0.19.2

Merged PRs

• 886: no parallelism if GOMAXPROCS == 1
• 885: cpp mysql client tests
• 883: mysql client tests install golang
• 878: Go MySQL client test
• 877: validate ref strings when resolving ref specs
  fix for #874
• 875: go: Changes to support some commit walks used in Dolthub diffs when the commits come from different repositories.
• 874: Added skip bats test for ref spec panic on diff
• 873: Fixed ActionExecutor causing duplicate key error loop
• 870: Fixed bug with diffing column defaults
• 869: update vitess
• 868: Added perl mysql client tests
• 867: Added Python SQLAlchemy test to mysql-client-tests
• 190: Harrison pr
  https://github.com/liquidata-inc/go-mysql-server/pull/189/files and a couple fixes
• 188: triggers 2
  Insert triggers working for the following cases:
  • Insert some rows
  • Delete some rows
  • Update some rows
    Missing, needs to be added:
  • set new.x = blah as part of a BEFORE INSERT trigger. Need to rewrite the SET handling parser logic for that.
  • error testing for bad triggers (like inserting on the same table the trigger is defined on)
    As part of this, I rewrote the execution logic for Update, Delete, and Insert entirely.

0.19.1

Merged PRs

• 862: /go/{go.mod, go.sum}: Update go.mod with go-mysql-server@master
• 861: dotnet mysql client test
• 860: Fixed column renaming breaking default values
• 859: mysql client test c
• 187: Additions to utc_timestamp and timediff
• 186: fix collations
• 185: Fixed bug with column renames breaking default values
• 184: /sql/expression/function/{date.go, date_test.go, registery.go}: Add utc_timestamp
• 183: Fixes for bugs found during integration of column defaults
• 180: triggers
• 178: Column Defaults Implementation Part 2
  Here is a comprehensive set of tests for default logic. Practically everything that was added in dolthub/go-mysql-server#174 is covered here, including some edge cases. In addition, the memory table implementation was broken/insufficient in a few ways, so I patched those up.
  The biggest change besides the tests is the additional pass when projecting expressions. This is required in order for defaults that reference other columns (especially those that come after) to be able to pull the correct value. This was something I noticed only after I wrote a test that wasn't behaving as expected (compared to the MySQL client). In fact, all of the changes outside of enginetests were due to fixing bugs that were found from testing.
• 176: Add import statements to readme example
  The example in the readme has no import statements, so it's unclear to someone new to the project. So I added some import statements!
• 174: Column Defaults Implementation Part 1
  This is missing basically all of the new tests, which will come in a separate PR. Proper expressions -> string behavior will also come in a separate PR. Besides that, this is pretty much most of it barring additional bug fixes. All existing tests (some of which use defaults already) pass.
  For integrators, they'll make use of the new engine.ApplyDefaults method.

Closed Issues

• 181: undefined ViewSelectPositionStart & ViewSelectPositionEnd
• 175: Vitess Dep
• 169: Feedback from attempted usage in Integration tests

0.19.0

We are excited to announce the release of a minor version of Dolt, going from 0.18.4 to 0.19.0, prompted by the addition of tags, modeled on Git, and read-tables, a command that provides a form of shallow clone operation that clones only the data at a given commit or branch on a remote.

Tags

We are excited about Dolt as a data distribution format, and we want to provide tools for folks distributing data to robustly version their releases. Tags enable data publishers to signal discrete data releases to their users. Users can diff between two tags to compare changes.

dolt read-tables

In discussions with some of our users we found that they were excited about using Dolt as a format for collaborating on data, but needed to then use that data in automated settings where it would be unacceptable to clone the whole history on every clone, for example ephemeral compute resources that use the data for automated jobs. We provided read-tables as a way to obtain the Dolt database at a given commit, or branch.

Other

As usual we include in this release bug fixes and performance improvements. In this release we particularly emphasized fixes to go-mysql-server that is becoming an increasingly important interface for many of our users.

