Apply v1.0.23

[nettrash]

Features:

• Production-friendly output for the compare command, enabled with --output-for-production (or OUTPUT_FOR_PRODUCTION=true in the config file). When on, the generated migration is shaped to minimise locking on a live database: indexes are built with CREATE INDEX CONCURRENTLY (the UNIQUE keyword is preserved); indexes on partitioned parents use CREATE INDEX ... ON ONLY {parent} inside the transaction, then CREATE INDEX CONCURRENTLY on each partition followed by ALTER INDEX ... ATTACH PARTITION afterwards (falling back to a single non-concurrent CREATE INDEX on the parent, with an explanatory comment, when the layout cannot be expanded safely); indexes are dropped with DROP INDEX CONCURRENTLY (kept non-concurrent for indexes on partitioned tables, where concurrent drop is illegal); and new foreign keys are added NOT VALID inside the transaction and validated with a separate VALIDATE CONSTRAINT afterwards. Every statement that cannot run inside a transaction block (CREATE/DROP INDEX CONCURRENTLY, VALIDATE CONSTRAINT, ALTER INDEX ... ATTACH PARTITION) is emitted in a clearly marked Production post-commit section after commit. Defaults to false; when off, the output is byte-for-byte identical to previous behaviour.
• Added the OUTPUT_FOR_PRODUCTION key to the sample data/pgc.conf and documented the new flag, configuration key, and behaviour in README.md.
• Production output is now re-runnable: every DDL form PostgreSQL supports is emitted defensively with an idempotency guard where available, so a partially-applied migration can be replayed without failing. CREATE [UNLOGGED] TABLE, CREATE [UNLOGGED] SEQUENCE, CREATE MATERIALIZED VIEW and CREATE [UNIQUE] INDEX [CONCURRENTLY] gain IF NOT EXISTS; CREATE VIEW becomes CREATE OR REPLACE VIEW; ALTER TABLE ... ADD COLUMN gains IF NOT EXISTS; and ALTER TABLE ... DROP COLUMN / DROP CONSTRAINT gain IF EXISTS. CREATE TYPE and ALTER TABLE ... ADD CONSTRAINT are left as-is (PostgreSQL has no idempotency guard for them). The rewrite is literal-, comment- and dollar-quote-aware, so quoted text, commented drops and function bodies are untouched, and it only applies when --output-for-production is on.

[Copilot]

Pull request overview

Adds a new “production-friendly” compare output mode that restructures generated migrations to minimize locking on live databases, while making production-mode migrations re-runnable via SQL-aware idempotency rewrites.

Changes:

• Introduces --output-for-production / OUTPUT_FOR_PRODUCTION to enable production-optimized compare output (concurrent index ops, FK NOT VALID + post-commit VALIDATE, partition-aware index handling, post-commit section).
• Adds a production-mode SQL rewriting module (comparer::production) including an SQL-aware idempotency pass (make_idempotent) plus unit/integration test coverage.
• Documents the new behavior in README and sample config, and bumps version/changelog to v1.0.23.

Reviewed changes

Copilot reviewed 14 out of 15 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
README.md	Documents the new flag/config key and explains production-mode behavior and constraints.
data/pgc.conf	Adds OUTPUT_FOR_PRODUCTION with explanatory comments to the sample config.
CHANGELOG	Adds v1.0.23 release notes describing production-mode output and rerunnable/idempotent DDL behavior.
app/src/main.rs	Adds the CLI flag and threads it into the compare execution path.
app/src/config/core.rs	Adds OUTPUT_FOR_PRODUCTION parsing and exposes it on Config.
app/src/config/core_tests.rs	Extends config parsing tests to cover the new key and default behavior.
app/src/comparer/scanner.rs	Exposes scanner helpers needed for SQL-aware rewriting (crate-visible).
app/src/comparer/production.rs	New production-mode index/FK rewriting and idempotency (make_idempotent) implementation.
app/src/comparer/production_tests.rs	Unit tests for production rewrite behavior and idempotency scanning.
app/src/comparer/mod.rs	Exports the new production module.
app/src/comparer/core.rs	Integrates production-mode behavior into script generation (post-commit section + idempotency pass).
app/src/dump/table.rs	Adds index/FK planning helpers and “defer indexes” script variants to support production-mode emission.
app/src/comparer/core_tests.rs	Adds integration-style tests asserting post-commit concurrent index builds and FK validate splitting.
app/Cargo.toml	Bumps crate version to 1.0.23.
app/Cargo.lock	Updates lockfile version entry accordingly.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Copilot reviewed 14 out of 15 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 14 out of 15 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 14 out of 15 changed files in this pull request and generated 3 comments.