fix: use ST_GEOMFROMTWKBx2 and add to sources table

[peterdudfield]

This fies the sql seeding

1. use ST_GEOMFROMTWKB twice to insert to database
2. also add insertions to sources_history table

Ive run this on a database and it runs

This should help with #45

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• Have you successfully run make gen with your changes locally?
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[github-actions]

Benchmark Results

Benchmark results

?   	github.com/openclimatefix/data-platform/cmd	[no test files]
?   	github.com/openclimatefix/data-platform/internal/gen/ocf/dp	[no test files]
?   	github.com/openclimatefix/data-platform/internal/interceptors	[no test files]
PASS
ok  	github.com/openclimatefix/data-platform/internal/server/dummy	0.005s
{"level":"debug","time":"2025-11-04T15:57:48Z","message":"Running migrations"}
goos: linux
goarch: amd64
pkg: github.com/openclimatefix/data-platform/internal/server/postgres
cpu: AMD EPYC 7763 64-Core Processor                
BenchmarkPostgresClient/6144000/GetForecastAsTimeseries-4         	     211	   5346007 ns/op
BenchmarkPostgresClient/6144000/GetForecastAtTimestamp-4          	      40	 106985469 ns/op
BenchmarkPostgresClient/6144000/GetObservationsAsTimeseries-4     	     900	   1288148 ns/op
BenchmarkPostgresClient/6144000/CreateForecast-4                  	     459	   2512725 ns/op
PASS
ok  	github.com/openclimatefix/data-platform/internal/server/postgres	114.030s
?   	github.com/openclimatefix/data-platform/internal/server/postgres/gen	[no test files]

Benchmark vs base branch

goos: linux
goarch: amd64
pkg: github.com/openclimatefix/data-platform/internal/server/postgres
cpu: AMD EPYC 7763 64-Core Processor                
                                                     │ bench-main.txt │          bench-fix-sql.txt           │
                                                     │     sec/op     │    sec/op     vs base                │
PostgresClient/6144000/GetForecastAsTimeseries-4         4.826m ± ∞ ¹   5.346m ± ∞ ¹       ~ (p=1.000 n=1) ²
PostgresClient/6144000/GetForecastAtTimestamp-4          105.0m ± ∞ ¹   107.0m ± ∞ ¹       ~ (p=1.000 n=1) ²
PostgresClient/6144000/GetObservationsAsTimeseries-4     1.307m ± ∞ ¹   1.288m ± ∞ ¹       ~ (p=1.000 n=1) ²
PostgresClient/6144000/CreateForecast-4                  2.612m ± ∞ ¹   2.513m ± ∞ ¹       ~ (p=1.000 n=1) ²
geomean                                                  6.449m         6.559m        +1.71%
¹ need >= 6 samples for confidence interval at level 0.95
² need >= 4 samples to detect a difference at alpha level 0.05

[devsjc]

Why does using it twice fix things?

[peterdudfield]

Why does using it twice fix things?

hmm, that im not sure. Perhaps thats not right. Is there an easy way to check the object in the geom column is correct?

[devsjc]

Only by manually inserting it and seeing what it complains about! I'll put this through since this is just test data anyway, and can worry about it another time!