usaid-gov/ethiopia-pastoralist-areas-resilience-improvement-ufe8-zncd

  • agriculture
  • ethiopia
  • impact evaluations
  • prime
  • resilience

Query the Data Delivery Network

Query the DDN

The easiest way to query any data on Splitgraph is via the "Data Delivery Network" (DDN). The DDN is a single endpoint that speaks the PostgreSQL wire procotol. Any Splitgraph user can connect to it at data.splitgraph.com:5432 and query any version of over 40,000 datasets that are hosted or proxied by Splitgraph.

For example, you can query the ethiopia_pastoralist_areas_resilience_improvement table in this repository, by referencing it like:

"usaid-gov/ethiopia-pastoralist-areas-resilience-improvement-ufe8-zncd:latest"."ethiopia_pastoralist_areas_resilience_improvement"

or in a full query, like:

SELECT 
    ":id", -- Socrata column ID
    "q2222_4", -- 2222. How did you give your child camel milk? (As yogurt)
    "q2217_1", -- 2217. Where did this milk come from? (Own animals)
    "income_poor", -- DERIVED: Total Per Capita Daily Expenditures USD 1.25
    "q2213_2", -- 2213. Where did this milk come from? (Relative s animals)
    "kcal_req_l", -- DERIVED: Hh calorie req: light
    "pf16_30", -- DERIVED: Percent females 16-30 years of age
    "q2214_3", -- 2214. How did you give your child cow milk? (With food)
    "q2221_3", -- 2221. Where did this milk come from? (Bought)
    "q2213_4", -- 2213. Where did this milk come from? (Other)
    "q2221_1", -- 2221. Where did this milk come from? (Own animals)
    "q2214_1", -- 2214. How did you give your child cow milk? (Pure milk to drink)
    "kebele", -- Kebele
    "q2222_1", -- 2222. How did you give your child camel milk? (Pure milk to drink)
    "edmax_sec", -- DERIVED: Highest education level in hh: secondary or higher
    "q2214_2", -- 2214. How did you give your child cow milk? (With tea)
    "q2213_1", -- 2213. Where did this milk come from? (Own animals)
    "q2214_5", -- 2214. How did you give your child cow milk? (Other)
    "q2216", -- 2216. Do you you give child goat mild to drink?
    "q2222_2", -- 2222. How did you give your child camel milk? (With tea)
    "q2208", -- 2208. Is child under 60 months?
    "hhsize", -- DERIVED: Number of household members
    "proj_area", -- DERIVED: Project Area (Zone)
    "q2218_4", -- 2218. How did you give your child goat milk? (As yogurt)
    "q2222_5", -- 2222. How did you give your child camel milk? (Other)
    "q2218_3", -- 2218. How did you give your child goat milk? (With food)
    "edmax_prim_f", -- DERIVED: Highest education level of females in hh: primary
    "asset_ind_p_01", -- DERIVED: Total consumption assets owned, 0-100 scale
    "pm16_30", -- DERIVED: Percent males 16-30 years of age
    "q2211", -- 2211. Height in centimeters
    "q2217_2", -- 2217. Where did this milk come from? (Relative s animals)
    "asset_ind_c", -- DERIVED: Total consumption assets owned
    "q2218_5", -- 2218. How did you give your child goat milk? (Other)
    "edmax_sec_f", -- DERIVED: Highest education level of females in hh: secondary or higher
    "q2221_4", -- 2221. Where did this milk come from? (Other)
    "q2217_4", -- 2217. Where did this milk come from? (Other)
    "q2222_3", -- 2222. How did you give your child camel milk? (With food)
    "pbs_id", -- Household id
    "pf0_16", -- DERIVED: Percent females 0-16 years of age
    "pm30p", -- DERIVED: Percent males 30 years of age
    "ea", -- Unique enumeration area code
    "tlu", -- DERIVED: Tropical Livestock Unit
    "asset_index", -- DERIVED: Total Asset Ownership Index
    "hhae", -- DERIVED: Number of household adult equivalents
    "q2215", -- 2215. How much cow milk did your child take in the last week? (cups)
    "pastor_status", -- DERIVED: Pastoralist Status
    "q2218_1", -- 2218. How did you give your child goat milk? (Pure milk to drink)
    "pm0_16", -- DERIVED: Percent males 0-16 years of age
    "edmax_prim", -- DERIVED: Highest education level in hh: primary
    "q2221_2", -- 2221. Where did this milk come from? (Relative s animals)
    "q2219", -- 2219. How much goat milk did your child take in the last week? (cups)
    "q2209", -- 2209. Does child have edema?
    "woreda", -- Woreda
    "asset_ind_c_01", -- DERIVED: Total consumption assets owned, 0-100 scale
    "pf30p", -- DERIVED: Percent females 30 years of age
    "asset_ind_p", -- DERIVED: Total production assets owned
    "q2213_3", -- 2213. Where did this milk come from? (Bought)
    "com_hh_merge", -- Code to merge community and hh datasets
    "q2212", -- 2212. Do you give child cow milk to drink?
    "edmax_none_f", -- DERIVED: Highest education level of females in hh: none
    "q2220", -- 2220. Do you give child camel milk to drink
    "q2214_4", -- 2214. How did you give your child cow milk? (As yogurt)
    "child_number", -- Number of child within household
    "stratum", -- Survey strata
    "q2223", -- 2223. How much camel milk did your child take in the last week? (cups)
    "fem_only", -- DERIVED: Household with all adult females
    "q2217_3", -- 2217. Where did this milk come from? (Bought)
    "samplewt", -- DERIVED: sample weights
    "int_group", -- Intervention group
    "q2201", -- 2201. Caregiver s ID from Module 2
    "q2210", -- 2210. Weight in kilograms
    "q2203", -- 2203. Child s sex
    "edmax_none", -- DERIVED: Highest education level in hh: none
    "asset_poor", -- DERIVED: Asset poor corresponds to USD 1.25 poverty threshold
    "q2218_2" -- 2218. How did you give your child goat milk? (With tea)
FROM
    "usaid-gov/ethiopia-pastoralist-areas-resilience-improvement-ufe8-zncd:latest"."ethiopia_pastoralist_areas_resilience_improvement"
LIMIT 100;

Connecting to the DDN is easy. All you need is an existing SQL client that can connect to Postgres. As long as you have a SQL client ready, you'll be able to query usaid-gov/ethiopia-pastoralist-areas-resilience-improvement-ufe8-zncd with SQL in under 60 seconds.

This repository is an "external" repository. That means it's hosted elsewhere, in this case at data.usaid.gov. When you queryusaid-gov/ethiopia-pastoralist-areas-resilience-improvement-ufe8-zncd:latest on the DDN, we "mount" the repository using the socrata mount handler. The mount handler proxies your SQL query to the upstream data source, translating it from SQL to the relevant language (in this case SoQL).

We also cache query responses on the DDN, but we run the DDN on multiple nodes so a CACHE_HIT is only guaranteed for subsequent queries that land on the same node.

Query Your Local Engine

Install Splitgraph Locally
bash -c "$(curl -sL https://github.com/splitgraph/splitgraph/releases/latest/download/install.sh)"
 

Splitgraph Cloud is built around Splitgraph Core (GitHub), which includes a local Splitgraph Engine packaged as a Docker image. Splitgraph Cloud is basically a scaled-up version of that local Engine. When you query the Data Delivery Network or the REST API, we mount the relevant datasets in an Engine on our servers and execute your query on it.

It's possible to run this engine locally. You'll need a Mac, Windows or Linux system to install sgr, and a Docker installation to run the engine. You don't need to know how to actually use Docker; sgrcan manage the image, container and volume for you.

There are a few ways to ingest data into the local engine.

For external repositories (like this repository), the Splitgraph Engine can "mount" upstream data sources by using sgr mount. This feature is built around Postgres Foreign Data Wrappers (FDW). You can write custom "mount handlers" for any upstream data source. For an example, we blogged about making a custom mount handler for HackerNews stories.

For hosted datasets, where the author has pushed Splitgraph Images to the repository, you can "clone" and/or "checkout" the data using sgr cloneand sgr checkout.

Mounting Data

This repository is an external repository. It's not hosted by Splitgraph. It is hosted by data.usaid.gov, and Splitgraph indexes it. This means it is not an actual Splitgraph image, so you cannot use sgr clone to get the data. Instead, you can use the socrata adapter with the sgr mount command. Then, if you want, you can import the data and turn it into a Splitgraph image that others can clone.

First, install Splitgraph if you haven't already.

Mount the table with sgr mount

sgr mount socrata \
  "usaid-gov/ethiopia-pastoralist-areas-resilience-improvement-ufe8-zncd" \
  --handler-options '{
    "domain": "data.usaid.gov",
    "tables": {
        "ethiopia_pastoralist_areas_resilience_improvement": "ufe8-zncd"
    }
}'

That's it! Now you can query the data in the mounted table like any other Postgres table.

Query the data with your existing tools

Once you've loaded the data into your local Splitgraph engine, you can query it with any of your existing tools. As far as they're concerned, usaid-gov/ethiopia-pastoralist-areas-resilience-improvement-ufe8-zncd is just another Postgres schema.

Related Documentation: