2017-05-18 21:58:03 +08:00
# Change Log
2017-07-14 19:58:25 +08:00
## Next version
### Major Features and Improvements
2017-08-24 06:13:26 +08:00
* CASE construct (without aggregations).
* `rand` function added.
* Maps can now be stored as vertex/edge properties.
Collect Map added
Summary:
Tests are on the way. Please first comment if you're OK with this implementation, some points are discussable.
What works now:
```
bash:MEMGRAPH_ROOT/build/>./tests/manual/console 10
MG>MATCH (n) RETURN COLLECT("age_" + n.age, n.height)
+-----------------------------------------------------------------------------------------------------------------------------------+
| COLLECT("age_" + n.age, n.height) |
+-----------------------------------------------------------------------------------------------------------------------------------+
| {age_10: 176, age_13: 180, age_24: 172, age_25: 179, age_32: 123, age_33: 186, age_37: 147, age_43: 162, age_49: 126, age_6: 170} |
+-----------------------------------------------------------------------------------------------------------------------------------+
```
Reviewers: mislav.bradac, teon.banek, buda
Reviewed By: mislav.bradac, buda
Subscribers: pullbot
Differential Revision: https://phabricator.memgraph.io/D695
2017-08-23 16:43:45 +08:00
* `collect` aggregation now supports Map collection.
2017-09-02 20:30:05 +08:00
* Map indexing supported.
2017-09-05 17:26:46 +08:00
* `assert` function added.
2017-09-09 20:08:59 +08:00
* Use \u to specify 4 digit codepoint and \U for 8 digit
2017-09-13 23:09:04 +08:00
* `counter` function added.
2017-08-20 19:53:50 +08:00
2017-08-11 15:48:13 +08:00
### Bug Fixes and Other Changes
2017-08-17 20:49:37 +08:00
* Keywords appearing in header (named expressions) keep original case.
2017-09-06 18:51:56 +08:00
* Our Bolt protocol implementation is now completely compatible with the protocol version 1 specification. (https://boltprotocol.org/v1/)
2017-08-17 20:49:37 +08:00
2017-08-11 15:48:13 +08:00
## v0.7.0
### Major Features and Improvements
* Variable length path `MATCH` .
* Explicitly started transactions (multi-query transactions).
* Map literal.
* Query parameters (except for parameters in place of property maps).
* `all` function in openCypher.
* `degree` function in openCypher.
2017-07-14 19:58:25 +08:00
* User specified transaction execution timeout.
2017-08-11 15:48:13 +08:00
### Bug Fixes and Other Changes
* Concurrent `BUILD INDEX` deadlock now returns an error to the client.
* A `MATCH` preceeded by `OPTIONAL MATCH` expansion inconsistencies.
* High concurrency Antlr parsing bug.
* Indexing improvements.
* Query stripping and caching speedups.
2017-07-14 19:58:25 +08:00
2017-07-13 20:37:39 +08:00
## v0.6.0
2017-07-07 19:11:31 +08:00
### Major Features and Improvements
2017-07-20 00:14:59 +08:00
* AST caching.
* Label + property index support.
* Different logging setup & format.
2017-07-07 19:11:31 +08:00
## v0.5.0
2017-05-18 21:58:03 +08:00
### Major Features and Improvements
2017-06-16 20:59:28 +08:00
* Use label indexes to speed up querying.
* Generate multiple query plans and use the cost estimator to select the best.
* Snapshots & Recovery.
* Abandon old yaml configuration and migrate to gflags.
* Query stripping & AST caching support.
2017-05-18 21:58:03 +08:00
### Bug Fixes and Other Changes
2017-06-16 20:59:28 +08:00
* Fixed race condition in MVCC. Hints exp+aborted race condition prevented.
2017-07-20 00:14:59 +08:00
* Fixed conceptual bug in MVCC GC. Evaluate old records w.r.t. the oldest.
2017-06-16 20:59:28 +08:00
transaction's id AND snapshot.
* User friendly error messages thrown from the query engine.
2017-05-25 14:38:46 +08:00
## Build 837
### Bug Fixes and Other Changes
2017-07-20 00:14:59 +08:00
* List indexing supported with preceeding IN (for example in query `RETURN 1 IN [[1,2]][0]` ).
2017-05-18 21:58:03 +08:00
## Build 825
### Major Features and Improvements
2017-07-20 00:14:59 +08:00
* RETURN *, count(* ), OPTIONAL MATCH, UNWIND, DISTINCT (except DISTINCT in aggregate functions), list indexing and slicing, escaped labels, IN LIST operator, range function.
2017-05-18 21:58:03 +08:00
### Bug Fixes and Other Changes
2017-07-20 00:14:59 +08:00
* TCP_NODELAY -> import should be faster.
* Clear hint bits.
2017-05-18 21:58:03 +08:00
## Build 783
### Major Features and Improvements
2017-07-20 00:14:59 +08:00
* SKIP, LIMIT, ORDER BY.
* Math functions.
* Initial support for MERGE clause.
2017-05-18 21:58:03 +08:00
### Bug Fixes and Other Changes
2017-07-20 00:14:59 +08:00
* Unhandled Lock Timeout Exception.
2017-05-18 21:58:03 +08:00
## Build 755
### Major Features and Improvements
2017-07-20 00:14:59 +08:00
* MATCH, CREATE, WHERE, SET, REMOVE, DELETE.
