MV_INFOS
Descriptionβ
Table function, generating temporary tables for asynchronous materialized views, which can view information about asynchronous materialized views created in a certain database.
Syntaxβ
MV_INFOS("database"="<database>")
Required Parametersβ
<database>
Specify the cluster database name to be queried
Return Valueβ
| Field | Type | Description |
|---|---|---|
| Id | BIGINT | Materialized view ID |
| Name | TEXT | Materialized view name |
| JobName | TEXT | Job name corresponding to the materialized view |
| State | TEXT | State of the materialized view |
| SchemaChangeDetail | TEXT | Reason for the state change to SchemaChange |
| RefreshState | TEXT | Refresh state of the materialized view |
| RefreshInfo | TEXT | Refresh strategy information defined for the materialized view |
| QuerySql | TEXT | SQL query defined for the materialized view |
| EnvInfo | TEXT | Environment information when the materialized view was created |
| MvProperties | TEXT | Materialized view properties |
| MvPartitionInfo | TEXT | Partition information of the materialized view |
| SyncWithBaseTables | BOOLEAN | Whether the data is synchronized with the base table. To check which partition is not synchronized, use SHOW PARTITIONS |
Examplesβ
View all materialized views under test
select * from mv_infos("database"="test");
+-------+--------------------------+------------------+--------+--------------------+--------------+---------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+-----------------------------------------------------------+-----------------------------------------------------------------------------------------------------------+--------------------+
| Id | Name | JobName | State | SchemaChangeDetail | RefreshState | RefreshInfo | QuerySql | MvProperties | MvPartitionInfo | SyncWithBaseTables |
+-------+--------------------------+------------------+--------+--------------------+--------------+---------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+-----------------------------------------------------------+-----------------------------------------------------------------------------------------------------------+--------------------+
| 19494 | mv1 | inner_mtmv_19494 | NORMAL | | SUCCESS | BUILD DEFERRED REFRESH AUTO ON MANUAL | SELECT `internal`.`test`.`user`.`k2`, `internal`.`test`.`user`.`k3` FROM `internal`.`test`.`user` | {partition_sync_limit=100, partition_sync_time_unit=YEAR} | MTMVPartitionInfo{partitionType=FOLLOW_BASE_TABLE, relatedTable=user, relatedCol='k2', partitionCol='k2'} | 1 |
| 21788 | test_tablet_type_mtmv_mv | inner_mtmv_21788 | NORMAL | | SUCCESS | BUILD DEFERRED REFRESH AUTO ON MANUAL | SELECT `internal`.`test`.`test_tablet_type_mtmv_table`.`k2`, `internal`.`test`.`test_tablet_type_mtmv_table`.`k3` from `internal`.`test`.`test_tablet_type_mtmv_table` | {} | MTMVPartitionInfo{partitionType=SELF_MANAGE} | 0 |
+-------+--------------------------+------------------+--------+--------------------+--------------+---------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+-----------------------------------------------------------+-----------------------------------------------------------------------------------------------------------+--------------------+
View the materialized view named mv1 under test
select * from mv_infos("database"="test") where Name = "mv1";
+-------+------+------------------+--------+--------------------+--------------+---------------------------------------+---------------------------------------------------------------------------------------------+-----------------------------------------------------------+-----------------------------------------------------------------------------------------------------------+--------------------+
| Id | Name | JobName | State | SchemaChangeDetail | RefreshState | RefreshInfo | QuerySql | MvProperties | MvPartitionInfo | SyncWithBaseTables |
+-------+------+------------------+--------+--------------------+--------------+---------------------------------------+---------------------------------------------------------------------------------------------+-----------------------------------------------------------+-----------------------------------------------------------------------------------------------------------+--------------------+
| 19494 | mv1 | inner_mtmv_19494 | NORMAL | | SUCCESS | BUILD DEFERRED REFRESH AUTO ON MANUAL | SELECT `internal`.`test`.`user`.`k2`, `internal`.`test`.`user`.`k3` FROM `internal`.`test`.`user` | {partition_sync_limit=100, partition_sync_time_unit=YEAR} | MTMVPartitionInfo{partitionType=FOLLOW_BASE_TABLE, relatedTable=user, relatedCol='k2', partitionCol='k2'} | 1 |
+-------+------+------------------+--------+--------------------+--------------+---------------------------------------+---------------------------------------------------------------------------------------------+-----------------------------------------------------------+-----------------------------------------------------------------------------------------------------------+--------------------+
