How do I view SQL partitions?

partitions catalog view gives a list of all partitions for tables and most indexes. Just JOIN that with sys. tables to get the tables. All tables have at least one partition, so if you are looking specifically for partitioned tables, then you’ll have to filter this query based off of sys.

How can I see the partition of a table?

5 Answers. You can see Hive MetaStore tables,Partitions information in table of “PARTITIONS”. You could use “TBLS” join “Partition” to query special table partitions.

Where would you get information about partition and partitioned tables in MySQL?

The PARTITIONS table in the INFORMATION_SCHEMA database provides information about partitions and partitioned tables. See Section 24.3. 16, “The INFORMATION_SCHEMA PARTITIONS Table”, for more information; for some examples of queries against this table, see Section 22.2. 7, “How MySQL Partitioning Handles NULL”.

What is database partitioning in MySQL?

Partitioning is a way in which a database (MySQL in this case) splits its actual data down into separate tables, but still get treated as a single table by the SQL layer. When partitioning in MySQL, it’s a good idea to find a natural partition key. You can partition by range or hash.

How do you partition data?

There are three typical strategies for partitioning data:

Horizontal partitioning (often called sharding). In this strategy, each partition is a separate data store, but all partitions have the same schema.
Vertical partitioning.
Functional partitioning.

How can I see the partition of a table in mysql?

Using the SHOW TABLE STATUS statement to determine whether a table is partitioned. Querying the INFORMATION_SCHEMA. PARTITIONS table. Using the statement EXPLAIN SELECT to see which partitions are used by a given SELECT .

How do I select a partition in MySQL?

To obtain rows from multiple partitions, supply their names as a comma-delimited list. For example, SELECT * FROM employees PARTITION (p1, p2) returns all rows from partitions p1 and p2 while excluding rows from the remaining partitions. For general information about joins in MySQL, see Section 13.2.

What are the two types of partitioning methods?

Partitioning Methods