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system.query_log

A read-only in-memory table stores all the query logs.

Columns

CREATE TABLE `query_log` (
`log_type` TINYINT,
`handler_type` VARCHAR,
`tenant_id` VARCHAR,
`cluster_id` VARCHAR,
`sql_user` VARCHAR,
`sql_user_quota` VARCHAR,
`sql_user_privileges` VARCHAR,
`query_id` VARCHAR,
`query_kind` VARCHAR,
`query_text` VARCHAR,
`event_date` DATE,
`event_time` TIMESTAMP,
`current_database` VARCHAR,
`databases` VARCHAR,
`tables` VARCHAR,
`columns` VARCHAR,
`projections` VARCHAR,
`written_rows` BIGINT UNSIGNED,
`written_bytes` BIGINT UNSIGNED,
`written_io_bytes` BIGINT UNSIGNED,
`written_io_bytes_cost_ms` BIGINT UNSIGNED,
`scan_rows` BIGINT UNSIGNED,
`scan_bytes` BIGINT UNSIGNED,
`scan_io_bytes` BIGINT UNSIGNED,
`scan_io_bytes_cost_ms` BIGINT UNSIGNED,
`scan_partitions` BIGINT UNSIGNED,
`total_partitions` BIGINT UNSIGNED,
`result_rows` BIGINT UNSIGNED,
`result_bytes` BIGINT UNSIGNED,
`cpu_usage` INT UNSIGNED,
`memory_usage` BIGINT UNSIGNED,
`client_info` VARCHAR,
`client_address` VARCHAR,
`exception_code` INT,
`exception_text` VARCHAR,
`stack_trace` VARCHAR,
`server_version` VARCHAR,
`session_settings` VARCHAR,
`extra` VARCHAR
)

Examples

*************************** 4. row ***************************
log_type: 1
handler_type: MySQL
tenant_id: admin
cluster_id:
sql_user: root
sql_user_quota: UserQuota<cpu:0,mem:0,store:0>
sql_user_privileges: GRANT ALL ON *.*, ROLES: []
query_id: eda2a82b-3667-4ffb-b436-953785178c39
query_kind: Query
query_text: select avg(number) from numbers(1000000)
event_date: 2022-09-08
event_time: 2022-09-08 03:32:39.517
current_database: default
databases:
tables:
columns:
projections:
written_rows: 0
written_bytes: 0
written_io_bytes: 0
written_io_bytes_cost_ms: 0
scan_rows: 0
scan_bytes: 0
scan_io_bytes: 0
scan_io_bytes_cost_ms: 0
scan_partitions: 0
total_partitions: 0

, skip_header=0, sql_dialect=PostgreSQL, storage_read_buffer_size=1048576, timezone=UTC, unquoted_ident_case_sensitive=0, scope: SESSION
extra:


*************************** 5. row ***************************
log_type: 2
handler_type: MySQL
tenant_id: admin
cluster_id:
sql_user: root
sql_user_quota: UserQuota<cpu:0,mem:0,store:0>
sql_user_privileges: GRANT ALL ON *.*, ROLES: []
query_id: eda2a82b-3667-4ffb-b436-953785178c39
query_kind: Query
query_text: select avg(number) from numbers(1000000)
event_date: 2022-09-08
event_time: 2022-09-08 03:32:39.519
current_database: default
databases:
tables:
columns:
projections:
written_rows: 0
written_bytes: 0
written_io_bytes: 0
written_io_bytes_cost_ms: 0
scan_rows: 1000000
scan_bytes: 8000000
scan_io_bytes: 0
scan_io_bytes_cost_ms: 0
scan_partitions: 0
total_partitions: 0
result_rows: 1
result_bytes: 9
cpu_usage: 24
memory_usage: 0
client_info:
client_address: 127.0.0.1:53304
exception_code: 0
exception_text:
stack_trace:
server_version:
session_settings: compression=None, empty_as_default=1, field_delimiter=,, flight_client_timeout=60, group_by_two_level_threshold=10000, max_block_size=10000, max_execute_time=0, max_threads=24, quoted_ident_case_sensitive=1, record_delimiter=
, skip_header=0, sql_dialect=PostgreSQL, storage_read_buffer_size=1048576, timezone=UTC, unquoted_ident_case_sensitive=0, scope: SESSION
extra: