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.
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 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 paretheses.
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.
