI, splitters added
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0.11
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- Font is set only on windows (Rev 206)
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- Improved futile_union_intersection_subtraction in case of A-A, when A is a sub-query (Rev 208)
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- Improved futile_union_intersection_subtraction, handles when a branch of subtracion has a selection (Rev 209)
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- Can load relations specified in command line (Rev 210)
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- Using fakeroot instead of su in make debian (Rev 214)
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- Fixed problem with float numbers with selection of certain relations (Rev 215)
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- Added .desktop file on svn (Rev 216)
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- Automatically fills some fields in the survey (Rev 217)
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- When a query fails, shows the message of the exception (Rev220)
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- Improved tokenizer for select in optimizations, now can accept operators in identifiers (Rev 220)
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- Uses getopt to handle the command line in a more standard way
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- Organized code so the ui can be either qt or command line
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- Does not depend on QT anymore
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- Added readline user interface
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- Added division operator
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0.10
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- In optimizer, added a function that tokenizes an expression
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- Document about complexity of operations
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- Bug: error in update operation, it changed the original tuple, so also other relations using the same tuple would change. Now it copies it.
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- Added make install and uninstall
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- Optimizer generate a tree from the expression
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- Uses python-psyco when it is available
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- Ability to perform optimizations from GUI
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- Able to (temporarily) store queries with a name
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- Mechanism to add new kind of optimizations, without having to edit all the code
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- Implemented duplicated_select general optimization
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- Implemented down_to_unions_subtractions_intersections general optimization
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- Implemented duplicated_projection general optimization
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- Implemented selection_inside_projection general optimization
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- Implemented subsequent_renames general optimization
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- Implemented swap_rename_select general optimization
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- Implemented selection_and_product specific optimization
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- Added stub for converting SQL to relational algebra
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- Implemented futile_union_intersection_subtraction general optimization
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- Implemented swap_rename_projection general optimization
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- Replaced old relational algebra to python compiler with new one based on the new tokenizer/parser (Rev 188)
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- Code refactory to move the new parser into parser.py out of optimizer.py, that will still be compatible (Rev 190)
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- Selection can now accept expressions with parenthesis
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0.9
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- Splitted into independent packages (gui and library)
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- Simplified makefile, bringing outside files for debian package
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- Default source package now doesn't contain informations to generate debian/mac packages
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- "make source_all" generates the old style tarball containing all the files
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- Bug: relational script installed with debian package now passes arguments to the python executable
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- Insert and delete from GUI are now done on the displayed relation, not on the selected one
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0.8
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- Added __eq__ to relation object, will compare ignoring order.
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- New default relation's format is csv, as defined in RFC4180
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- Converted sample's relations to csv
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- Deb postinstall generates optimized files, this will increase loading speed
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- Relation module has SQL-like delete
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- Relation module has SQL-like update
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- Relation module has SQL-like insert
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- GUI can be used to insert and delete tuples
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- Showing fields of selected relation will work with themes different than oxygen
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0.7
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- Added README
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- Expressions between quotes aren't parsed anymore
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- When adding a relation, the file must be chosen 1st, and then the default relation's name is the same as the filename
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- Changed internal rename method. Now uses a dictionary
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- Optimized saving of relations
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- Can save relations from gui
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- Outer join methods simplified
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- Form to send a survey
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- Makefile to create .deb package
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0.6
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- Fixes to run on Mac OsX
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- Added Makefile
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- Able to create .app MacOsX files using "make app"
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- Able to create tar.gz file containing Mac OsX application and samples using "make mac"
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0.5
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- Added support for float numbers
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- Added support for dates
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0.4
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- Created GUI
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0.3
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- Added support for parenthesis in relational queries
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0.2
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- Created parser module
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- Created function to parse expression with operators without parameters
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- Created recoursive function to parse expressions
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0.1
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- Created header class to handle attributes
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- Created relation class
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- Added union
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- Added intersection
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- Added difference
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- Added product
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- Added projection
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- Added rename
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- Projection can use a list or several parameters
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- Added selection
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- Added left join
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- Added right join
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- Added capability of operation even if attributes aren't in the same order
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- Added full outer join
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