Comparison Checks Across Columns

Perform comparisons of values in columns to values in other columns.

Comparison Checks Across Columns

Perform comparisons of values in columns to values in other columns.

Pointblank Validation
2026-04-13|17:03:14
Polars
STEP COLUMNS VALUES TBL EVAL UNITS PASS FAIL W E C EXT
#4CA64C66 1
col_vals_lt
col_vals_lt()
a c 13 6
0.46
7
0.54
#4CA64C 2
col_vals_between
col_vals_between()
d [c, 12000] 13 13
1.00
0
0.00
2026-04-13 17:03:14 UTC< 1 s2026-04-13 17:03:14 UTC
import pointblank as pb

validation = (
    pb.Validate(
        data=pb.load_dataset(dataset="small_table", tbl_type="polars")
    )
    .col_vals_lt(columns="a", value=pb.col("c"))     # values in 'a' > values in 'c'
    .col_vals_between(
        columns="d",                                 # values in 'd' are between values
        left=pb.col("c"),                            # in 'c' and the fixed value of 12,000;
        right=12000,                                 # any missing values encountered result
        na_pass=True                                 # in a passing test unit
    )
    .interrogate()
)

validation
Preview of Input Table
PolarsRows13Columns8
date_time
Datetime
date
Date
a
Int64
b
String
c
Int64
d
Float64
e
Boolean
f
String
1 2016-01-04 11:00:00 2016-01-04 2 1-bcd-345 3 3423.29 True high
2 2016-01-04 00:32:00 2016-01-04 3 5-egh-163 8 9999.99 True low
3 2016-01-05 13:32:00 2016-01-05 6 8-kdg-938 3 2343.23 True high
4 2016-01-06 17:23:00 2016-01-06 2 5-jdo-903 None 3892.4 False mid
5 2016-01-09 12:36:00 2016-01-09 8 3-ldm-038 7 283.94 True low
6 2016-01-11 06:15:00 2016-01-11 4 2-dhe-923 4 3291.03 True mid
7 2016-01-15 18:46:00 2016-01-15 7 1-knw-093 3 843.34 True high
8 2016-01-17 11:27:00 2016-01-17 4 5-boe-639 2 1035.64 False low
9 2016-01-20 04:30:00 2016-01-20 3 5-bce-642 9 837.93 False high
10 2016-01-20 04:30:00 2016-01-20 3 5-bce-642 9 837.93 False high
11 2016-01-26 20:07:00 2016-01-26 4 2-dmx-010 7 833.98 True low
12 2016-01-28 02:51:00 2016-01-28 2 7-dmx-010 8 108.34 False low
13 2016-01-30 11:23:00 2016-01-30 1 3-dka-303 None 2230.09 True high