SHOW PARTITIONS
Description
The SHOW PARTITIONS statement is used to list partitions of a table. An optional
partition spec may be specified to return the partitions matching the supplied
partition spec.
Syntax
SHOW PARTITIONS table_identifier [ partition_spec ]Parameters
table_identifier-
Specifies a table name, which may be optionally qualified with a database name.
Syntax:[ database_name. ] table_name
partition_spec-
An optional parameter that specifies a comma separated list of key and value pairs
for partitions. When specified, the partitions that match the partition spec are returned.
Syntax:PARTITION ( partition_col_name [ = partition_col_val ] [ , ... ] )
Examples
-- create a partitioned table and insert a few rows.
USE salesdb;
CREATE TABLE customer(id INT, name STRING) PARTITIONED BY (state STRING, city STRING);
INSERT INTO customer PARTITION (state = 'CA', city = 'Fremont') VALUES (100, 'John');
INSERT INTO customer PARTITION (state = 'CA', city = 'San Jose') VALUES (200, 'Marry');
INSERT INTO customer PARTITION (state = 'AZ', city = 'Peoria') VALUES (300, 'Daniel');
-- Lists all partitions for table `customer`
SHOW PARTITIONS customer;
+----------------------+
|partition |
+----------------------+
|state=AZ/city=Peoria |
|state=CA/city=Fremont |
|state=CA/city=San Jose|
+----------------------+
-- Lists all partitions for the qualified table `customer`
SHOW PARTITIONS salesdb.customer;
+----------------------+
|partition |
+----------------------+
|state=AZ/city=Peoria |
|state=CA/city=Fremont |
|state=CA/city=San Jose|
+----------------------+
-- Specify a full partition spec to list specific partition
SHOW PARTITIONS customer PARTITION (state = 'CA', city = 'Fremont');
+---------------------+
|partition |
+---------------------+
|state=CA/city=Fremont|
+---------------------+
-- Specify a partial partition spec to list the specific partitions
SHOW PARTITIONS customer PARTITION (state = 'CA');
+----------------------+
|partition |
+----------------------+
|state=CA/city=Fremont |
|state=CA/city=San Jose|
+----------------------+
-- Specify a partial spec to list specific partition
SHOW PARTITIONS customer PARTITION (city = 'San Jose');
+----------------------+
|partition |
+----------------------+
|state=CA/city=San Jose|
+----------------------+