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Idioms and words
everything but the kitchen sink through thick and thin stowaway joust scrape the bottom of the ba...
Working with Dates and Times
Data Types for Dates and Times data type description timestamp records date and time times...
Statistical Functions in SQL
Correlation SELECT corr(med_hh_inc, pct_bach_higher) FROM acs_2014_2018_stats; corr --...
Modifying Data + Transactions
Modifying Tables with ALTER TABLE -- add a column ALTER TABLE table_name ADD COLUMN column_name d...
Primary Keys & Foreign Keys
Primary Keys Natural Keys CREATE TABLE natural_key_example ( license_id text CONSTRAINT license...
JOIN and Set Operators
JOIN Types Type Description JOIN =INNER JOIN, returns rows from both tables where matching...
Basic Math and Stats with SQL
Median with percentile functions CREATE TABLE percentile_test ( numbers integer ); INSER...
Importing and Exporting Data
Import COPY COPY table_name FROM `/var/lib/postgres/data/spot_qt.csv' with (format csv, header) ...
Creating Table
Creating a Table create table spot_qt( year int, qt int, revenue numeric,...
Pandas Part V: Data Loading, Storage, and File Formats
Reading and Writing Data in Text Format Function Description read_csv csv read_clipboard...
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