runtime
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task UNION / INTERSECT / EXCEPT · medium

Two measures, one stream

For CISO on hours ending 2024-06-20 13:00 through 18:00, return hour_ending_utc, metric ('demand' or 'net_generation') and mw in one stream, ordered by hour then metric.

what to return

Columns
hour_ending_utcmetricmw in this order
Rows
12 rows · in the order asked
Skill
Combine measures from two tables into one long result. Refresher: Combine sets with UNION →

expected result

Your query should return exactly these columns and values. Run it and compare.

expected result12 rows · in this order
hour_ending_utcmetricmw
2024-06-20 13:00demand22167
2024-06-20 13:00net_generation16503
2024-06-20 14:00demand22848

first 3 of 12 rows

data you can query

Energy dataset: the first 6 rows of each table. Under each column name: the kind of value it holds, and which table it links to. Your queries run on all rows.

hourly_demand9 columns · 52,405 rows
ba_codetext · links to balancing_authoritieshour_ending_utcdate & time · unique idhour_ending_localdate & timedemand_mwnumberforecast_mwnumberlocal_datedate · links to calendarhour_numbernumberadjusted_demand_mwnumberdemand_imputednumber
BPAT2024-01-01 09:002024-01-01 01:00630263092024-01-01163020
BPAT2024-01-01 10:002024-01-01 02:00623062362024-01-01262300
BPAT2024-01-01 11:002024-01-01 03:00617962652024-01-01361790
BPAT2024-01-01 12:002024-01-01 04:00619762772024-01-01461970
BPAT2024-01-01 13:002024-01-01 05:00637863942024-01-01563780
BPAT2024-01-01 14:002024-01-01 06:00660766252024-01-01666070
ba_codetext · links to balancing_authorities
BPAT
hour_ending_utcdate & time · unique id
2024-01-01 09:00
hour_ending_localdate & time
2024-01-01 01:00
demand_mwnumber
6302
forecast_mwnumber
6309
local_datedate · links to calendar
2024-01-01
hour_numbernumber
1
adjusted_demand_mwnumber
6302
demand_imputednumber
0
ba_codetext · links to balancing_authorities
BPAT
hour_ending_utcdate & time · unique id
2024-01-01 10:00
hour_ending_localdate & time
2024-01-01 02:00
demand_mwnumber
6230
forecast_mwnumber
6236
local_datedate · links to calendar
2024-01-01
hour_numbernumber
2
adjusted_demand_mwnumber
6230
demand_imputednumber
0
ba_codetext · links to balancing_authorities
BPAT
hour_ending_utcdate & time · unique id
2024-01-01 11:00
hour_ending_localdate & time
2024-01-01 03:00
demand_mwnumber
6179
forecast_mwnumber
6265
local_datedate · links to calendar
2024-01-01
hour_numbernumber
3
adjusted_demand_mwnumber
6179
demand_imputednumber
0
ba_codetext · links to balancing_authorities
BPAT
hour_ending_utcdate & time · unique id
2024-01-01 12:00
hour_ending_localdate & time
2024-01-01 04:00
demand_mwnumber
6197
forecast_mwnumber
6277
local_datedate · links to calendar
2024-01-01
hour_numbernumber
4
adjusted_demand_mwnumber
6197
demand_imputednumber
0
ba_codetext · links to balancing_authorities
BPAT
hour_ending_utcdate & time · unique id
2024-01-01 13:00
hour_ending_localdate & time
2024-01-01 05:00
demand_mwnumber
6378
forecast_mwnumber
6394
local_datedate · links to calendar
2024-01-01
hour_numbernumber
5
adjusted_demand_mwnumber
6378
demand_imputednumber
0
ba_codetext · links to balancing_authorities
BPAT
hour_ending_utcdate & time · unique id
2024-01-01 14:00
hour_ending_localdate & time
2024-01-01 06:00
demand_mwnumber
6607
forecast_mwnumber
6625
local_datedate · links to calendar
2024-01-01
hour_numbernumber
6
adjusted_demand_mwnumber
6607
demand_imputednumber
0

