type minioResourceCollector struct {
	metricsGroups []*MetricsGroupV2
	desc          *prometheus.Desc
}

// Describe sends the super-set of all possible descriptors of metrics
func (c *minioResourceCollector) Describe(ch chan<- *prometheus.Desc) {
	ch <- c.desc
}

// Collect is called by the Prometheus registry when collecting metrics.

	// find
	sql := DB.ToSQL(func(tx *gorm.DB) *gorm.DB {
		return tx.Model(&User{}).Where("id = ?", 100).Limit(10).Order("age desc").Find(&[]User{})
	})
	assertEqualSQL(t, `SELECT * FROM "users" WHERE id = 100 AND "users"."deleted_at" IS NULL ORDER BY age desc LIMIT 10`, sql)

	// after model changed
	if DB.Statement.DryRun || DB.DryRun {
		t.Fatal("Failed expect DB.DryRun and DB.Statement.ToSQL to be false")

    TF_OperationDescription* desc =
        TF_NewOperation(host_graph_, func_name_, func_node_name_);
    for (auto input : inputs) {
      TF_AddInput(desc, input);
    }
    // Set device to CPU because some ops inside the function might not be
    // available on GPU.
    TF_SetDevice(desc, "/cpu:0");
    *op = TF_FinishOperation(desc, s_);
    ASSERT_EQ(TF_OK, TF_GetCode(s_)) << TF_Message(s_);

			clause.Limit{Limit: &limit10, Offset: 20},
			clause.OrderBy{Columns: []clause.OrderByColumn{{Column: clause.PrimaryColumn, Desc: true}}},
		}

		for _, clause := range clauses {
			stmt.AddClause(clause)
		}

		stmt.Build("SELECT", "FROM", "WHERE", "GROUP BY", "LIMIT", "ORDER BY")
		_ = stmt.SQL.String()
	}

	PercentOff       float32          `gorm:"column:percent_off"`
}

type CouponProduct struct {
	CouponId  int    `gorm:"primarykey;size:255"`
	ProductId string `gorm:"primarykey;size:255"`
	Desc      string
}

type Order struct {
	gorm.Model
	Num      string
	Coupon   *Coupon
	CouponID string
}

type Parent struct {
	gorm.Model
	FavChildID uint
	FavChild   *Child

	Comment string
	Option  string        // WITH PARSER parser_name
	Fields  []IndexOption // Note: IndexOption's Field maybe the same
}

type IndexOption struct {
	*Field
	Expression string
	Sort       string // DESC, ASC
	Collate    string
	Length     int
	Priority   int
}

// ParseIndexes parse schema indexes
func (schema *Schema) ParseIndexes() []*Index {
	indexesByName := map[string]*Index{}
	indexes := []*Index{}

 * if some elements are too small, they will be aggregated by smallElementAggregateFunction.
 *
 * @param list the list to split, must be ordered by size desc
 * @param toIntFunction the function used to map the element to its "size"
 * @param largeElementSplitFunction the function used to further split the large element into smaller pieces

	if !slices.Equal(groups, expected) {
		c.Fatalf("expected group listing: %v, got: %v", expected, groups)
	}
	groupInfo, err := s.adm.GetGroupDescription(ctx, group)
	if err != nil {
		c.Fatalf("group desc err: %v", err)
	}
	c.Assert(groupInfo.Name, group)
	c.Assert(set.CreateStringSet(groupInfo.Members...), set.CreateStringSet(accessKey))
	c.Assert(groupInfo.Policy, policy)

		flags            uint16
		crc32            uint32
		uncompressedSize uint64
		compressedSize   uint64
	}{
		{
			name:    "small store w desc",
			content: []byte("gophers"),
			method:  Store,
			flags:   0x8,
		},
		{
			name:    "small deflate wo desc",
			content: bytes.Repeat([]byte("abcdefg"), 2048),
			method:  Deflate,
		},
	}

	// write a zip file
	archive := new(bytes.Buffer)

		},
		{
			Name:  "idx_user_indices_name3",
			Type:  "btree",
			Where: "name3 != 'jinzhu'",
			Fields: []schema.IndexOption{{
				Field:   &schema.Field{Name: "Name3"},
				Sort:    "desc",
				Collate: "utf8",
				Length:  10,
			}},
		},
		{
			Name:   "idx_user_indices_name4",
			Class:  "UNIQUE",