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-# Changelog
-
-> :heart:
-> [**Uptrace.dev** - All-in-one tool to optimize performance and monitor errors & logs](https://uptrace.dev)
-
-**Important**. Please check [Bun](https://bun.uptrace.dev/guide/pg-migration.html) - the next
-iteration of go-pg built on top of `sql.DB`.
-
-## v10.10
-
-- Removed extra OpenTelemetry spans from go-pg core. Now go-pg instrumentation only adds a single
- span with a SQL query (instead of 4 spans). There are multiple reasons behind this decision:
-
- - Traces become smaller and less noisy.
- - [Bun](https://github.com/uptrace/bun) can't support the same level of instrumentation and it is
- nice to keep the projects synced.
- - It may be costly to process those 3 extra spans for each query.
-
- Eventually we hope to replace the information that we no longer collect with OpenTelemetry
- Metrics.
-
-## v10.9
-
-- To make updating easier, extra modules now have the same version as go-pg does. That means that
- you need to update your imports:
-
-```
-github.com/go-pg/pg/extra/pgdebug -> github.com/go-pg/pg/extra/pgdebug/v10
-github.com/go-pg/pg/extra/pgotel -> github.com/go-pg/pg/extra/pgotel/v10
-github.com/go-pg/pg/extra/pgsegment -> github.com/go-pg/pg/extra/pgsegment/v10
-```
-
-- Exported `pg.Query` which should be used instead of `orm.Query`.
-- Added `pg.DBI` which is a DB interface implemented by `pg.DB` and `pg.Tx`.
-
-## v10
-
-### Resources
-
-- Docs at https://pg.uptrace.dev/ powered by [mkdocs](https://github.com/squidfunk/mkdocs-material).
-- [RealWorld example application](https://github.com/uptrace/go-realworld-example-app).
-- [Discord](https://discord.gg/rWtp5Aj).
-
-### Features
-
-- `Select`, `Insert`, and `Update` support `map[string]interface{}`. `Select` also supports
- `[]map[string]interface{}`.
-
-```go
-var mm []map[string]interface{}
-err := db.Model((*User)(nil)).Limit(10).Select(&mm)
-```
-
-- Columns that start with `_` are ignored if there is no destination field.
-- Optional [faster json encoding](https://github.com/go-pg/pgext).
-- Added [pgext.OpenTelemetryHook](https://github.com/go-pg/pgext) that adds
- [OpenTelemetry instrumentation](https://pg.uptrace.dev/tracing/).
-- Added [pgext.DebugHook](https://github.com/go-pg/pgext) that logs failed queries.
-- Added `db.Ping` to check if database is healthy.
-
-### Changes
-
-- ORM relations are reworked and now require `rel` tag option (but existing code will continue
- working until v11). Supported options:
- - `pg:"rel:has-one"` - has one relation.
- - `pg:"rel:belongs-to"` - belongs to relation.
- - `pg:"rel:has-many"` - has many relation.
- - `pg:"many2many:book_genres"` - many to many relation.
-- Changed `pg.QueryHook` to return temp byte slice to reduce memory usage.
-- `,msgpack` struct tag marshals data in MessagePack format using
- https://github.com/vmihailenco/msgpack
-- Empty slices and maps are no longer marshaled as `NULL`. Nil slices and maps are still marshaled
- as `NULL`.
-- Changed `UpdateNotZero` to include zero fields with `pg:",use_zero"` tag. Consider using
- `Model(*map[string]interface{})` for inserts and updates.
-- `joinFK` is deprecated in favor of `join_fk`.
-- `partitionBy` is deprecated in favor of `partition_by`.
-- ORM shortcuts are removed:
- - `db.Select(model)` becomes `db.Model(model).WherePK().Select()`.
- - `db.Insert(model)` becomes `db.Model(model).Insert()`.
- - `db.Update(model)` becomes `db.Model(model).WherePK().Update()`.
- - `db.Delete(model)` becomes `db.Model(model).WherePK().Delete()`.
-- Deprecated types and funcs are removed.
-- `WhereStruct` is removed.
-
-## v9
-
-- `pg:",notnull"` is reworked. Now it means SQL `NOT NULL` constraint and nothing more.
-- Added `pg:",use_zero"` to prevent go-pg from converting Go zero values to SQL `NULL`.
-- UpdateNotNull is renamed to UpdateNotZero. As previously it omits zero Go values, but it does not
- take in account if field is nullable or not.
-- ORM supports DistinctOn.
-- Hooks accept and return context.
-- Client respects Context.Deadline when setting net.Conn deadline.
-- Client listens on Context.Done while waiting for a connection from the pool and returns an error
- when context is cancelled.
-- `Query.Column` does not accept relation name any more. Use `Query.Relation` instead which returns
- an error if relation does not exist.
-- urlvalues package is removed in favor of https://github.com/go-pg/urlstruct. You can also use
- struct based filters via `Query.WhereStruct`.
