How to use Cassandra query statements with conditions?

Cassandra utilizes CQL (Cassandra Query Language) for querying, and conditions can be implemented using the WHERE clause. Here are some examples of how to use conditional query statements:

  1. Simple condition query: Use the equal (=) operator to match rows with specified conditions.
  2. Retrieve column1 and column2 from table_name where column1 is equal to value.
  3. Multiple conditions query: You can combine multiple conditions using operators such as AND, OR, and IN.
  4. Retrieve column1 and column2 from table_name where column1 is equal to value1 and column2 is equal to value2.
  5. Range search: You can use operators such as greater than (>), less than (<), greater than or equal to (>=), and less than or equal to (<=) to query values within a specific range.
  6. Retrieve column1 and column2 from the table where column1 falls within the range of value1 and value2.
  7. Fuzzy search: You can use the LIKE operator for fuzzy matching, using % to represent any character and _ to represent a single character.
  8. Retrieve column1 and column2 from the table where column1 starts with ‘value’, where column1 contains ‘value’, and where column1 ends with ‘value’.

Note: When performing conditional queries, make sure that the appropriate indexes have been created on the table to improve query performance.

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