CREATE-DATABASE

CREATE-DATABASE

Name

CREATE DATABASE

Description

This statement is used to create a new database (database)

grammar:

CREATE DATABASE [IF NOT EXISTS] db_name
    [PROPERTIES ("key"="value", ...)];

PROPERTIES Additional information about the database, which can be defaulted.

• If you create an Iceberg database, you need to provide the following information in properties:

  PROPERTIES (
    "iceberg.database" = "iceberg_db_name",
    "iceberg.hive.metastore.uris" = "thrift://127.0.0.1:9083",
    "iceberg.catalog.type" = "HIVE_CATALOG"
  )

  illustrate:

  • ceberg.database : the library name corresponding to Iceberg;
  • iceberg.hive.metastore.uris : hive metastore service address;
  • iceberg.catalog.type: The default is HIVE_CATALOG; currently only HIVE_CATALOG is supported, and more Iceberg catalog types will be supported in the future.

• If you want to specify the default replica distribution for tables in db, you need to specify replication_allocation (the replication_allocation attribute of table will have higher priority than db)

  PROPERTIES (
    "replication_allocation" = "tag.location.default:3"
  )

Example

1. Create a new database db_test

   CREATE DATABASE db_test;

2. Create a new Iceberg database iceberg_test

   CREATE DATABASE `iceberg_test`
   PROPERTIES (
   "iceberg.database" = "doris",
   "iceberg.hive.metastore.uris" = "thrift://127.0.0.1:9083",
   "iceberg.catalog.type" = "HIVE_CATALOG"
   );

Keywords

CREATE, DATABASE

Best Practice