-- AlterTable
ALTER TABLE `Contract` ADD COLUMN `contractDurationId` INTEGER NULL;

-- CreateTable
CREATE TABLE `ContractDuration` (
    `id` INTEGER NOT NULL AUTO_INCREMENT,
    `code` VARCHAR(191) NOT NULL,
    `description` VARCHAR(191) NOT NULL,
    `isActive` BOOLEAN NOT NULL DEFAULT true,
    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updatedAt` DATETIME(3) NOT NULL,

    UNIQUE INDEX `ContractDuration_code_key`(`code`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- AddForeignKey
ALTER TABLE `Contract` ADD CONSTRAINT `Contract_contractDurationId_fkey` FOREIGN KEY (`contractDurationId`) REFERENCES `ContractDuration`(`id`) ON DELETE SET NULL ON UPDATE CASCADE;