Add offset and limit generation

boil/_fixtures/00.sql

@@ -1 +1 @@
-SELECT * FROM "t";
+SELECT * FROM "t";

boil/_fixtures/01.sql

@@ -0,0 +1 @@
+SELECT * FROM "q" LIMIT 5 OFFSET 6;

boil/qm/query_mods.go

@@ -40,6 +40,13 @@ func Limit(limit int) QueryMod {
 	}
 }
 
+// Offset into the results
+func Offset(offset int) QueryMod {
+	return func(q *boil.Query) {
+		boil.SetOffset(q, offset)
+	}
+}
+
 // InnerJoin on another table
 func InnerJoin(stmt string, args ...interface{}) QueryMod {
 	return func(q *boil.Query) {

boil/query.go

@@ -41,6 +41,7 @@ type Query struct {
 	orderBy         []string
 	having          []string
 	limit           int
+	offset          int
 }
 
 func buildQuery(q *Query) (string, []interface{}) {
@@ -85,6 +86,13 @@ func buildSelectQuery(q *Query) (*bytes.Buffer, []interface{}) {
 	where, args := whereClause(q)
 	buf.WriteString(where)
 
+	if q.limit != 0 {
+		fmt.Fprintf(buf, " LIMIT %d", q.limit)
+	}
+	if q.offset != 0 {
+		fmt.Fprintf(buf, " OFFSET %d", q.offset)
+	}
+
 	buf.WriteByte(';')
 	return buf, args
 }
@@ -229,6 +237,11 @@ func SetLimit(q *Query, limit int) {
 	q.limit = limit
 }
 
+// SetOffset on the query.
+func SetOffset(q *Query, offset int) {
+	q.offset = offset
+}
+
 func whereClause(q *Query) (string, []interface{}) {
 	if len(q.where) == 0 {
 		return "", nil

boil/query_test.go

@@ -14,7 +14,7 @@ import (
 )
 
 var writeGoldenFiles = flag.Bool(
-	"golden",
+	"test.golden",
 	false,
 	"Write golden files.",
 )
@@ -26,7 +26,8 @@ func TestBuildQuery(t *testing.T) {
 		q    *Query
 		args []interface{}
 	}{
-		{&Query{from: "t"}, []interface{}{}},
+		{&Query{from: "t"}, nil},
+		{&Query{from: "q", limit: 5, offset: 6}, nil},
 	}
 
 	for i, test := range tests {
@@ -102,6 +103,18 @@ func TestSetLimit(t *testing.T) {
 	}
 }
 
+func TestSetOffset(t *testing.T) {
+	t.Parallel()
+
+	q := &Query{}
+	SetOffset(q, 10)
+
+	expect := 10
+	if q.offset != expect {
+		t.Errorf("Expected %d, got %d", expect, q.offset)
+	}
+}
+
 func TestSetSQL(t *testing.T) {
 	t.Parallel()