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Chapter 18 psql commands updated

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anthonydb 2021-04-21 08:24:53 -04:00
parent 081e26bf46
commit 421ca2cf02
1 changed files with 22 additions and 15 deletions
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Chapter_18/psql_commands.txt
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@ -48,30 +48,36 @@ SELECT * FROM grades ORDER BY student_id, course_id;
-- Listing 18-7: Importing data using \copy -- Listing 18-7: Importing data using \copy
DROP TABLE state_regions; DELETE FROM state_regions;
CREATE TABLE state_regions (
st varchar(2) CONSTRAINT st_key PRIMARY KEY,
region varchar(20) NOT NULL
);
\copy state_regions FROM 'C:\YourDirectory\state_regions.csv' WITH (FORMAT CSV, HEADER); \copy state_regions FROM 'C:\YourDirectory\state_regions.csv' WITH (FORMAT CSV, HEADER);
-- Listing 18-8: Saving query output to a file
-- Listing 18-8:
DELETE FROM state_regions;
psql -d analysis -U postgres -c "COPY state_regions FROM STDIN WITH (FORMAT CSV, HEADER);" < state_regions.csv
-- Listing 18-9: Saving query output to a file
-- Enter psql settings -- Enter psql settings
\a \f , \pset footer \pset format csv
-- This will be the query -- This will be the query
SELECT * FROM grades; SELECT * FROM grades ORDER BY student_id, course_id;
-- Set psql to output results -- Set psql to output results
-- Note that Windows users must suppply forward slashes for -- Note that Windows users must supply forward slashes for
-- this command, which is opposite of normal use. -- this command, which is opposite of normal use.
\o 'C:/YourDirectory/query_output.csv' \o 'C:/YourDirectory/query_output.csv'
-- Run the query and output -- Run the query and output
SELECT * FROM grades; SELECT * FROM grades ORDER BY student_id, course_id;
-- ADDITIONAL COMMAND LINE UTILITIES
-- createdb: Create a database named box_office -- createdb: Create a database named box_office
@ -81,14 +87,15 @@ createdb -U postgres -e box_office
-- Changing user and database name -- Changing user and database name
\c [database name] [user name] \c [database name] [user name]
\c gis_analysis postgres \c box_office
\c box_office yourname
-- Loading shapefiles into PostgreSQL -- Loading shapefiles into PostgreSQL
-- For the US Census county shapefile in Chapter 14: -- For the US Census county shapefile in Chapter 14:
shp2pgsql -I -s 4269 -W Latin1 tl_2010_us_county10.shp us_counties_2010_shp | psql -d gis_analysis -U postgres shp2pgsql -I -s 4269 -W Latin1 tl_2019_us_county.shp us_counties_2019_shp | psql -d analysis -U postgres
-- For the Santa Fe roads and waterways shapfiles in Chapter 14: -- For the Santa Fe roads and waterways shapfiles in Chapter 14:
shp2pgsql -I -s 4269 tl_2016_35049_roads.shp santafe_roads_2016 | psql -d gis_analysis -U postgres shp2pgsql -I -s 4269 tl_2016_35049_roads.shp santafe_roads_2016 | psql -d analysis -U postgres
shp2pgsql -I -s 4269 tl_2016_35049_linearwater.shp santafe_linearwater_2016 | psql -d gis_analysis -U postgres shp2pgsql -I -s 4269 tl_2016_35049_linearwater.shp santafe_linearwater_2016 | psql -d analysis -U postgres