Add SQL query for average cost retrieval and generate TriggerLog model

prisma/migrations/20251213115515_init/migration.sql

@@ -0,0 +1,77 @@
+/*
+  Warnings:
+
+  - The primary key for the `Stock_Balance` table will be changed. If it partially fails, the table could be left without primary key constraint.
+  - You are about to alter the column `quantity` on the `Stock_Balance` table. The data in that column could be lost. The data in that column will be cast from `Decimal(10,2)` to `Decimal(14,3)`.
+  - You are about to alter the column `totalCost` on the `Stock_Balance` table. The data in that column could be lost. The data in that column will be cast from `Decimal(10,2)` to `Decimal(14,2)`.
+  - You are about to alter the column `avgCost` on the `Stock_Balance` table. The data in that column could be lost. The data in that column will be cast from `Decimal(10,2)` to `Decimal(14,2)`.
+  - A unique constraint covering the columns `[productId,inventoryId]` on the table `Stock_Balance` will be added. If there are existing duplicate values, this will fail.
+  - Added the required column `id` to the `Stock_Balance` table without a default value. This is not possible if the table is not empty.
+
+*/
+-- DropForeignKey
+ALTER TABLE `Stock_Balance` DROP FOREIGN KEY `Stock_Balance_inventoryId_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `Stock_Balance` DROP FOREIGN KEY `Stock_Balance_productId_fkey`;
+
+-- AlterTable
+ALTER TABLE `Products` ADD COLUMN `stockBalanceId` INTEGER NULL;
+
+-- AlterTable
+ALTER TABLE `Stock_Balance` DROP PRIMARY KEY,
+    ADD COLUMN `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+    ADD COLUMN `id` INTEGER NOT NULL AUTO_INCREMENT,
+    MODIFY `quantity` DECIMAL(14, 3) NOT NULL DEFAULT 0,
+    MODIFY `totalCost` DECIMAL(14, 2) NOT NULL DEFAULT 0,
+    MODIFY `updatedAt` DATETIME(3) NOT NULL,
+    MODIFY `avgCost` DECIMAL(14, 2) NOT NULL DEFAULT 0,
+    ADD PRIMARY KEY (`id`);
+
+-- CreateTable
+CREATE TABLE `Trigger_Logs` (
+    `id` INTEGER NOT NULL AUTO_INCREMENT,
+    `message` TEXT NOT NULL,
+    `createdAt` TIMESTAMP(0) NOT NULL DEFAULT CURRENT_TIMESTAMP(0),
+
+    PRIMARY KEY (`id`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- CreateTable
+CREATE TABLE `_StockBalance_product` (
+    `A` INTEGER NOT NULL,
+    `B` INTEGER NOT NULL,
+
+    UNIQUE INDEX `_StockBalance_product_AB_unique`(`A`, `B`),
+    INDEX `_StockBalance_product_B_index`(`B`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- CreateTable
+CREATE TABLE `_StockBalance_inventory` (
+    `A` INTEGER NOT NULL,
+    `B` INTEGER NOT NULL,
+
+    UNIQUE INDEX `_StockBalance_inventory_AB_unique`(`A`, `B`),
+    INDEX `_StockBalance_inventory_B_index`(`B`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- CreateIndex
+CREATE INDEX `Stock_Balance_productId_idx` ON `Stock_Balance`(`productId`);
+
+-- CreateIndex
+CREATE UNIQUE INDEX `Stock_Balance_productId_inventoryId_key` ON `Stock_Balance`(`productId`, `inventoryId`);
+
+-- AddForeignKey
+ALTER TABLE `_StockBalance_product` ADD CONSTRAINT `_StockBalance_product_A_fkey` FOREIGN KEY (`A`) REFERENCES `Products`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE `_StockBalance_product` ADD CONSTRAINT `_StockBalance_product_B_fkey` FOREIGN KEY (`B`) REFERENCES `Stock_Balance`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE `_StockBalance_inventory` ADD CONSTRAINT `_StockBalance_inventory_A_fkey` FOREIGN KEY (`A`) REFERENCES `Inventories`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE `_StockBalance_inventory` ADD CONSTRAINT `_StockBalance_inventory_B_fkey` FOREIGN KEY (`B`) REFERENCES `Stock_Balance`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- RenameIndex
+ALTER TABLE `Stock_Balance` RENAME INDEX `Stock_Balance_inventoryId_fkey` TO `Stock_Balance_inventoryId_idx`;