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Merge pull request #135 from GradedJestRisk/master
Add PL/pg SQL (without test support)
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Emily Bache
GitHub
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11
plpgsql/README.md
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11
plpgsql/README.md
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# Setup
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Create database structure: psql -f ./structure/create.sql
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Load code into database psql -f ./code/update_quality.sql -d gilded_rose
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Load test data into database: psql -f ./test/data/load.sql -d gilded_rose
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Execute: CALL update_quality();
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Check results: SELECT * FROM items;
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# Test
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No test code provided, only a sample of test data
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TODO: [https://pgtap.org/](introduce TAP - xUnit for PL/pg SQL)
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80
plpgsql/code/update_quality.sql
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80
plpgsql/code/update_quality.sql
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CREATE OR REPLACE PROCEDURE public.update_quality()
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LANGUAGE plpgsql
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AS $$
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DECLARE
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rec_item RECORD;
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cur_items CURSOR FOR SELECT * FROM item;
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BEGIN
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OPEN cur_items;
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LOOP
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FETCH cur_items INTO rec_item;
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EXIT WHEN NOT FOUND;
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IF (rec_item.name <> 'Aged Brie' AND rec_item.name <> 'Backstage passes to a TAFKAL80ETC concert') THEN
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IF (rec_item.quality > 0) THEN
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IF (rec_item.name <> 'Sulfuras, Hand of Ragnaros') THEN
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rec_item.quality = rec_item.quality - 1;
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END IF;
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END IF;
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ELSE
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IF (rec_item.quality < 50) THEN
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rec_item.quality = rec_item.quality + 1;
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IF (rec_item.name = 'Backstage passes to a TAFKAL80ETC concert') THEN
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IF (rec_item.sellIn < 11) THEN
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IF (rec_item.quality < 50) THEN
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rec_item.quality = rec_item.quality + 1;
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END IF;
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END IF;
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IF (rec_item.sellIn < 6) THEN
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IF (rec_item.quality < 50) THEN
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rec_item.quality = rec_item.quality + 1;
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END IF;
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END IF;
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END IF;
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END IF;
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END IF;
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IF (rec_item.name <> 'Sulfuras, Hand of Ragnaros') THEN
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rec_item.sellIn = rec_item.sellIn - 1;
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END IF;
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IF (rec_item.sellIn < 0) THEN
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IF (rec_item.name <> 'Aged Brie') THEN
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IF (rec_item.name <> 'Backstage passes to a TAFKAL80ETC concert') THEN
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IF (rec_item.quality > 0) THEN
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IF (rec_item.name <> 'Sulfuras, Hand of Ragnaros') THEN
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rec_item.quality = rec_item.quality - 1;
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END IF;
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END IF;
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ELSE
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rec_item.quality = rec_item.quality - rec_item.quality;
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END IF;
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ELSE
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IF (rec_item.quality < 50) THEN
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rec_item.quality = rec_item.quality + 1;
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END IF;
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END IF;
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END IF;
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UPDATE item
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SET
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quality = rec_item.quality,
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sellIn = rec_item.sellIn
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WHERE
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name = rec_item.name;
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END LOOP;
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CLOSE cur_items;
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COMMIT;
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END;
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$$
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9
plpgsql/structure/create.sql
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9
plpgsql/structure/create.sql
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CREATE DATABASE gilded_rose;
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\connect gilded_rose;
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CREATE TABLE item (
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name CHARACTER VARYING(100) NOT NULL,
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sellIn INTEGER,
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quality INTEGER NOT NULL
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);
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17
plpgsql/test/data/load.sql
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plpgsql/test/data/load.sql
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\set AUTOCOMMIT off
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TRUNCATE TABLE item;
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INSERT INTO item (name, sellIn, quality) VALUES ('+5 Dexterity Vest', 10, 20);
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INSERT INTO item (name, sellIn, quality) VALUES ('Aged Brie', 2, 0);
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INSERT INTO item (name, sellIn, quality) VALUES ('Elixir of the Mongoose', 5, 7);
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INSERT INTO item (name, sellIn, quality) VALUES ('Sulfuras, Hand of Ragnaros', 0, 80);
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INSERT INTO item (name, sellIn, quality) VALUES ('Sulfuras, Hand of Ragnaros', -1, 80);
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INSERT INTO item (name, sellIn, quality) VALUES ('Backstage passes to a TAFKAL80ETC concert', 15, 20);
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INSERT INTO item (name, sellIn, quality) VALUES ('Backstage passes to a TAFKAL80ETC concert', 10, 49);
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INSERT INTO item (name, sellIn, quality) VALUES ('Backstage passes to a TAFKAL80ETC concert', 5, 49);
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-- this conjured item does not work properly yet
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INSERT INTO item (name, sellIn, quality) VALUES ('Conjured Mana Cake', 3, 6);
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COMMIT;
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12
sql/README.md
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sql/README.md
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# Introduction
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This code aims to be based on ISO-compliant, therefore database-agnostic.
