sonomacounty-ca-gov/defaulted-tax-data-bp8v-uax7
Icon for Socrata external plugin

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 protocol. 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 defaulted_tax_data table in this repository, by referencing it like:

"sonomacounty-ca-gov/defaulted-tax-data-bp8v-uax7:latest"."defaulted_tax_data"

or in a full query, like:

SELECT
    ":id", -- Socrata column ID
    "mailaddress3", -- Address line 2 when MailAddress1 is C/O or DBA.  In all other cases City, State, zip
    "mailaddress2", -- Address line 2 except when MailAddress1 is C/O or DBA.  
    "location_city_state", -- The city state location of the property.
    "redeemed_date", -- Date default record is payed.
    "base_tax_amount", -- Total tax amount for the 2nd installment.  
    "billedmarketlandvalue", -- Bill value. If an original bill, amount represents total value. If original bill is paid, amount represents net change.  If reassessment results in a lower value, amount shown could be negative.
    "tax_rate_area", -- The original tax rate area for a delinquent assessment.
    "originating_assessment_number", -- The original assessment number on parcel splits.
    "originating_assessment", -- The parcel that originated the tax bill.
    "assessment_number", -- 1st 3 Characters = Book, 2nd 3 Characters = Page, 3rd 3 Characters = Parcel, 4th 3 Characters = Sub Parcel
    "billedfixedimprvalue", -- Assessment billed for fixed improvements value on property.
    "taxability", -- Code = Description, 0 =  Normal Ownership,  1 =   Business, Ownership,  2 =  Zero Value Property,  10 =  Senior Citizens Postponement,  12 =  Low Value Real Property,  34 =  Taxable Gov’t Entity Section 11,   44 =  Gov’t Restricted Affordable Housing,  50 =  Property Under CLCA,  51 =  Property under CLCA/Business,  60 =  Tax Postponed (Sr Citizens Postponement),  70 =  Common Area,  600 =  Timber Preserve,  800 =  Prop 8 Reduction-Manual,  801 =  Prop 8 Reduction w Bus/Manual,  850 =  Prop 8 w/Contract CLCA,  860 =  Prop 8 Tax Postponed,  870 =  Prop 8 Value Uploaded,  871 =  Prop 8 Automatic Reduction w/business 
    "fullredemptionpaid", -- Prior year taxes paid.
    "secured_delinq_penality_amt_paid", -- The interest calculated for assessment from July 1st of the fiscal year through paid as of date.
    "exemption_code1", -- Code = Description,  E01 =  Homeowner,  E04 =  Disabled Vet Spouse 100,000,  E06 =  Disabled Vet 100,000,  E08 =  Welfare-Charitable,  E16 =  Cemetery,  E17 =  Church,  E18 =  Free Museum/Library,  E21 =  Public School,  E22 =  Religious-One Time Filing,  E97 =  Hox Penalty (used for roll corrections),  E99 =  Low Value 
    "billedpersonalpropmhvalue", -- he billed amount of personal property mobile home value on the assessment.
    "billedgrowingimprvalue", -- Assessment billed for agricultural improvements value on property.
    "taxyear", -- Tax rate year.
    "defaultamt", -- 1st year of defaulted tax and penalties. Base Tax amount + Ten Percent Penalty + Cost Charge
    "collection_code2", -- Set when payment is recorded.
    "billednetvalue", -- The billed net value of the assessment.
    "billedpersonalpropvalue", -- The billed amount of personal property value on the assessment.
    "exemption_amount2", -- The amount of the exemption
    "mailaddress4", -- Address line 3 when MailAddr1 is C/O or DBA.
    "paid_amount", -- This represents the tax amount paid - Base_Tax_Amount + Ten_Percent_Penalty_Amount (if paid) + Cost_Charge (if paid) for redemptions.
    "mailaddress1", -- Address line 1 or C/O or DBA (Doing Business As)
    "isagpreserve", -- The property is an agricultural preserve.
    "default_date", -- The date the assessment defaulted.
    "assessment_roll_year", -- The year the bill was placed on the tax roll.
    "ten_percent_penality_amount", -- Penalty amount for the Base_Tax_Amount. Always set, delinquent or not.
    "exemption_amount1", -- The amount of the exemption.  
    "billedstructuralimprvalue", -- Assessment billed for structural improvements value on property.
    "defaultnum", -- Systematically assigned number for secured records that go unpaid past their fiscal year.
    "location_address", -- The street address location of the property.
    "redemption_fee",
    "bill_date", -- The date the bill was printed.
    "exemption_code2", -- Code = Description,  E01 =  Homeowner,  E04 =  Disabled Vet Spouse 100,000,  E06 =  Disabled Vet 100,000,  E08 =  Welfare-Charitable,  E16 =  Cemetery,  E17 =  Church,  E18 =  Free Museum/Library,  E21 =  Public School,  E22 =  Religious-One Time Filing,  E97 =  Hox Penalty (used for roll corrections),  E99 =  Low Value 
    "feeparcel", -- The parcel where the assessment is located.
    "existsbankruptcy", -- A bankruptcy exists on the assessment.
    "cost_charge", -- Second installment penalty cost charge.
    "redemptiontotalfees", -- Total redemption fees paid.
    "salenoticedate" -- When property becomes 5 years delinquent and the tax collector records the power to sell.  
FROM
    "sonomacounty-ca-gov/defaulted-tax-data-bp8v-uax7:latest"."defaulted_tax_data"
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 sonomacounty-ca-gov/defaulted-tax-data-bp8v-uax7 with SQL in under 60 seconds.

This repository is an "external" repository. That means it's hosted elsewhere, in this case at data.sonomacounty.ca.gov. When you querysonomacounty-ca-gov/defaulted-tax-data-bp8v-uax7: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)"
 

Read the installation docs.

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.sonomacounty.ca.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 \
  "sonomacounty-ca-gov/defaulted-tax-data-bp8v-uax7" \
  --handler-options '{
    "domain": "data.sonomacounty.ca.gov",
    "tables": {
        "defaulted_tax_data": "bp8v-uax7"
    }
}'

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, sonomacounty-ca-gov/defaulted-tax-data-bp8v-uax7 is just another Postgres schema.