From 5632ee3f4ab0244960b23f1c9e8accbd90e131ee Mon Sep 17 00:00:00 2001
From: Lysenko Volodymyr <mr.volodumyr@gmail.com>
Date: Fri, 5 Jun 2026 21:48:09 +0200
Subject: [PATCH 1/4] Solution1

---
 .idea/.gitignore                              |  5 +++++
 .idea/inspectionProfiles/Project_Default.xml  | 18 ++++++++++++++++++
 .../inspectionProfiles/profiles_settings.xml  |  6 ++++++
 .idea/modules.xml                             |  8 ++++++++
 .idea/rda_task_3_transactions.iml             |  8 ++++++++
 .idea/vcs.xml                                 |  6 ++++++
 task.sql                                      | 19 ++++++++++++-------
 7 files changed, 63 insertions(+), 7 deletions(-)
 create mode 100644 .idea/.gitignore
 create mode 100644 .idea/inspectionProfiles/Project_Default.xml
 create mode 100644 .idea/inspectionProfiles/profiles_settings.xml
 create mode 100644 .idea/modules.xml
 create mode 100644 .idea/rda_task_3_transactions.iml
 create mode 100644 .idea/vcs.xml

diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..b58b603
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,5 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
new file mode 100644
index 0000000..c7bd4da
--- /dev/null
+++ b/.idea/inspectionProfiles/Project_Default.xml
@@ -0,0 +1,18 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="PyArgumentListInspection" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="PyPackageRequirementsInspection" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="ignoredPackages">
+        <list>
+          <option value="flake8" />
+          <option value="flake8-annotations" />
+          <option value="flake8-quotes" />
+          <option value="flake8-variables-names" />
+          <option value="pep8-naming" />
+          <option value="pytest" />
+        </list>
+      </option>
+    </inspection_tool>
+  </profile>
+</component>
\ No newline at end of file
diff --git a/.idea/inspectionProfiles/profiles_settings.xml b/.idea/inspectionProfiles/profiles_settings.xml
new file mode 100644
index 0000000..105ce2d
--- /dev/null
+++ b/.idea/inspectionProfiles/profiles_settings.xml
@@ -0,0 +1,6 @@
+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..d007c13
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/rda_task_3_transactions.iml" filepath="$PROJECT_DIR$/.idea/rda_task_3_transactions.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/rda_task_3_transactions.iml b/.idea/rda_task_3_transactions.iml
new file mode 100644
index 0000000..d0876a7
--- /dev/null
+++ b/.idea/rda_task_3_transactions.iml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/task.sql b/task.sql
index 8adf22b..fc31f90 100644
--- a/task.sql
+++ b/task.sql
@@ -1,11 +1,16 @@
--- Use our database
-USE ShopDB; 
+USE ShopDB;
 
--- Some data should be created outside the transaction (here)
+INSERT INTO Orders (CustomerID, Date)
+VALUES (1, '2023-01-01');
 
--- Start the transaction 
-START TRANSACTION; 
 
--- And some data should be created inside the transaction 
+START TRANSACTION;
 
-COMMIT; 
\ No newline at end of file
+INSERT INTO OrderItems (OrderID, ProductID)
+VALUES (1, 1);
+
+UPDATE Products
+SET WarehouseAmount = WarehouseAmount - 1
+WHERE ID = 1;
+
+COMMIT;

From 12ddf591fc9df7f2e54f9887233b9fe213bd0394 Mon Sep 17 00:00:00 2001
From: Lysenko Volodymyr <mr.volodumyr@gmail.com>
Date: Fri, 5 Jun 2026 21:57:56 +0200
Subject: [PATCH 2/4] Solution2

---
 task.sql | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/task.sql b/task.sql
index fc31f90..a97db5a 100644
--- a/task.sql
+++ b/task.sql
@@ -3,14 +3,13 @@ USE ShopDB;
 INSERT INTO Orders (CustomerID, Date)
 VALUES (1, '2023-01-01');
 
-
 START TRANSACTION;
 
-INSERT INTO OrderItems (OrderID, ProductID)
-VALUES (1, 1);
+INSERT INTO OrderItems (OrderID, ProductID, Count)
+VALUES (LAST_INSERT_ID(), 1, 1);
 
 UPDATE Products
 SET WarehouseAmount = WarehouseAmount - 1
 WHERE ID = 1;
 
-COMMIT;
+COMMIT;
\ No newline at end of file

From c07fb5a105b48c05e0032f179d894e4facce4be8 Mon Sep 17 00:00:00 2001
From: Lysenko Volodymyr <mr.volodumyr@gmail.com>
Date: Sun, 7 Jun 2026 17:16:02 +0200
Subject: [PATCH 3/4] Solution3

