| -<\/TD> | The estimate could not be computed because there were an insufficient number of sample observations. For a ratio of medians estimate, one or both of the median estimates falls in the lowest interval or highest interval of an open-ended distribution. For a 5-year median estimate, the margin of error associated with a median was larger than the median itself.<\/TD><\/TR> |
| N<\/TD> | The estimate or margin of error cannot be displayed because there were an insufficient number of sample cases in the selected geographic area.<\/TD><\/TR> |
| (X)<\/TD> | The estimate or margin of error is not applicable or not available.<\/TD><\/TR> |
| median-<\/TD> | The median falls in the lowest interval of an open-ended distribution (for example \"2,500-\")<\/TD><\/TR> |
| median+<\/TD> | The median falls in the highest interval of an open-ended distribution (for example \"250,000+\").<\/TD><\/TR> |
| **<\/TD> | The margin of error could not be computed because there were an insufficient number of sample observations.<\/TD><\/TR> |
| ***<\/TD> | The margin of error could not be computed because the median falls in the lowest interval or highest interval of an open-ended distribution.<\/TD><\/TR> |
| *****<\/TD> | A margin of error is not appropriate because the corresponding estimate is controlled to an independent population or housing estimate. Effectively, the corresponding estimate has no sampling error and the margin of error may be treated as zero.<\/TD><\/TR><\/TABLE> + +------------------------------------------------------------------------------------------------------------- + +============================================================================================================= +Additional Information +============================================================================================================= + +Contact Information + + Contact the Census Bureau Customer Help Center at 1-800-923-8282 or submit a question at ask.census.gov. + +------------------------------------------------------------------------------------------------------------- + +Suggested Citation + + U.S. Census Bureau. \"Demographic Characteristics for Occupied Housing Units\" American Community Survey, ACS 1-Year Estimates Subject Tables, Table S2502, 2024, https://data.census.gov/table/ACSST1Y2024.S2502?q=S2502: Accessed on January 02, 2026. + +------------------------------------------------------------------------------------------------------------- diff --git a/ch04/README.md b/ch04/README.md new file mode 100644 index 0000000..75139a7 --- /dev/null +++ b/ch04/README.md @@ -0,0 +1,3 @@ +This folder includes code and data used in [chapter 4 of PostgreSQL: Up and Running, 4th Edition](https://www.oreilly.com/library/view/postgresql-up-and/9798341660885/ch04.html) + +* The folder *ACSST1Y2024.S2502_2026-01-02T144528* was exported from link [State Housing Demographics](https://data.census.gov/table?q=S2502:+Demographic+Characteristics+for+Occupied+Housing+Units&g=040XX00US01,02,04,05,06,08,09,10,11,12,13,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,44,45,46,47,48,49,50,51,53,54,55,56,72) \ No newline at end of file diff --git a/ch04/build_stage.psql b/ch04/build_stage.psql new file mode 100644 index 0000000..6d207e9 --- /dev/null +++ b/ch04/build_stage.psql @@ -0,0 +1,12 @@ +\a +\t +\cd /temp +\g create_script.sql +CREATE SCHEMA IF NOT EXISTS staging; +SELECT 'CREATE TABLE staging.factfinder_import(geo_id varchar(255) + , geo_id2 varchar(255), geo_display varchar(255) + , '|| array_to_string(array_agg('s' || lpad(i::text,2, '0') + || ' varchar(255), s' || lpad(i::text,2, '0') || '_perc varchar(255) ' ), ',') || ');' As create_sql +FROM generate_series(1,51) As i +\g create_script.sql +\i create_script.sql \ No newline at end of file |