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Meta-information about Mappings

6.0-SNAPSHOT 5.5 5.4 5.3 5.2 5.1 5.0

You can find more information about existing mappings such as the column names and their SQL data types using the information_schema tables.

  1. Create a mapping to a map called myMappingName.

    CREATE MAPPING myMappingName
TYPE IMap
OPTIONS ('keyFormat'='varchar','valueFormat'='int');
    sql

  2. Get the name of all mappings.

    SHOW MAPPINGS;
    sql

    You should see the name of the mapping.

    +--------------------+
|name                |
+--------------------+
|myMappingName       |
+--------------------+

  3. Get more information about the mapping.

    SELECT * FROM information_schema.mappings
WHERE table_name = 'myMappingName';
    sql

    The name of the mapping is stored in the table_name column. Currently, all mappings are part of the public schema in the hazelcast table catalog.

  4. Get information about the column names and the columns' SQL data types.

    SELECT * FROM information_schema.columns
WHERE table_name = 'myMappingName';
    sql

Next Steps

See the SQL statements that you can use to manage your mappings.

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