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# Tasks which require writing SQL queries
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- [ 00. Теоретические вопросы] ( 00.sql )
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- - [ 00.1 Для чего having в SQL запросе?] ( 00.sql )
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- - [ 00.2 Альтернативные названия INNER JOIN] ( 00.sql )
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+ - [ 00.1 Для чего having в SQL запросе?] ( 00.sql )
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+ - [ 00.2 Альтернативные названия INNER JOIN] ( 00.sql )
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- [ 01. Задача про студентов и их оценки] ( 01.sql )
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- [ 02. Определить, сколько строк будет получено в результате запроса] ( 02.sql )
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- [ 03. Поиск отделов, суммарная зарплата сотрудников в которых больше заданной] ( 03.sql )
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# Birds farm
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Add the missing code to Chicken and Egg so the following actions are completed:
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- Chicken implements the IBird base class.
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- A Chicken lays an egg that will hatch into a new Chicken.
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- Eggs from other types of birds should hatch into a new bird of their parent type.
@@ -33,6 +34,7 @@ class Egg {
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```
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Tests:
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- Chicken is an IBird
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- Chickens make other chickens
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- Other birds don't make chickens
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We have initial code (see below). Implement required TODOs
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``` java
@@ -84,10 +83,12 @@ public class FurnitureOrder implements FurnitureOrderInterface {
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```
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Use next tests to check validity:
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- [ FurnitureOrderFirstTest] ( ../../../../../../test/java/by/andd3dfx/common/furniture/FurnitureOrderFirstTest.java )
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- [ FurnitureOrderSecondTest] ( ../../../../../../test/java/by/andd3dfx/common/furniture/FurnitureOrderSecondTest.java )
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``` java
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@FixMethodOrder (MethodSorters . NAME_ASCENDING )
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public class FurnitureOrderFirstTest {
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Провести рефакторинг 3-х классов:
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``` java
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public class Event {
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private final String type;
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# Устойчивость сортировок
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| Сортировка | Устойчивость |
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