fix: Search from Rexpr if not found from Lexpr

[zaneli]

fixed #2032

Although the existing test failed, I think this change is the more correct behavior.. 🤔 5ae75fd

--- FAIL: TestReplay (0.11s)
    --- FAIL: TestReplay/testdata/params_duplicate/postgresql (0.01s)
        /Users/zaneli/go/src/github.com/zaneli/sqlc/internal/endtoend/endtoend_test.go:170: /Users/zaneli/go/src/github.com/zaneli/sqlc/internal/endtoend/testdata/params_duplicate/postgresql contents differ
        --- FAIL: TestReplay/testdata/params_duplicate/postgresql/go/query.sql.go (0.00s)
            /Users/zaneli/go/src/github.com/zaneli/sqlc/internal/endtoend/endtoend_test.go:180: /Users/zaneli/go/src/github.com/zaneli/sqlc/internal/endtoend/testdata/params_duplicate/postgresql/go/query.sql.go differed (-want +got):
                  (
                  	"""
                  	... // 15 identical lines
                  	`
                  	
                - 	func (q *Queries) SelectUserByID(ctx context.Context, id interface{}) ([]sql.NullString, error) {
                + 	func (q *Queries) SelectUserByID(ctx context.Context, id int32) ([]sql.NullString, error) {
                  		rows, err := q.db.QueryContext(ctx, selectUserByID, id)
                  		if err != nil {
                  	... // 53 identical lines
                  	`
                  	
                - 	func (q *Queries) SelectUserQuestion(ctx context.Context, dollar_1 interface{}) ([]sql.NullString, error) {
                - 		rows, err := q.db.QueryContext(ctx, selectUserQuestion, dollar_1)
                + 	func (q *Queries) SelectUserQuestion(ctx context.Context, id int32) ([]sql.NullString, error) {
                + 		rows, err := q.db.QueryContext(ctx, selectUserQuestion, id)
                  		if err != nil {
                  			return nil, err
                  	... // 19 identical lines
                  	"""
                  )
    --- FAIL: TestReplay/testdata/params_duplicate/mysql (0.01s)
        /Users/zaneli/go/src/github.com/zaneli/sqlc/internal/endtoend/endtoend_test.go:170: /Users/zaneli/go/src/github.com/zaneli/sqlc/internal/endtoend/testdata/params_duplicate/mysql contents differ
        --- FAIL: TestReplay/testdata/params_duplicate/mysql/go/query.sql.go (0.00s)
            /Users/zaneli/go/src/github.com/zaneli/sqlc/internal/endtoend/endtoend_test.go:180: /Users/zaneli/go/src/github.com/zaneli/sqlc/internal/endtoend/testdata/params_duplicate/mysql/go/query.sql.go differed (-want +got):
                  (
                  	"""
                  	... // 16 identical lines
                  	
                  	type SelectUserByIDParams struct {
                - 		ID interface{}
                + 		ID int32
                  	}
                  	
                  	... // 61 identical lines
                  	
                  	type SelectUserQuestionParams struct {
                - 		Column1 interface{}
                + 		ID      int32
                  		Column2 interface{}
                  	}
                  	
                  	func (q *Queries) SelectUserQuestion(ctx context.Context, arg SelectUserQuestionParams) ([]sql.NullString, error) {
                - 		rows, err := q.db.QueryContext(ctx, selectUserQuestion, arg.Column1, arg.Column2)
                + 		rows, err := q.db.QueryContext(ctx, selectUserQuestion, arg.ID, arg.Column2)
                  		if err != nil {
                  			return nil, err
                  	... // 19 identical lines
                  	"""
                  )
FAIL
FAIL	github.com/kyleconroy/sqlc/internal/endtoend	1.451s
FAIL