Merged PRs

• 858: Push/Pull Tags
• 851: tag redesign
• 850: Db/containerize mysql test env
• 849: /mysql-client-tests/{node/, MySQLDockerfile}: POC dockerizing test env
  so the docker container seems to work with the following changes... my JS/Node is kinda wack these days too...
  so this can run like this:

  $ cd mysql-client-tests
  $ docker build -t mysql-tests -f MySQLDockerfile .
  $ docker run -it --rm mysql-tests:latest /bin/bash
  root@e1fbe3c4579f:/mysql-client-tests# bats mysql-client-tests.bats
  ✓ python mysql.connector client
  ✓ python pymysql client
  ✓ mysql-connector-java client
  ✓ node mysql client
  4 tests, 0 failures
  root@e1fbe3c4579f:/mysql-client-tests# exit
  

• 848: MySQL Client Tests
  This PR will contain the MySQL client tests in each language. I've chosen BATS as the framework to drive the testing because I'm familiar with it. We can swap that out if necessary.
• 847: add ReadAheadTableReader.go
  The pipeline framework already handles this, but when reading outside a pipeline it can have performance benefit to having a go routine reading the data than the go routine that is processing it.
• 844: go 1.15 fixes
• 843: partitioning of dolt tables
• 842: Tie Dolt commit struct fields to Noms commit struct fields
  As far as I can tell, the constants in doltdb/Commit.go only work because they match the constants here
  Also, there is currently a mismatch between doltdb.parentListField and datas.ParentListField which should cause the list of parents to never be found
• 841: parallelism
• 840: query differ patch
• 839: Bug fix for reverse sequence cursor.
  Not sufficient to just mark a cursor reverse after the fact, need to initialize cursors at all levels of the tree as reverse as well. Still needs tests, but fixes panics in sqllogictest.
• 162: Changed the test data for one_pk, two_pk to be able to differentiate …
  …between the various columns. This gives us more confidence that we're choosing the right field index in subqueries.

0.18.3

We are releasing Dolt 0.18.3 with a host of bug fixes and performance improvements. In particular:

• SHOW TABLES now supports AS OF syntax, which can point at a timestamp or branch
• subqueries can now reference their surrounding outer scope, bringing them into line with MySQL subqueries
• substantial memory footprint improvements, particularly when importing data

Merged PRs

• 837: /{.github, go}: remove check-committers check from ci
• 835: Updated go-mysql-server, added test for SHOW TABLES AS OF
• 834: Andy/release tags
  First pass at implementing dolt tag. Basic functionality to create, list, and delete tags. For now the command is hidden. At the Noms layer, tags are implemented as commits. Still todo:
  • Checkout a tag (Git does this via detached head)
  • Push/Pull tags to/from a remote
• 831: Updated to hard fork of vitess
• 829: Zachmu/mysql update
  Fixed compile errors and problems in query differ in latest go-mysql-server (not checked in yet). Will update go-mysql-server in go.mod before checking this in. Tests will fail until then.
• 827: add --show-current option to dolt branch
  I added --show-current option to dolt branch cli.
  ref. #818
• 826: shallow clone
• 825: Updated version for release of version 0.18.2
• 159: Updated references for hard fork of vitess
• 158: Fixed panic when using non-literals as column defaults
  This fixes #104
• 157: Fixed the run script and a couple of the integrations
• 156: Bug fix for issue 152
  This fixes #152
• 155: Zachmu/delete js
  Deleted JS integration and unused theme files.
• 154: Zachmu/analyzer scope 5
  Final-ish solution for subquery expression analysis. Haven't yet merged the original PR since I still haven't fixed dolt to work with this.
• 151: Zachmu/analyzer scope 3
  Partial implementation of subqueries with outer scope resolution. Not every subquery works yet, but I believe that this is strictly additive in terms of capabilities: no query that worked before is broken by this change, and many now pass. I want to get this merged in since it includes a few large interface changes and file moves that could conflict with other work. I will verify that this increases pass rates in sqllogictest before merging.

Closed Issues

• 830: Dropping named foreign key does not allow the foreign key name to be reused
• 152: Better error message for unquoted string in AS OF queries

0.18.2

We have released Dolt 0.18.2 with bug fixes, performance improvements (mainly around memory usage), and improvements to the way we handle merges.