first 6 of 52,405 rows · your queries use all of them

generation15 columns · 52,405 rows
ba_codetext · links to balancing_authoritieshour_ending_utcdate & time · unique idnet_generation_mwnumbertotal_interchange_mwnumberadjusted_net_generation_mwnumberadjusted_total_interchange_mwnumbercoal_mwnumbernatural_gas_mwnumbernuclear_mwnumberpetroleum_mwnumberhydro_mwnumbersolar_mwnumberwind_mwnumberother_mwnumberunknown_mwnumber
BPAT2024-01-01 09:007993498279934982NULL6631154NULL5955035188NULL
BPAT2024-01-01 10:007853483978534839NULL6671155NULL5799-150184NULL
BPAT2024-01-01 11:007838484978384849NULL6671154NULL5778055185NULL
BPAT2024-01-01 12:007935492379354923NULL6671154NULL5897032184NULL
BPAT2024-01-01 13:008203501582035015NULL6701155NULL6176-119184NULL
BPAT2024-01-01 14:008410501984105019NULL6661154NULL6374036180NULL
ba_codetext · links to balancing_authorities
BPAT
hour_ending_utcdate & time · unique id
2024-01-01 09:00
net_generation_mwnumber
7993
total_interchange_mwnumber
4982
adjusted_net_generation_mwnumber
7993
adjusted_total_interchange_mwnumber
4982
coal_mwnumber
NULL
natural_gas_mwnumber
663
nuclear_mwnumber
1154
petroleum_mwnumber
NULL
hydro_mwnumber
5955
solar_mwnumber
0
wind_mwnumber
35
other_mwnumber
188
unknown_mwnumber
NULL
ba_codetext · links to balancing_authorities
BPAT
hour_ending_utcdate & time · unique id
2024-01-01 10:00
net_generation_mwnumber
7853
total_interchange_mwnumber
4839
adjusted_net_generation_mwnumber
7853
adjusted_total_interchange_mwnumber
4839
coal_mwnumber
NULL
natural_gas_mwnumber
667
nuclear_mwnumber
1155
petroleum_mwnumber
NULL
hydro_mwnumber
5799
solar_mwnumber
-1
wind_mwnumber
50
other_mwnumber
184
unknown_mwnumber
NULL
ba_codetext · links to balancing_authorities
BPAT
hour_ending_utcdate & time · unique id
2024-01-01 11:00
net_generation_mwnumber
7838
total_interchange_mwnumber
4849
adjusted_net_generation_mwnumber
7838
adjusted_total_interchange_mwnumber
4849
coal_mwnumber
NULL
natural_gas_mwnumber
667
nuclear_mwnumber
1154
petroleum_mwnumber
NULL
hydro_mwnumber
5778
solar_mwnumber
0
wind_mwnumber
55
other_mwnumber
185
unknown_mwnumber
NULL
ba_codetext · links to balancing_authorities
BPAT
hour_ending_utcdate & time · unique id
2024-01-01 12:00
net_generation_mwnumber
7935
total_interchange_mwnumber
4923
adjusted_net_generation_mwnumber
7935
adjusted_total_interchange_mwnumber
4923
coal_mwnumber
NULL
natural_gas_mwnumber
667
nuclear_mwnumber
1154
petroleum_mwnumber
NULL
hydro_mwnumber
5897
solar_mwnumber
0
wind_mwnumber
32
other_mwnumber
184
unknown_mwnumber
NULL
ba_codetext · links to balancing_authorities
BPAT
hour_ending_utcdate & time · unique id
2024-01-01 13:00
net_generation_mwnumber
8203
total_interchange_mwnumber
5015
adjusted_net_generation_mwnumber
8203
adjusted_total_interchange_mwnumber
5015
coal_mwnumber
NULL
natural_gas_mwnumber
670
nuclear_mwnumber
1155
petroleum_mwnumber
NULL
hydro_mwnumber
6176
solar_mwnumber
-1
wind_mwnumber
19
other_mwnumber
184
unknown_mwnumber
NULL
ba_codetext · links to balancing_authorities
BPAT
hour_ending_utcdate & time · unique id
2024-01-01 14:00
net_generation_mwnumber
8410
total_interchange_mwnumber
5019
adjusted_net_generation_mwnumber
8410
adjusted_total_interchange_mwnumber
5019
coal_mwnumber
NULL
natural_gas_mwnumber
666
nuclear_mwnumber
1154
petroleum_mwnumber
NULL
hydro_mwnumber
6374
solar_mwnumber
0
wind_mwnumber
36
other_mwnumber
180
unknown_mwnumber
NULL

first 6 of 52,405 rows · your queries use all of them

solution.sql
 

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Two measures, one stream — SQL practice · Runtime