Parsed test spec with 3 sessions

starting permutation: noseq chkiso prepi preps begin explaini explains select2 drop insert2 end2 selecti selects end
step noseq: SET enable_seqscan = false;
step chkiso: SELECT (setting in ('read committed','read uncommitted')) AS is_read_committed FROM pg_settings WHERE name = 'default_transaction_isolation';
is_read_committed

t              
step prepi: PREPARE getrow_idx AS SELECT * FROM test_dc WHERE data=34 ORDER BY id,data;
step preps: PREPARE getrow_seq AS SELECT * FROM test_dc WHERE data::text=34::text ORDER BY id,data;
step begin: BEGIN;
step explaini: EXPLAIN (COSTS OFF) EXECUTE getrow_idx;
QUERY PLAN     

Gather Motion 3:1  (slice1; segments: 3)
  Merge Key: id
  ->  Sort     
        Sort Key: id
        ->  Index Scan using test_dc_data on test_dc
              Index Cond: (data = 34)
Optimizer: Postgres query optimizer
step explains: EXPLAIN (COSTS OFF) EXECUTE getrow_seq;
QUERY PLAN     

Gather Motion 3:1  (slice1; segments: 3)
  Merge Key: id, data
  ->  Sort     
        Sort Key: id, data
        ->  Seq Scan on test_dc
              Filter: ((data)::text = '34'::text)
Optimizer: Postgres query optimizer
step select2: SELECT * FROM test_dc WHERE data=34 ORDER BY id,data;
id             data           

34             34             
step drop: DROP INDEX CONCURRENTLY test_dc_data; <waiting ...>
step insert2: INSERT INTO test_dc(data) SELECT * FROM generate_series(1, 100);
step end2: COMMIT;
step selecti: EXECUTE getrow_idx;
id             data           

34             34             
134            34             
step selects: EXECUTE getrow_seq;
id             data           

34             34             
134            34             
step end: COMMIT;
step drop: <... completed>