Today, we are issuing the twenty-fifth Preview release: 2.0.0-preview025 (short: preview025).

Breaking changes

Renaming the prisma2 npm package

With this release, we're renaming the Prisma 2 CLI npm package from prisma2 to @prisma/cli. Note that you can still invoke the CLI using the prisma2 command!

To upgrade, you first should uninstall the current prisma2 version and then install the @prisma/cli package.

Local installation (recommended)

The local installation is generally preferred since it prevents conflicting versions of the same package.

# Uninstall current `prisma2` CLI (`preview024` or earlier)
npm uninstall prisma2

# Install new `prisma2` CLI via `@prisma/cli` npm package
npm install @prisma/cli --save-dev

# Invoke the CLI via `npx`
npx prisma2

Global installation

# Uninstall current `prisma2` CLI (`preview024` or earlier)
npm uninstall -g prisma2

# Install new `prisma2` CLI via `@prisma/cli` npm package
npm install -g @prisma/cli

# Invoke the CLI via `npx`
npx prisma2

Other

• The prisma2 --version output changed
• Virtual relation fields (aka “back-relation fields”) follow the same name as the model they relate to during introspection
• The default for errorFormat in the PrismaClient constructor now is colorless

Fixes and improvements per Prisma 2 repository

prisma2

• feat(prisma2/cli): allow arbitrary generator commands with flags
• Update docs to reflect existing examples
• Comments in schema's datasource block fail with Error: Schema parsing error: Unexpected token. Expected one of: End of block ("}"), alphanumeric identifier
• get-config gets the datamodel from the env vars
• Relation table for implicit m:n-relation not recognized by introspection
• update postgres integration tests
• [Introspection] error: Argument 'value' is missing in attribute '@default'.
• add instructions for adding bug reports
• Investigate if we can hide GraphQL Playground on CSB
• Remove AUMFIDARR guardrails
• Failed to validate the query Error occurred during query validation & transformation:
• PostgreSQL: "incorrect binary data format in bind parameter x"
• [Introspection] Comment out all unsupported column types
• MySQL: "DateTime value not stored as DateTime, Int or string"
• sqlite/chinook returns PANIC: Could not parse stored DateTime string: 2009-01-01 00:00:00: ParseError(Invalid) on findMany()
• AWS Lambda timed out
• Don't expose GraphQL Playground
• [Introspection] Guardrail: Remove default values we do not support
• [Introspection] Relation guardrail creates duplicate fields
• [Introspection] Decide on a way forward for introspection of types our internal type system currently cannot represent
• Schema Validation fails with panic thread 'main' panicked at 'Expected ID field ... to be present on the model'
• Remove opinionated casing for back relation field names
• Unclear rust error PANIC
• "Oops. We could not send the error report."
• [Introspection] "The model 'x' cannot be defined because a model with that name already exists."
• [Introspection] Crashes when default value contains line breaks
• Expand --version command
• [Introspection] "created_at timestamp with time zone not null default now()" doesn't work
• [Introspection] ID = (Scalar, RelationField)
• Explicit many to many relationships with/without extra columns
• @default doesnt work for enum

prisma-client-js

• Fix .raw with parameters for PostgreSQL
• Using raw queries with tagged template literals doesn't include parameters
• Fix downloading HTTPS file with HTTP proxy
• Change default error formatting from pretty to colorless
• Some models return Error parsing GraphQL query: query parse error: Parse error at 4:3 Unexpected}[Punctuator]ExpectedName from findMany({}) after introspection
• Can't query models without scalar fields
• prisma2 generate always uses yarn even if you're using NPM in your project
• Cannot find module '@prisma/client' after installing a new package via NPM
• Mutating a Float sometimes results on sightly different value written to Postgres
• Export the current Prisma version
• Using a relation as @id or in @@unique doesn't work
• Some models return undefined from findMany({}) after introspection
• 3 way join with @@id failing when querying
• find by composite primary keys API is super weird
• Can't findOne, update, delete on composite primary keys
• Find by a null time doesn't work
• Find with exact DateTime input doesn't work with findMany or findOne
• Gracefully handle incorrect id column type
• Nested writes don't work on 3rd level with required relation

prisma-engines

• [WIP] new @relation validations
• Fix unused value warning in test
• Set the pool constraints in QE
• Health check fixes
• Test unique fields as ID on postgres
• New relations in the migration engine
• [WIP] IE Changes
• Unify dml error handling
• Test postgres array defaults
• Make dmmf dm errors more beautiful
• Schema validation errors broken since alpha 940
• Citext
• The dmmf cli cmd should not crash for env vars
• Test and fix postgres default handling
• Remove the camelcasing for backrelation fields
• Set all datamodel-related flags in structopt
• Add an introspect subcommand to test-cli
• Test mysql defaults
• Adjust legacy M:N Relation Inference
• Test all identifier types on mysql
• Disable playground by default, flag for enabling
• Test postgres exotic filters
• Discriminate between unsupported types and those that cast to string
• Comment out Unsupported Datatypes
• Avoid unecessary allocation in quaint query building
• Recognize all Prisma 1.0 relations as Implicit Many2Many relations
• Postgres exotic filters
• Do not SELECT 1 before every query
• Test new supported column types
• Adapt ME tests to new defaults handling
• QE: Batch huge IN queries into smaller batches
• Remove logic for dropping relations when they are part of the ID
• Batch big IN/NOT IN selections
• fix(errors): move some errors back in spec
• QE: Optimize the compound id select
• [WIP] Introduce dbGenerated() for Default values
• Extend Benchmarking Suite
• Query Engine: SQL connector must use chunking when a large number of prisma-engines is reached
• Reduce cloning in nested read
• Make implicit relation rules explicit with prisma-fmt

migrate

• prisma2 migrate causes SIGSEGV segfault