Merged PRs

• 824: /.github/workflows/ci-bats-tests.yaml: revert changes now that breaki…
  fixed here https://github.community/t/github-action-environment-variable-missing-breaking-issue/125913
• 823: /.github/workflows/ci-bats-tests.yaml: Skip aws remotes bats tests
• 822: /go/go.mod: update eventsapi generated types
  related to #816
• 820: foreign keys can use primary keys as parent table indexes
  This change makes a special case for foreign keys that reference primary key(s) in the parent table. If all of the parent table columns are primary keys, we create an index to use for the foreign key.
  Ideally we'd make use of the existing clustered index as the parent table index. Because we will soon be adding keyless tables and allowing primary key changes, I'm punting, for now, on a more elegant implementation.
• 814: Fixed memory leak when running sqllogictests
  Performance seems roughly the same compared to the pre-FK changes from my testing. Perhaps not the best solution, but it fixes the leak while preserving performance.
• 813: Foreign Key, Index changes
  • Added diff support for foreign keys and indexes
  • Updated commit, stage, and reset logic to match tables based on column tags instead of table names
• 812: Andy/range reader empty map
• 811: Andy/foreign key changes
• 807: ALTER TABLE x ADD INDEX unnamed
• 805: Added support and tests for CREATE TABLE INDEX
• 804: Resolved memory leak
  Fixes a memory leak that was observed during a large import. It appears that the primary key tuples were never deallocating, although I could not pinpoint what's holding on to the tuples. The tableEditAccumulator seems to be the only place, and it is discarded after it goes through flushEditAccumulator, so that doesn't seem to be it. However, setting its fields to nil fixes the leak, indicating that there is somewhere holding on to old tableEditAccumulators. I also checked if async.ActionExecutor was the culprit, but manual debugging and testing showed that it wasn't holding on to any references once they went through the work method. This isn't a true fix, as there is still technically a leak for whatever is holding on to the tableEditAccumulator, but it's a leak of mere kilobytes per hour rather than megabytes per minute.
  Here is an image from pprof from before.
  
  Same query, but with the changes. Will not be equal to zero as the tuples (returned from here) are still stored in memory before being written to disk, so this is what we'd expect/desire.
  
  Also verified each by watching memory usage in Task Manager (Windows 10).
• 800: Updated version for release of version 0.18.1
• 149: Added indexes to CREATE TABLE
• 147: create parent table indexes for foreign keys

0.18.1

We are pleased to announce a patch release with bug fixes and performance improvements, specifically:

• SQL Alchemy Python library could not parse SHOW CREATE statements from Dolt because the datatypes came back upper case (valid SQL, but breaks a hashtable look up in SQL Alchemy metadata parsing)
• Fix the dolt_history_<table> tables, which had broken commit filtering
• fix error when attempting to create a commit with unresolved conflicts still in the working set

