From f9072555df305902e1cd343bf916d99a3a79026b Mon Sep 17 00:00:00 2001 From: anthonydb Date: Fri, 20 Aug 2021 12:29:11 -0400 Subject: [PATCH] Chapter 10 code/listing formatting --- Chapter_10/Chapter_10.sql | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/Chapter_10/Chapter_10.sql b/Chapter_10/Chapter_10.sql index 633338f..303127e 100644 --- a/Chapter_10/Chapter_10.sql +++ b/Chapter_10/Chapter_10.sql @@ -141,7 +141,7 @@ ALTER TABLE meat_poultry_egg_establishments ADD COLUMN company_standard text; UPDATE meat_poultry_egg_establishments SET company_standard = company; --- Listing 10-14: Use UPDATE to modify column values that match a string +-- Listing 10-14: Using an UPDATE statement to modify column values that match a string UPDATE meat_poultry_egg_establishments SET company_standard = 'Armour-Eckrich Meats' @@ -197,16 +197,16 @@ FROM meat_poultry_egg_establishments GROUP BY st, inspection_deadline ORDER BY st; --- Listing 10-21: Delete rows matching an expression +-- Listing 10-21: Deleting rows matching an expression DELETE FROM meat_poultry_egg_establishments WHERE st IN('AS','GU','MP','PR','VI'); --- Listing 10-22: Remove a column from a table using DROP +-- Listing 10-22: Removing a column from a table using DROP ALTER TABLE meat_poultry_egg_establishments DROP COLUMN zip_copy; --- Listing 10-23: Remove a table from a database using DROP +-- Listing 10-23: Removing a table from a database using DROP DROP TABLE meat_poultry_egg_establishments_backup; @@ -252,8 +252,11 @@ FROM meat_poultry_egg_establishments; -- Listing 10-26: Swapping table names using ALTER TABLE -ALTER TABLE meat_poultry_egg_establishments RENAME TO meat_poultry_egg_establishments_temp; -ALTER TABLE meat_poultry_egg_establishments_backup RENAME TO meat_poultry_egg_establishments; -ALTER TABLE meat_poultry_egg_establishments_temp RENAME TO meat_poultry_egg_establishments_backup; +ALTER TABLE meat_poultry_egg_establishments + RENAME TO meat_poultry_egg_establishments_temp; +ALTER TABLE meat_poultry_egg_establishments_backup + RENAME TO meat_poultry_egg_establishments; +ALTER TABLE meat_poultry_egg_establishments_temp + RENAME TO meat_poultry_egg_establishments_backup;