---
 .gitignore                                     |  3 +++
 .idea/.gitignore                               |  5 -----
 .idea/inspectionProfiles/Project_Default.xml   | 18 ------------------
 .idea/inspectionProfiles/profiles_settings.xml |  6 ------
 .idea/modules.xml                              |  8 --------
 .idea/rda_task_3_transactions.iml              |  8 --------
 .idea/vcs.xml                                  |  6 ------
 task.sql                                       |  4 ++--
 8 files changed, 5 insertions(+), 53 deletions(-)
 create mode 100644 .gitignore
 delete mode 100644 .idea/.gitignore
 delete mode 100644 .idea/inspectionProfiles/Project_Default.xml
 delete mode 100644 .idea/inspectionProfiles/profiles_settings.xml
 delete mode 100644 .idea/modules.xml
 delete mode 100644 .idea/rda_task_3_transactions.iml
 delete mode 100644 .idea/vcs.xml

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..5d51d6c
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+.idea/
+*.iml
+.DS_Store
diff --git a/.idea/.gitignore b/.idea/.gitignore
deleted file mode 100644
index b58b603..0000000
--- a/.idea/.gitignore
+++ /dev/null
@@ -1,5 +0,0 @@
-# Default ignored files
-/shelf/
-/workspace.xml
-# Editor-based HTTP Client requests
-/httpRequests/
diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
deleted file mode 100644
index c7bd4da..0000000
--- a/.idea/inspectionProfiles/Project_Default.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<component name="InspectionProjectProfileManager">
-  <profile version="1.0">
-    <option name="myName" value="Project Default" />
-    <inspection_tool class="PyArgumentListInspection" enabled="false" level="WARNING" enabled_by_default="false" />
-    <inspection_tool class="PyPackageRequirementsInspection" enabled="true" level="WARNING" enabled_by_default="true">
-      <option name="ignoredPackages">
-        <list>
-          <option value="flake8" />
-          <option value="flake8-annotations" />
-          <option value="flake8-quotes" />
-          <option value="flake8-variables-names" />
-          <option value="pep8-naming" />
-          <option value="pytest" />
-        </list>
-      </option>
-    </inspection_tool>
-  </profile>
-</component>
\ No newline at end of file
diff --git a/.idea/inspectionProfiles/profiles_settings.xml b/.idea/inspectionProfiles/profiles_settings.xml
deleted file mode 100644
index 105ce2d..0000000
--- a/.idea/inspectionProfiles/profiles_settings.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<component name="InspectionProjectProfileManager">
-  <settings>
-    <option name="USE_PROJECT_PROFILE" value="false" />
-    <version value="1.0" />
-  </settings>
-</component>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
deleted file mode 100644
index d007c13..0000000
--- a/.idea/modules.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/.idea/rda_task_3_transactions.iml" filepath="$PROJECT_DIR$/.idea/rda_task_3_transactions.iml" />
-    </modules>
-  </component>
-</project>
\ No newline at end of file
diff --git a/.idea/rda_task_3_transactions.iml b/.idea/rda_task_3_transactions.iml
deleted file mode 100644
index d0876a7..0000000
--- a/.idea/rda_task_3_transactions.iml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module type="PYTHON_MODULE" version="4">
-  <component name="NewModuleRootManager">
-    <content url="file://$MODULE_DIR$" />
-    <orderEntry type="inheritedJdk" />
-    <orderEntry type="sourceFolder" forTests="false" />
-  </component>
-</module>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
deleted file mode 100644
index 35eb1dd..0000000
--- a/.idea/vcs.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="" vcs="Git" />
-  </component>
-</project>
\ No newline at end of file
diff --git a/task.sql b/task.sql
index a97db5a..4bbb623 100644
--- a/task.sql
+++ b/task.sql
@@ -1,10 +1,10 @@
 USE ShopDB;
 
+START TRANSACTION;
+
 INSERT INTO Orders (CustomerID, Date)
 VALUES (1, '2023-01-01');
 
-START TRANSACTION;
-
 INSERT INTO OrderItems (OrderID, ProductID, Count)
 VALUES (LAST_INSERT_ID(), 1, 1);
 

From 483174413e10b3470a9742ec25187185117ce65b Mon Sep 17 00:00:00 2001
From: Lysenko Volodymyr <mr.volodumyr@gmail.com>
Date: Sun, 7 Jun 2026 17:27:01 +0200
Subject: [PATCH 4/4] Solution4

---
 task.sql | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/task.sql b/task.sql
index 4bbb623..a97db5a 100644
--- a/task.sql
+++ b/task.sql
@@ -1,10 +1,10 @@
 USE ShopDB;
 
-START TRANSACTION;
-
 INSERT INTO Orders (CustomerID, Date)
 VALUES (1, '2023-01-01');
 
+START TRANSACTION;
+
 INSERT INTO OrderItems (OrderID, ProductID, Count)
 VALUES (LAST_INSERT_ID(), 1, 1);