feat(minato): first-class sql json type

[Hieuzest]

Changes

• revert part of fix: join groupBy, project aggr, joined field #42
  fix: aggr expr cannot be used in project / groupBy extra
• define Modifer.group as nullable, split Selection.project & Selection.groupBy
  use Selection.groupBy({}, extra) to perform a full grouping

isNullable(sel.args[0].group) -> project -> only allow non-aggr evalops
else -> groupBy -> only allow aggr evalops

priority: aggr -> non-aggr (the first/most outer aggr will be used)

• remove Dict<string> from types of Selection.table to enforce model passing

Features

• $.object(non-aggr)
  project multiple fields into single column as json object

$.object({
	x: row => row.id,
	...
})
// shortcut model passing
$.object(row)
$.object(row.bar)

• $.array(aggr)
  aggregate single column table into json array
• $.sum,$.avg,$.max,$.min(non-aggr)
  perform array ops on json array
• $.length (aggr & non-aggr)
  the count/length without distinct
• $.in,$.nin(non-aggr)
  support $.in(row.value, row.array)
• query op $size, $el support json array. thus we may safely deprecate list now

Bugfix / Enhancement

• database.join convert Keys to Selection so that model can pass through
• Project and other stages will preserve type for json and list fields now

Tasks

• issue for maria10.5
• basic .$object, $array
• sugar for $.object
• Add extra eval operations for processing json type
• map/subquery embeded not planned
• list type related

[codecov]

Codecov Report

Merging #43 (94a9512) into master (05ea030) will increase coverage by 0.27%.
The diff coverage is 99.76%.

@@            Coverage Diff             @@
##           master      #43      +/-   ##
==========================================
+ Coverage   98.23%   98.51%   +0.27%     
==========================================
  Files          23       24       +1     
  Lines        4880     5594     +714     
  Branches     1206     1416     +210     
==========================================
+ Hits         4794     5511     +717     
+ Misses         86       83       -3     

Files	Coverage Δ
packages/core/src/driver.ts	97.44% <100.00%> (+2.55%)	⬆️
packages/core/src/eval.ts	97.51% <100.00%> (+0.44%)	⬆️
packages/core/src/model.ts	96.31% <100.00%> (ø)
packages/core/src/selection.ts	96.93% <100.00%> (+0.02%)	⬆️
packages/memory/src/index.ts	99.40% <100.00%> (-0.06%)	⬇️
packages/mongo/src/utils.ts	98.91% <100.00%> (+0.08%)	⬆️
packages/sql-utils/src/index.ts	98.64% <100.00%> (+0.45%)	⬆️
packages/sqlite/src/index.ts	97.26% <100.00%> (+0.32%)	⬆️
packages/tests/src/index.ts	100.00% <100.00%> (ø)
packages/tests/src/json.ts	100.00% <100.00%> (ø)
... and 3 more

... and 1 file with indirect coverage changes

📣 Codecov offers a browser extension for seamless coverage viewing on GitHub. Try it in Chrome or Firefox today!

[Hieuzest]

PTAL @shigma