How can I retrieve the Cassandra keyspace using double quotation marks?

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To retrieve the Cassandra keyspace using double quotation marks, you can use the following syntax:

SELECT * FROM "keyspace_name"."table_name";

Note that the keyspace and table names are enclosed in double quotation marks. This is necessary if your keyspace or table names contain uppercase letters, hyphens or other characters that are not allowed in CQL identifiers. However, it's generally recommended to use lowercase letters and underscores for keyspace and table names to avoid such issues.