olap

Proposed changes

Close related #7513 (replace it with issue number if it exists).

Describe the overview of changes, and introduce why we need it.

Types of changes

What types of changes does your code introduce to Doris?
Put an x in the boxes that apply

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality

Use case:
Add the ability to search for an element in an array and retrieve back the array index.
As per the PostgreSQL documentation:

array_position ( anycompatiblearray, anycompatible [, integer ] ) → integer

Returns the subscript of the first occurrence of the second argument in the array, or NULL if it's not present

Hey everyone!

mapd-core-cpu is already available on conda-forge (https://anaconda.org/conda-forge/omniscidb-cpu)

now we should add some instructions on the documentation.

at this moment it is available for linux and osx.

some additional information about the configuration:

1. for now, always install omniscidb-cpu inside a conda environment (also it is a good practice), eg:

use Buffer instead of std::vector in column container

We may change the Buffer implementation in the future. but some function break this rules. we need fix it
eg:

raw::make_room(std::vector<T>* v, size_t n) -> raw::make_room(Buffer<T>* v, size_t n)

Is your feature request related to a problem or challenge? Please describe what you are trying to do.
We would like to compute a power function (like 2**4 = 2 * 2 * 2 * 2) in datafusion

@matthewmturner asks for it here: apache/arrow-datafusion#147 (comment)

Describe the solution you'd like

Implement the power function as described in

AOE v0.1.0 limitations:

1. AOE has a global hard limit of ? table count.
2. AOE has a hard limit of ? columns per table.