AMPLab Q1 — Scan Query

AMPLab benchmark · all AMPLab queries

Filter rankings by pageRank threshold

Representative SQL

Rendered for DataFusion with default parameters.

SELECT
  pageURL,
  pageRank
FROM rankings
WHERE
  pageRank > 1000

Representative DataFrame

Expression family (Polars, PySpark, DataFusion), default parameters.

def q1_expression_impl(ctx: DataFrameContext) -> Any:

    params = get_parameters("Q1")
    threshold = params.get("pagerank_threshold", 1000)

    rankings = ctx.get_table("rankings")
    col = ctx.col
    lit = ctx.lit

    return rankings.filter(col("pageRank") > lit(threshold)).select("pageURL", "pageRank")

Get the exact query for your run

The blocks above are representative. To get the precise statement a specific platform runs at a specific scale, substitute your own values:

from benchbox import AMPLab

bench = AMPLab(scale_factor=0.01)            # your scale factor
queries = bench.get_queries(dialect="datafusion")   # your platform's dialect; drop dialect= for native SQL
print(queries['1'])

For the DataFrame form:

from benchbox.core.query_catalog import get_dataframe_render

print(get_dataframe_render('amplab', '1', family="expression").source)  # or family="pandas"

Source

Query text: benchbox/core/amplab/queries.py