dialect/sql/entsql: allow non incremental primary keys (#1074)

* Allow non incremental PKs

* Format code with gofmt

* Update entc/integration/config/config_test.go

Co-authored-by: Ariel Mashraki <7413593+a8m@users.noreply.github.com>

* Update entc/integration/config/config_test.go

Co-authored-by: Ariel Mashraki <7413593+a8m@users.noreply.github.com>

* Update entc/integration/config/config_test.go

Co-authored-by: Ariel Mashraki <7413593+a8m@users.noreply.github.com>

* Update entc/integration/config/config_test.go

Co-authored-by: Ariel Mashraki <7413593+a8m@users.noreply.github.com>

* Sort imports

Co-authored-by: Ariel Mashraki <7413593+a8m@users.noreply.github.com>

dialect/entsql/annotation.go

@@ -50,6 +50,17 @@ type Annotation struct {
 	//	}
 	//
 	Size int64 `json:"size,omitempty"`
+
+	// Incremental defines the autoincremental behavior of a column. For example:
+	//
+	//  incrementalEnabled := true
+	//  entsql.Annotation{
+	//      Incremental: &incrementalEnabled,
+	//  }
+	//
+	// By default, this value is nil defaulting to whatever best fits each scenario.
+	//
+	Incremental *bool `json:"incremental,omitempty"`
 }
 
 // Name describes the annotation name.
@@ -85,6 +96,9 @@ func (a Annotation) Merge(other schema.Annotation) schema.Annotation {
 	if s := ant.Size; s != 0 {
 		a.Size = s
 	}
+	if s := ant.Incremental; s != nil {
+		a.Incremental = s
+	}
 	return a
 }
 

dialect/sql/schema/schema.go

@@ -47,6 +47,7 @@ func NewTable(name string) *Table {
 
 // AddPrimary adds a new primary key to the table.
 func (t *Table) AddPrimary(c *Column) *Table {
+	c.Key = PrimaryKey
 	t.AddColumn(c)
 	t.PrimaryKey = append(t.PrimaryKey, c)
 	return t

dialect/sql/schema/sqlite.go

@@ -129,7 +129,7 @@ func (*SQLite) cType(c *Column) (t string) {
 func (d *SQLite) addColumn(c *Column) *sql.ColumnBuilder {
 	b := sql.Column(c.Name).Type(d.cType(c)).Attr(c.Attr)
 	c.unique(b)
-	if c.Increment {
+	if c.PrimaryKey() && c.Increment {
 		b.Attr("PRIMARY KEY AUTOINCREMENT")
 	}
 	c.nullable(b)