Add SQL (without test support)

This commit is contained in:
GradedJestRisk 2019-12-18 21:58:10 +01:00
parent 191926ce68
commit 84e17c448c
4 changed files with 105 additions and 0 deletions

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sql/README.md Normal file
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# Introduction
This code aims to be based on ISO-compliant, therefore database-agnostic.
However, Data Definition Language (DDL) usually involves vendor variants.
# Setup
Create database structure: see ./structure/<VARIANT>/create.sql
Load test data: see ./test/data/load.sql
# Execution
Execute SQL script: see /code/update_quality.sql
TODO: Introduce test framework - vendor specific

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UPDATE item
SET
quality = quality - 1
WHERE 1=1
AND ( name <> 'Aged Brie' AND name <> 'Backstage passes to a TAFKAL80ETC concert')
AND quality > 0
AND name <> 'Sulfuras, Hand of Ragnaros'
;
UPDATE item
SET
quality = quality + 1
WHERE 1=1
AND NOT ( name <> 'Aged Brie' AND name <> 'Backstage passes to a TAFKAL80ETC concert')
AND quality < 50
AND name = 'Backstage passes to a TAFKAL80ETC concert'
AND sellIn < 11
AND quality < 50
;
UPDATE item
SET
quality = quality + 1
WHERE 1=1
AND NOT ( name <> 'Aged Brie' AND name <> 'Backstage passes to a TAFKAL80ETC concert')
AND quality < 50
AND name = 'Backstage passes to a TAFKAL80ETC concert'
AND sellIn < 6
AND quality < 50
;
UPDATE item
SET
sellIn = sellIn - 1
WHERE 1=1
AND name <> 'Sulfuras, Hand of Ragnaros'
;
UPDATE item
SET
quality = quality - 1
WHERE 1=1
AND sellIn < 0
AND name <> 'Aged Brie'
AND name <> 'Backstage passes to a TAFKAL80ETC concert'
AND quality > 0
AND name <> 'Sulfuras, Hand of Ragnaros'
;
UPDATE item
SET
quality = quality - quality
WHERE 1=1
AND sellIn < 0
AND name <> 'Aged Brie'
AND NOT (name <> 'Backstage passes to a TAFKAL80ETC concert')
;
UPDATE item
SET
quality = quality + 1
WHERE 1=1
AND sellIn < 0
AND NOT (name <> 'Aged Brie')
AND quality < 50
AND name <> 'Sulfuras, Hand of Ragnaros'
;
COMMIT;

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CREATE DATABASE gilded_rose;
\connect gilded_rose;
CREATE TABLE item (
name CHARACTER VARYING(100) NOT NULL,
sellIn INTEGER,
quality INTEGER NOT NULL
);

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sql/test/data/load.sql Normal file
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DELETE FROM item;
INSERT INTO item (name, sellIn, quality) VALUES ('+5 Dexterity Vest', 10, 20);
INSERT INTO item (name, sellIn, quality) VALUES ('Aged Brie', 2, 0);
INSERT INTO item (name, sellIn, quality) VALUES ('Elixir of the Mongoose', 5, 7);
INSERT INTO item (name, sellIn, quality) VALUES ('Sulfuras, Hand of Ragnaros', 0, 80);
INSERT INTO item (name, sellIn, quality) VALUES ('Sulfuras, Hand of Ragnaros', -1, 80);
INSERT INTO item (name, sellIn, quality) VALUES ('Backstage passes to a TAFKAL80ETC concert', 15, 20);
INSERT INTO item (name, sellIn, quality) VALUES ('Backstage passes to a TAFKAL80ETC concert', 10, 49);
INSERT INTO item (name, sellIn, quality) VALUES ('Backstage passes to a TAFKAL80ETC concert', 5, 49);
-- this conjured item does not work properly yet
INSERT INTO item (name, sellIn, quality) VALUES ('Conjured Mana Cake', 3, 6);
COMMIT;