[python] Introduce select for CLI table read

[JingsongLi]

Purpose

paimon table read mydb.users

Options:

• --select, -s: Select specific columns to read (comma-separated)
• --limit, -l: Maximum number of results to display (default: 100)

Examples:

# Read with limit
paimon table read mydb.users -l 50

# Read specific columns
paimon table read mydb.users -s id,name,age

# Combine select and limit
paimon table read mydb.users -s id,name -l 50

Tests

API and Format

Documentation

Generative AI tooling

GLM 5

[plusplusjiajia]

better to add some bad cases, such as the invalid column names are passed

[JingsongLi]

Good point!

[plusplusjiajia]

LGTM, +1