PostGIS
Name
Loader_Generate_Nation_Script — Generates a shell script for the specified platform that loads in the county and state lookup tables.
Description
Generates a shell script for the specified platform that loads in the
county_all, county_all_lookup, state_all tables into
tiger_data schema. These inherit respectively from the county,
county_lookup, state tables in tiger schema.
It uses unzip on Linux (7-zip on Windows by default) and wget to do the downloading. It uses Section 4.7.2, “Using the Shapefile Loader” to load in the data.
It uses the following control tables tiger.loader_platform,
tiger.loader_variables, and tiger.loader_lookuptables to control
the process and different OS shell syntax variations.
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loader_variableskeeps track of various variables such as census site, year, data and staging schemas -
loader_platformprofiles of various platforms and where the various executables are located. Comes with windows and linux/unix. More can be added. -
loader_lookuptableseach record defines a kind of table (state, county), whether to process records in it and how to load them in. Defines the steps to import data, stage data, add, removes columns, indexes, and constraints for each. Each table is prefixed with the state and inherits from a table in the tiger schema. e.g. createstiger_data.ma_faceswhich inherits fromtiger.faces
Enhanced: 2.4.1 zip code 5 tabulation area (zcta5) load step was fixed and when enabled, zcta5 data is loaded as a single table called zcta5_all as part of the nation script load.
Availability: 2.1.0
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Examples
Generate script script to load nation data Windows.
SELECT loader_generate_nation_script('windows');Generate script to load up data for Linux/Unix systems.
SELECT loader_generate_nation_script('sh');