- StarRocks
- Introduction to StarRocks
- Quick Start
- Deployment
- Deployment overview
- Prepare
- Deploy
- Deploy classic StarRocks
- Deploy and use shared-data StarRocks
- Manage
- Table Design
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- Overview of data loading
- Load data from a local file system or a streaming data source using HTTP PUT
- Load data from HDFS or cloud storage
- Continuously load data from Apache Kafka®
- Bulk load using Apache Sparkâ„¢
- Load data using INSERT
- Load data using Stream Load transaction interface
- Realtime synchronization from MySQL
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- Change data through loading
- Transform data at loading
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- ADD SQLBLACKLIST
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- Auxiliary Commands
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- AUTO_INCREMENT
- Function Reference
- Java UDFs
- Window functions
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- Aggregate Functions
- array_agg
- avg
- any_value
- approx_count_distinct
- bitmap
- bitmap_agg
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- grouping
- grouping_id
- hll_empty
- hll_hash
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- variance, variance_pop, var_pop
- var_samp
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- Array Functions
- array_agg
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- base64_to_bitmap
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- sub_bitmap
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- JSON Functions
- Overview of JSON functions and operators
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- Date Functions
- add_months
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- current_timestamp
- date
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- minute
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- week
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- weeks_sub
- year
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- Geographic Functions
- Math Functions
- String Functions
- append_trailing_char_if_absent
- ascii
- char
- char_length
- character_length
- concat
- concat_ws
- ends_with
- find_in_set
- group_concat
- hex
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- instr
- lcase
- left
- length
- locate
- lower
- lpad
- ltrim
- money_format
- null_or_empty
- parse_url
- repeat
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- reverse
- right
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- rtrim
- space
- split
- split_part
- starts_with
- strleft
- strright
- substring
- trim
- ucase
- unhex
- upper
- Pattern Matching Functions
- Percentile Functions
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- Utility Functions
- cast function
- hash function
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- SQL Reference
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- Use the debuginfo file for debugging
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Edit
REFRESH MATERIALIZED VIEW
Description
Manually refresh a specific asynchronous materialized view or partitions within.
CAUTION
You can only manually refresh materialized views that adopt ASYNC or MANUAL refresh strategy. You can check the refresh strategy of an asynchronous materialized view using SHOW MATERIALIZED VIEWS.
Syntax
REFRESH MATERIALIZED VIEW [database.]mv_name
[PARTITION START ("<partition_start_date>") END ("<partition_end_date>")] [FORCE]Parameters in brackets [] is optional.
Parameters
| Parameter | Required | Description |
|---|---|---|
| mv_name | yes | The name of the materialized view to refresh manually. |
| PARTITION START () END () | no | Manually refresh partitions within a certain time interval. |
| partition_start_date | no | The start date of the partitions to refresh manually. |
| partition_end_date | no | The end date of the partitions to refresh manually. |
| FORCE | no | If you specify this parameter, StarRocks forcibly refreshes the corresponding materialized view or partitions. If you do not specify this parameter, StarRocks automatically judges if a partition is updated and refreshes the partition only when needed. |
CAUTION
When refreshing materialized views created based on the external catalogs, StarRocks refreshes all partitions in the materialized views.
Examples
Example 1: Manually refresh a specific materialized view
REFRESH MATERIALIZED VIEW lo_mv1;Example 2: Manually refresh certain partitions of a specific materialized view
REFRESH MATERIALIZED VIEW mv
PARTITION START ("2020-02-01") END ("2020-03-01");Edit
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