Merged PRs

• 799: go/libraries/doltcore/env/actions: commit.go: Error when attempting to create a commit with unresolved conflicts still in the working set.
  I realized when working on a blog post that dolt commit will currently go ahead and create the merge commit even if there are unstaged conflicts in one of the merged tables. This is not the behavior we want.
  Currently, we do not allow staging tables that have conflicts. This change makes it so dolt commit also fails if there are any conflicts in any of the tables in the working set.
• 796: Andy/history table bug
• 795: go/libraries/doltcore/doltdb: Use parentsList in a Commit if it is available.
• 794: uncommenting tests
• 793: Zachmu/analyzer update
  Upgraded to latest go-mysql-server, fixed breaking changes from analyzer renamings / signature changes.
• 789: schema merge
  Foreign Key merge is somewhat incomplete here, hence the skipped BATS. I'm going to implement the FK changes we discussed earlier this week in order to finish FK merge.
• 788: Db/fix ci checkfmt
  Not really sure what's going on here... I reran you branch, which seems to consistently fail the go/utils/repofmt/checkfmt.sh... That script uses goimports (go install golang.org/x/tools/cmd/goimports) to check the import order of the file... Not really sure why this works.
  Alternative I could separate each script into its own run step in the workflow...
• 787: go/store/datas: commit.go: Start storing commit parents as a List instead of a Set.
  Commit parent order has meaning in our use case. The branch that gets merged
  into is always the first commit in the parents list. Up until this change, the
  noms layer stores commit parents as a Set, which is unordered and orders the
  parents based on their commit hash.
  This changes commit struct to carry both parents Set and parentsList List.
  CommitOptions supplies a ParentsList, but both get stored for backwards
  compatibility with existing dolt clients.
  This change does not include changes to start using the stored parentsList in
  things like ancestor traversal or dolt log. The intended migration is that
  the read logic will read from parentsList in a commit if it is present, and
  will fall back to the parents Set if it is not.
  Eventually we will be able to migrate to not writing parents Set anymore.
  There is no current plan to drop support for reading parents Set when
  parentsList is not available.
• 786: go/libraries/doltcore/doltdb: commit_spec.go: Make CommitSpec internal state unexported.
• 785: go/cmd/dolt/commands: merge.go: Make merge operate on commit specs, not branch refs directly.
• 784: go/cmd/dolt: Change commit spec handling so that abbreviated forms of remotes are supported.
  This changes doltdb.CommitSpec to carry the original input in the refs case, instead of trying to add a prefix or anything else. Instead, doltdb.Resolve() takes the current HEAD ref, and fully resolves the CommitSpec itself.
  There was some confusion in usage across the code base with NewCommitSpec. In particular, there was a lot of NewCommitSpec("HEAD", "some-branch-name-that-is-not-CWB") in order to get NewCommitSpec("some-branch-name-that-is-not-CWB", ""). This collapsed all such uses to the same syntax. "HEAD" is only used for resolving the CWB now.
  In places where the CommitSpec was statically known to not be HEAD, I've not bothered to always thread the CWBRef to the Resolve call.
  This change will break ld Dolt usage, but I will follow up there when this lands in master.
• 782: go/libraries/doltcore/merge: resolve.go: Fix panic when resolve conflicts for a deleted-in-our-branch row.
• 781: Zachmu/show foreign keys
  Implemented new foreign key interfaces for go-mysql-server, and upgrade to latest vitess and go-mysql-server
• 780: Release
• 145: Zachmu/analyzer scope
  Refactoring / renaming, method comments, and new tests related to analyzer deep dive. Added a new Scope param to every analyzer function (not yet used).
• 144: Lower-case types in SHOW CREATE TABLE and DESCRIBE TABLE output.
  This matches MySQL behavior, and is required by at least one third-party tool (SqlAlchemy)
• 143: Zachmu/fk bugfix
  Fixed a couple issues in test setup revealed by testing foreign keys with dolt
• 142: Formatted the repo
• 141: Zachmu/desc table
  Added key info to output of DESCRIBE TABLE / SHOW COLUMNS
• 140: Zachmu/show create foreign keys
  Support for foreign keys in SHOW CREATE TABLE statements, and engine tests of the same.

0.18.0

We are excited to announce the release of significant enhancements to Dolt's SQL implementation, as well as a new feature, prompting a minor version bump to 0.18.0.

Diffable Queries

Dolt's diff command now supports a -q flag which will evaluate the results of a query at two commits and compare them:
dolt diff -q <query>

This gives users a richer programmatic interface into analyzing the impact of changes through time by showing them the exact changes in, potentially complex, queries at various points in the commit graph. For example, consider the National Vulnerabilities Database on DoltHub:

%dolt diff p30hoseurm9qfl7jhb9t4l7jfnshk6v9 -q 'select floor(impact_score), count(*) from cve group by floor(impact_score)'
+-----+-------------------------+----------+
|     | FLOOR(CVE.impact_score) | COUNT(*) |
+-----+-------------------------+----------+
|  <  | <NULL>                  | 8468     |
|  >  | <NULL>                  | 8428     |
|  <  | 1                       | 3125     |
|  >  | 1                       | 3124     |
|  <  | 2                       | 41465    |
|  >  | 2                       | 41668    |
|  <  | 3                       | 14324    |
|  >  | 3                       | 14318    |
|  <  | 4                       | 5385     |
|  >  | 4                       | 5418     |
|  <  | 5                       | 22039    |
|  >  | 5                       | 22034    |
|  <  | 6                       | 33798    |
|  >  | 6                       | 33890    |
|  <  | 9                       | 282      |
|  >  | 9                       | 283      |
|  <  | 10                      | 16798    |
|  >  | 10                      | 16864    |
+-----+-------------------------+----------+

This shows the changes in the counts of various vulnerabilities across a range of impact score buckets. We are excited to continue enhancing the richness of the programmatic interfaces we provide into Dolt's commit graph to facilitate more robust automated interactions.

Foreign Keys

Many of the major use-cases identified for Dolt involve the need to sync with existing RDBMS systems. With this in mind we are committed to moving towards total SQL compatibility as quickly as possible. A major piece of this is foreign keys. Many application servers use foreign keys to maintain valid structure around their data, and not supporting those constructs would make it tough to replicate an existing table structure that used them without manual schema manipulation.