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However, Data Definition Language (DDL) usually involves vendor variants.
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# Setup
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Create database structure: see ./structure/<VARIANT>/create.sql
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Load test data: see ./test/data/load.sql
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# Execution
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Execute SQL script: see /code/update_quality.sql
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TODO: Introduce test framework - vendor specific
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69
sql/code/update_quality.sql
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69
sql/code/update_quality.sql
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UPDATE item
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SET
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quality = quality - 1
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WHERE 1=1
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AND ( name <> 'Aged Brie' AND name <> 'Backstage passes to a TAFKAL80ETC concert')
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AND quality > 0
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AND name <> 'Sulfuras, Hand of Ragnaros'
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;
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UPDATE item
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SET
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quality = quality + 1
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WHERE 1=1
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AND NOT ( name <> 'Aged Brie' AND name <> 'Backstage passes to a TAFKAL80ETC concert')
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AND quality < 50
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AND name = 'Backstage passes to a TAFKAL80ETC concert'
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AND sellIn < 11
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AND quality < 50
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;
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UPDATE item
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SET
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quality = quality + 1
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WHERE 1=1
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AND NOT ( name <> 'Aged Brie' AND name <> 'Backstage passes to a TAFKAL80ETC concert')
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AND quality < 50
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AND name = 'Backstage passes to a TAFKAL80ETC concert'
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AND sellIn < 6
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AND quality < 50
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;
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UPDATE item
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SET
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sellIn = sellIn - 1
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WHERE 1=1
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AND name <> 'Sulfuras, Hand of Ragnaros'
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;
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UPDATE item
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SET
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quality = quality - 1
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WHERE 1=1
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AND sellIn < 0
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AND name <> 'Aged Brie'
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AND name <> 'Backstage passes to a TAFKAL80ETC concert'
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AND quality > 0
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AND name <> 'Sulfuras, Hand of Ragnaros'
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;
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UPDATE item
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SET
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quality = quality - quality
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WHERE 1=1
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AND sellIn < 0
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AND name <> 'Aged Brie'
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AND NOT (name <> 'Backstage passes to a TAFKAL80ETC concert')
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;
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UPDATE item
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SET
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quality = quality + 1
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WHERE 1=1
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AND sellIn < 0
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AND NOT (name <> 'Aged Brie')
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AND quality < 50
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AND name <> 'Sulfuras, Hand of Ragnaros'
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;
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COMMIT;
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9
sql/structure/postgreSQL/create.sql
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9
sql/structure/postgreSQL/create.sql
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CREATE DATABASE gilded_rose;
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\connect gilded_rose;
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CREATE TABLE item (
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name CHARACTER VARYING(100) NOT NULL,
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sellIn INTEGER,
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quality INTEGER NOT NULL
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);
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15
sql/test/data/load.sql
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15
sql/test/data/load.sql
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DELETE FROM item;
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INSERT INTO item (name, sellIn, quality) VALUES ('+5 Dexterity Vest', 10, 20);
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INSERT INTO item (name, sellIn, quality) VALUES ('Aged Brie', 2, 0);
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INSERT INTO item (name, sellIn, quality) VALUES ('Elixir of the Mongoose', 5, 7);
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INSERT INTO item (name, sellIn, quality) VALUES ('Sulfuras, Hand of Ragnaros', 0, 80);
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INSERT INTO item (name, sellIn, quality) VALUES ('Sulfuras, Hand of Ragnaros', -1, 80);
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INSERT INTO item (name, sellIn, quality) VALUES ('Backstage passes to a TAFKAL80ETC concert', 15, 20);
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INSERT INTO item (name, sellIn, quality) VALUES ('Backstage passes to a TAFKAL80ETC concert', 10, 49);
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INSERT INTO item (name, sellIn, quality) VALUES ('Backstage passes to a TAFKAL80ETC concert', 5, 49);
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-- this conjured item does not work properly yet
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INSERT INTO item (name, sellIn, quality) VALUES ('Conjured Mana Cake', 3, 6);
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COMMIT;
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