| 484 | } |
| 485 | |
| 486 | func (_q *MetaQuery) sqlQuery(ctx context.Context) *sql.Selector { |
| 487 | builder := sql.Dialect(_q.driver.Dialect()) |
| 488 | t1 := builder.Table(meta.Table) |
| 489 | columns := _q.ctx.Fields |
| 490 | if len(columns) == 0 { |
| 491 | columns = meta.Columns |
| 492 | } |
| 493 | selector := builder.Select(t1.Columns(columns...)...).From(t1) |
| 494 | if _q.sql != nil { |
| 495 | selector = _q.sql |
| 496 | selector.Select(selector.Columns(columns...)...) |
| 497 | } |
| 498 | if _q.ctx.Unique != nil && *_q.ctx.Unique { |
| 499 | selector.Distinct() |
| 500 | } |
| 501 | for _, p := range _q.predicates { |
| 502 | p(selector) |
| 503 | } |
| 504 | for _, p := range _q.order { |
| 505 | p(selector) |
| 506 | } |
| 507 | if offset := _q.ctx.Offset; offset != nil { |
| 508 | // limit is mandatory for offset clause. We start |
| 509 | // with default value, and override it below if needed. |
| 510 | selector.Offset(*offset).Limit(math.MaxInt32) |
| 511 | } |
| 512 | if limit := _q.ctx.Limit; limit != nil { |
| 513 | selector.Limit(*limit) |
| 514 | } |
| 515 | return selector |
| 516 | } |
| 517 | |
| 518 | // MetaGroupBy is the group-by builder for Meta entities. |
| 519 | type MetaGroupBy struct { |