import SystemTableCloud from '@site/docs/_snippets/_system_table_cloud.md';

system.processes

This system table is used for implementing the SHOW PROCESSLIST query.

Columns:

sql

SELECT * FROM system.processes LIMIT 10 FORMAT Vertical;

response

Row 1:
──────
is_initial_query:     1
user:                 default
query_id:             35a360fa-3743-441d-8e1f-228c938268da
address:              ::ffff:172.23.0.1
port:                 47588
initial_user:         default
initial_query_id:     35a360fa-3743-441d-8e1f-228c938268da
initial_address:      ::ffff:172.23.0.1
initial_port:         47588
interface:            1
os_user:              bharatnc
client_hostname:      tower
client_name:          ClickHouse
client_revision:      54437
client_version_major: 20
client_version_minor: 7
client_version_patch: 2
http_method:          0
http_user_agent:
quota_key:
elapsed:              0.000582537
is_cancelled:         0
is_all_data_sent:     0
read_rows:            0
read_bytes:           0
total_rows_approx:    0
written_rows:         0
written_bytes:        0
memory_usage:         0
peak_memory_usage:    0
query:                SELECT * from system.processes LIMIT 10 FORMAT Vertical;
thread_ids:           [67]
ProfileEvents:        {'Query':1,'SelectQuery':1,'ReadCompressedBytes':36,'CompressedReadBufferBlocks':1,'CompressedReadBufferBytes':10,'IOBufferAllocs':1,'IOBufferAllocBytes':89,'ContextLock':15,'RWLockAcquiredReadLocks':1}
Settings:             {'background_pool_size':'32','load_balancing':'random','allow_suspicious_low_cardinality_types':'1','distributed_aggregation_memory_efficient':'1','skip_unavailable_shards':'1','log_queries':'1','max_bytes_before_external_group_by':'20000000000','max_bytes_before_external_sort':'20000000000','allow_introspection_functions':'1'}

1 rows in set. Elapsed: 0.002 sec.