Parsed test spec with 3 sessions

starting permutation: noseq prepi preps begin explaini explains select2 drop insert2 end2 selecti selects end

starting permutation: noseqchkisoprepi 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;

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

f

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

Sort

Sort Key: id

-> Index Scan using test_dc_data on test_dc

Index Cond: (data = 34)

step explains: EXPLAIN (COSTS OFF) EXECUTE getrow_seq;

QUERY PLAN

Sort

Sort Key: id, data

-> Seq Scan on test_dc

Filter: ((data)::text = '34'::text)

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

step selects: EXECUTE getrow_seq;

id data

34 34

step end: COMMIT;

step drop: <... completed>

{

step"noseq" {SETenable_seqscan=false; }

step"chkiso" {SELECT (settingin ('read committed','read uncommitted'))ASis_read_committedFROMpg_settingsWHEREname='default_transaction_isolation'; }

step"prepi" {PREPAREgetrow_idxASSELECT*FROMtest_dcWHEREdata=34ORDERBYid,data; }

step"preps" {PREPAREgetrow_seqASSELECT*FROMtest_dcWHEREdata::text=34::textORDERBYid,data; }

step"begin" {BEGIN; }

step"drop" {DROPINDEXCONCURRENTLYtest_dc_data; }