In this release we now support inter-table foreign keys. We do not yet support intra-table foreign keys (i.e. a constraint on a table against the same table), which is less common, though allowed in the standard. We will support such constraints in a future release.

New SQL functions

We added support for the list of functions below. You can see an index of functions that we support relative to the MySQL standard in our docs.

GET_LOCK
IS_FREE_LOCK
IS_USED_LOCK
RELEASE_LOCK
RELEASE_ALL_LOCKS
ASCII
BIN
BIT_LENGTH
SIGN
UCASE
UNHEX
ACOS
ASIN
ATAN
CRC32
COS
COT
HEX
DEGREES
RADIANS
SIN
TAN
CURDATE
CURRENT_DATE
CURRENT_TIME
CURRENT_TIMESTAMP
CURTIME
DAYNAME
MICROSECOND
MONTHNAME
TIME_TO_SEC
WEEKOFYEAR
DATE_FORMAT
WEEK

Merged PRs

• 778: Bh/update gms
• 777: Merge Block
  As discussed (and in relation to #773), we will fail on all merges where the schemas are not the same. As a result, one index bats test no longer makes sense, and all other tests that rely on the behavior have been skipped/commented out.
• 776: moved query_diff to diff -q
• 774: Foreign Keys Part 3 Episode 2
  The last bit of things to add for foreign keys!
• 772: Zachmu/show indexes
  Implemented new interface methods needed by latest go-mysql-server
• 771: Foreign Keys Part 3 Episode 1
  Here are the merge changes along with some bats tests
• 770: /Jenkinsfile: Remove stages that are now in github actions
• 769: /.github/workflows/ci-compatibility-tests.yaml: Add compatibility test github actions
• 768: Added GROUP BY support, tests to dolt query_diff
• 767: /.github/workflows/ci-check-repo.yaml: Iterating on github actions check repo
  looking into fixing this: https://github.com/liquidata-inc/dolt/pull/767/checks?check_run_id=808971285#step:4:296

  2020/06/25 21:04:02 Error running `git merge-base remotes/origin/db/ci-github-actions-check-repo remotes/origin/master` to find merge parent: exit status 128
  exit status 1
  

  the exit status 128 is from //go/utils/checkcommiters/main.go ... im thinking could be the go version? i had to use 1.13 here to get past the error that occurred when i used go version ^1.13 regarding the -mod=readonly flag....
• 766: Andy/json dates
  fix addressing #755
• 764: /.github/workflows/ci-bats-tests.yaml: Add dolt bats tests ci github actions
  Seems to run the tests for both linux and macos ... need to fix the broken tests that have specific dependency issues
• 762: Db/ci GitHub actions go
  Run go tests for dolt on PRs
• 760: /.github/workflows/bump-brew-formula.yml: Attempt to fix syntax and dispell yaml syntax error
  My best guess at the correct syntax... not a huge fan of actions rn lol
• 758: Added skipped test for json DATETIME bug.
  Also, added || false on some regexes to create deterministic behavior in old versions of bash.
• 757: .gitmodules,proto/third_party/golang-protobuf: Remove unused golang-protobuf submodule.
• 754: proto/{third_party,Makefile}: Adopt protobuf-go and grpc-go for protobuf message generation.
• 753: Foreign Keys Part 3
  This PR implements the commit functionality, along with commit --force.
• 750: bats/remotes.bats: Add bats tests, some skipped, for some remote branch ref handling tests.
• 749: go/go.mod: go get -u ./....
• 747: bats: Change remotesrv pid handling to capture pid of background process.
• 746: query_diff via lazy projections
  Another iteration of query-diff. The methodology is:
  • Generate a query plan at each RootValue from & to
  • Alter the query plan to lazily evaluate projections. This allows access to any column that is used in ordering the query results
  • Determine the order of the query results by extracting all primary key columns and SortFields
  • Iterate over the modified query plans, diffing their results by comparing row order. Then evaluate the projections to produce the final diff
    This version does not yet incorporate Noms layer diffing. It also does not yet handle aggregate functions.
    depends on dolthub/go-mysql-server#127
• 745: README.md: Correct GOROOT to GOPATH in installation instructions.
• 743: Upgraded go-mysql-server and vitess
• 740: /benchmark/sql_regressions/run_regressions.sh: Iterating on timing commands
  spits out timing info for these different commands
• 738: go/store/datas: FindCommonAncestor: Fix potential for explosive growth if RefsByHeight queues if the same references are visited multiple times.
• 737: First draft of GitHub Action for bumping homebrew on tag
  This relies on us being able to keep a private secret on this repo. I know the repo is public but I believe we can keep a token private to repo admins and then provide access to that to the GitHub Action so that it can raise a PR against the Homebrew repository?
• 735: Release
• 139: Added format script
• 138: Andy/query diff 4
• 135: Zachmu/show create indexes
  Added non-primary keys to SHOW CREATE TABLE output
• 134: test fix
• 133: Zachmu/show indexes
  Fixed show index statements to work with native indexes. Added several new methods to Index interface, which will break existing integrators.
• 130: more functions
• 129: pow fix: these children aren't twins
• 128: Zachmu/wsl fix
  Added WSL-checking to socket checking code for linux, as it appears to be broken. In this case, don't do socket polling, same as Windows and Darwin. Also added additional trace logging to handler.go, and moved the socket polling goroutine to its own method.
• [127](https://github.com/d...

0.17.2

A patch release containing bug fixes and performance improvements, in particular we are focused on reducing the number of skipped BATS tests.

Merged PRs

• 733: go/libraries: sqle: history_table: Thread context on row iterators.
• 729: Zachmu/engine test
  Run the go-mysql-server engine tests on dolt.
• 728: added --with-tags flag to schema export
  I only changed dolt schema export. Other commands like dolt show tables or dolt diff --sql still output tags. This is easy to change on case by case basis.
• 724: Bh/conflicts table3
• 723: Bh/conflicts table2
• 115: Zachmu/engine test dolt
  Modified test harness and data to work with doltdb
• 113: Zachmu/test harness 2
  Rewrote engine tests to use a harness, so that integrators can run them against their own implementation. In the process, broke the giant engine_test.go into many smaller files.

Closed Issues

• 726: The apache license is missing the certain copyright owner

0.17.1

We are excited to announce the release of Dolt 0.17.1.

In this lease we extend the index support we discussed in the prior release to UNIQUE indexes. Our type inference now also supports DATE, TIME, and DATETIME types.

Merged PRs

• 713: removed pkg resultset
• 710: New TableEditor, thread-safety, and table import
  So I created a new TableEditor under doltdb, similar to the IndexEditor. I renamed the old editor to sqlTableEditor, and it's now using TableEditor underneath. It's just to comply with the SQL interfaces.
  Perhaps one of the most striking changes are the synchronization changes. The motivation was from a comment from @zachmu , which implied that some of the write paths are parallelized for performance, and the old editor was not thread-safe by any means. In order to support these new write paths, it was necessary to make TableEditor thread-safe. Because of this, IndexEditor also received the same changes. I verified that there was a lack of data races using go test -race, and also ran the concurrency tests with thousands more iterations and edits (they're lower now so that we're not spending an hour in Jenkins). Just to verify that my tests also worked, I made temporary intentional changes that would allow for data races, and the tests caught them, and go test -race also caught them.
  In addition to the above changes, dolt table import and dolt table cp both use the TableEditor now. Due to the concerns mentioned in the previous paragraph, I decided to benchmark a few metrics to get an idea of the performance impact of these two major changes.
  To measure just the impact of the threading changes, I imported 1,000,000 rows through SQL and timed the results:

  Before: 67.074s
  After:  67.363s
  

  The result is close enough that it's within the margin of error, so it's safe to say that new TableEditor is just as performant as the old implementation.
  The table import is a different story though. This time, I imported a 10,000,000 row .psv, with the results being:

  Before: 53.521s
  After:  107.816s
  

  It takes roughly twice as long now, which is slower, but not tragically so. Primarily, the difference in speed is that the old code just wrote directly to the edit accumulator, where as the TableEditor does a ton more bookkeeping, being a generalized editor.
• 709: testing large numeric types
• 708: Extra BATS for table import & schema import
• 707: validates index columns
• 706: reset hard fixes
• 705: always calculate merge stats
• 703: Zachmu/indexes
  Killed off index driver and let tables declare indexes natively.
• 702: create table bats
• 701: Bh/remotes bat fixes
• 700: swish
• 699: Andy/arg parsing
• 698: fixed some bats tests
• 697: support HEAD and ancestor spec syntax
• 694: fixing zach's bats
• 693: optimize diff and hist tables
• 692: floats literals can be used in int columns in mysql 8
• 691: quoting time types
• 690: fix panic for select 1/0 from dual
  depends on go-mysql-server PR
• 689: fixed panic for empty string args
  one down
• 688: o/libraries/doltcore/remotestorage/events_interceptor.go: Add missing ADD_TABLE_FILES instrumentation.
• 687: go/{store/nbs,libraries/doltcore/remotestorage}: Expose repository size as Size() on TableFileSource.
• 686: go/libraries/doltcore/remotestorage: Move retrying and metrics instrumentation for doltremoteapi interactions to grpc client interceptors.
• 685: go/store/nbs/table.go: Thread ctx at Open() for table file pull interface.
• 684: proto: remoatesapi: GetRepoMetadataResponse: Add repository_size field for communicating approximate repository size.
• 683: Added UNIQUE constraint
  Largest change you'll see here is that I've extracted the index changes in table_editor.go into its own file and built upon it. I've also changed everything that modifies indexes, from rebuilding the indexes to the SQL path, to make use of the new index editor.
• 682: table import inferrence
• 681: Diff SQL handles escape sequences
• 679: Index performance improvements
• 678: diff v2
• 677: Updated version for release of version 0.17.0
• 110: Zachmu/index refactor
  Rewrote index interfaces. Indexes are now available either through a driver, or natively via the table implementations themselves.
  Also re-enabled auth tests for windows by removing the pilosa dependency, and fixed several test suites that were broken on Linux.
• 109: 1.0/0.0 == NULL, 1 div 0 == NULL
• 108: Andy/div by zero
  This fixes a panic for select 1/0 from dual
  MySQL also errors on divide by zero in at least some configs
  I can change this to return NULL if that's preferable.
• 107: sql/session.go: Use new view and index registries per sql.Context, instead of global ones.
• 106: Zachmu/table naming regression
  Fixed regression caused by update to alias handling. Removed a couple places that allowed aliased tables to be referred to by their unaliased names, which is an error.

0.17.0

We are excited to announce the release of Dolt 0.17.0!

Dolt now supports the main index statements, that is CREATE INDEX, DROP INDEX, and all ALTER TABLE commands involving an index. Some less common types of index types that are not supported are PARTIAL, UNIQUE, SPATIAL, and FULLTEXT. Finally, SHOW INDEX is not yet supported.

As usual, please file an issue if you find any bugs, or have a feature request.

Merged PRs

• 676: Db/tester fix
• 674: SELECT comparisons and BETWEEN now use indexes
  SELECT <, <=, >, >=, and BETWEEN all now use indexes. Previously, only = used indexes or primary keys, so this should be a pretty huge win.
• 673: Andy/baseball databank fix
  Baseball databank was breaking the previous migration because it has null values in primary keys
  (see table allstarfull)
• 671: Fix issue with renaming temp files across volumes
• 668: Added partial key lookups for indexes and primary keys
• 665: Zachmu/case insensitive
  Updated tests for new case-insensitivity improvements in go-mysql-server. Relies on dolthub/go-mysql-server#102, which is not on master yet.
• 664: hotfix
  not sure why Jenkins didn't catch these on #658 but it's fixed
• 663: Verify System Table Tag Constants
  Tags for Dolt system tables are defined with const definitions and need to be consistent across Dolt versions. Using iota within const definitions can lead to unexpected results:

  const (
  name = "Andy"
  mood = "ugh"
  a = iota + 1
  b
  c
  )
  func main() {
  fmt.Println(a)
  fmt.Println(b)
  fmt.Println(c)
  }
  

  3
  4
  5
  

  These unit tests lock these constants in place.
• 662: Updated version for release of version 0.16.4
• 103: Zachmu/user privileges
  Adds an empty user_privileges table to the information_schema database. This is necessary for the latest version of datagrip.
  Stacked on top of #102.
• 102: Zachmu/case sensitivity
  Better (but not perfect) case insensitivity for table, alias and column names. Better enforcement of unique table / alias names in queries.

Closed Issues

• 672: Installation script quietly fails