-- `NewModel` and `AddModel` methods of `HooklessModel` interface were renamed to `NextColumnScanner`
- and `AddColumnScanner` respectively.
-- `types.F` and `pg.F` are deprecated in favor of `pg.Ident`.
-- `types.Q` is deprecated in favor of `pg.Safe`.
-- `pg.Q` is deprecated in favor of `pg.SafeQuery`.
-- `TableName` field is deprecated in favor of `tableName`.
-- Always use `pg:"..."` struct field tag instead of `sql:"..."`.
-- `pg:",override"` is deprecated in favor of `pg:",inherit"`.
-
-## v8
-
-- Added `QueryContext`, `ExecContext`, and `ModelContext` which accept `context.Context`. Queries
- are cancelled when context is cancelled.
-- Model hooks are changed to accept `context.Context` as first argument.
-- Fixed array and hstore parsers to handle multiple single quotes (#1235).
-
-## v7
-
-- DB.OnQueryProcessed is replaced with DB.AddQueryHook.
-- Added WhereStruct.
-- orm.Pager is moved to urlvalues.Pager. Pager.FromURLValues returns an error if page or limit
- params can't be parsed.
-
-## v6.16
-
-- Read buffer is re-worked. Default read buffer is increased to 65kb.
-
-## v6.15
-
-- Added Options.MinIdleConns.
-- Options.MaxAge renamed to Options.MaxConnAge.
-- PoolStats.FreeConns is renamed to PoolStats.IdleConns.
-- New hook BeforeSelectQuery.
-- `,override` is renamed to `,inherit`.
-- Dialer.KeepAlive is set to 5 minutes by default.
-- Added support "scram-sha-256" authentication.
-
-## v6.14
-
-- Fields ignored with `sql:"-"` tag are no longer considered by ORM relation detector.
-
-## v6.12
-
-- `Insert`, `Update`, and `Delete` can return `pg.ErrNoRows` and `pg.ErrMultiRows` when `Returning`
- is used and model expects single row.
-
-## v6.11
-
-- `db.Model(&strct).Update()` and `db.Model(&strct).Delete()` no longer adds WHERE condition based
- on primary key when there are no conditions. Instead you should use `db.Update(&strct)` or
- `db.Model(&strct).WherePK().Update()`.
-
-## v6.10
-
-- `?Columns` is renamed to `?TableColumns`. `?Columns` is changed to produce column names without
- table alias.
-
-## v6.9
-
-- `pg:"fk"` tag now accepts SQL names instead of Go names, e.g. `pg:"fk:ParentId"` becomes
- `pg:"fk:parent_id"`. Old code should continue working in most cases, but it is strongly advised to
- start using new convention.
-- uint and uint64 SQL type is changed from decimal to bigint according to the lesser of two evils
- principle. Use `sql:"type:decimal"` to get old behavior.
-
-## v6.8
-
-- `CreateTable` no longer adds ON DELETE hook by default. To get old behavior users should add
- `sql:"on_delete:CASCADE"` tag on foreign key field.
-
-## v6
-
-- `types.Result` is renamed to `orm.Result`.
-- Added `OnQueryProcessed` event that can be used to log / report queries timing. Query logger is
- removed.
-- `orm.URLValues` is renamed to `orm.URLFilters`. It no longer adds ORDER clause.
-- `orm.Pager` is renamed to `orm.Pagination`.
-- Support for net.IP and net.IPNet.
-- Support for context.Context.
-- Bulk/multi updates.
-- Query.WhereGroup for enclosing conditions in parentheses.
-
-## v5
-
-- All fields are nullable by default. `,null` tag is replaced with `,notnull`.
-- `Result.Affected` renamed to `Result.RowsAffected`.
-- Added `Result.RowsReturned`.
-- `Create` renamed to `Insert`, `BeforeCreate` to `BeforeInsert`, `AfterCreate` to `AfterInsert`.
-- Indexed placeholders support, e.g. `db.Exec("SELECT ?0 + ?0", 1)`.
-- Named placeholders are evaluated when query is executed.
-- Added Update and Delete hooks.
-- Order reworked to quote column names. OrderExpr added to bypass Order quoting restrictions.
-- Group reworked to quote column names. GroupExpr added to bypass Group quoting restrictions.
-
-## v4
-
-- `Options.Host` and `Options.Port` merged into `Options.Addr`.
-- Added `Options.MaxRetries`. Now queries are not retried by default.
-- `LoadInto` renamed to `Scan`, `ColumnLoader` renamed to `ColumnScanner`, LoadColumn renamed to
- ScanColumn, `NewRecord() interface{}` changed to `NewModel() ColumnScanner`,
- `AppendQuery(dst []byte) []byte` changed to `AppendValue(dst []byte, quote bool) ([]byte, error)`.
-- Structs, maps and slices are marshalled to JSON by default.
-- Added support for scanning slices, .e.g. scanning `[]int`.
-- Added object relational mapping.