Convert Bitmap to Array Function: bitmap_to_array

Description

The main function of bitmap_to_array is to convert the input bitmap type data into array<bigint> type data. This function is very useful in scenarios where bitmap data needs to be processed and converted into an array.

Syntax

bitmap_to_array(bitmap)

• bitmap : The bitmap type data that needs to be converted.

Return Type

This function returns data of type array<bigint>.

Usage Example

Below are several usage examples of the bitmap_to_array function:

Example 1: Combine with the bitmap_build function to convert an integer array to a bitmap, and then convert the bitmap back to an integer array.

SELECT bitmap_to_array(bitmap_build(array(1, 2, 3)));
-- The return result is [1, 2, 3]

Through the above example, you can see the flexibility and practicality of the bitmap_to_array function when handling bitmap data. In practical applications, you can convert bitmap data to an array as needed to facilitate more complex data processing and analysis.