# name: test/sql/delete/test_segment_deletes.test
# description: Test deletions
# group: [delete]

statement ok con1
CREATE TABLE a(i INTEGER);

# insert the values [0, 1, 2, .. 1022, 1023] repeatedly
# however, make sure the order that we insert them is 
loop i 0 20

statement ok con1
INSERT INTO a SELECT * FROM range(0, 1024, 1);

endloop

# verify the count

query I con1
SELECT COUNT(*) FROM a
----
20480

# we test the values 0, 1, 1022 and 1023
# for every tested value, delete it and then rollback

# value = 0
statement ok con1
BEGIN TRANSACTION;
DELETE FROM a WHERE i=0;

# verify the deleted count
query I con1
SELECT COUNT(*) FROM a
----
20460

statement ok con1
ROLLBACK

# verify the initial count
query I con1
SELECT COUNT(*) FROM a
----
20480

# value = 1
statement ok con1
BEGIN TRANSACTION;
DELETE FROM a WHERE i=1;

# verify the deleted count
query I con1
SELECT COUNT(*) FROM a
----
20460

statement ok con1
ROLLBACK

# verify the initial count
query I con1
SELECT COUNT(*) FROM a
----
20480

# value = 1022
statement ok con1
BEGIN TRANSACTION;
DELETE FROM a WHERE i=1022;

# verify the deleted count
query I con1
SELECT COUNT(*) FROM a
----
20460

statement ok con1
ROLLBACK

# verify the initial count
query I con1
SELECT COUNT(*) FROM a
----
20480

# value = 1023
statement ok con1
BEGIN TRANSACTION;
DELETE FROM a WHERE i=1023;

# verify the deleted count
query I con1
SELECT COUNT(*) FROM a
----
20460

statement ok con1
ROLLBACK

# verify the initial count
query I con1
SELECT COUNT(*) FROM a
----
20480

# now, for every tested value, delete it in a separate connection and verify the count
# con2 -> 0
statement ok con2
BEGIN TRANSACTION;

statement ok con2
DELETE FROM a WHERE i=0;

query I con2
SELECT COUNT(*) FROM a;
----
20460

# con3 -> 1
statement ok con3
BEGIN TRANSACTION;

statement ok con3
DELETE FROM a WHERE i=1;

query I con3
SELECT COUNT(*) FROM a;
----
20460

# con4 -> 1022
statement ok con4
BEGIN TRANSACTION;

statement ok con4
DELETE FROM a WHERE i=1022;

query I con4
SELECT COUNT(*) FROM a;
----
20460

# con5 -> 1023
statement ok con5
BEGIN TRANSACTION;

statement ok con5
DELETE FROM a WHERE i=1023;

query I con5
SELECT COUNT(*) FROM a;
----
20460

# con1 still has the original count
query I con1
SELECT COUNT(*) FROM a;
----
20480

# until we update the other transactions
statement ok con2
COMMIT

statement ok con3
COMMIT

statement ok con4
COMMIT

statement ok con5
COMMIT

# now the count is updated
query I con1
SELECT COUNT(*) FROM a;
----
20400