实现七月迭代公共技术基础

migrations/000166_create_system_config.up.sql

@@ -0,0 +1,22 @@
+-- 创建受控系统配置表；具体业务 Key 由所属业务模块注册，不在公共迁移中预置。
+CREATE TABLE tb_system_config (
+    id bigserial PRIMARY KEY,
+    config_key varchar(150) NOT NULL,
+    config_value text NOT NULL,
+    value_type varchar(20) NOT NULL,
+    module varchar(100) NOT NULL,
+    description varchar(500) NOT NULL,
+    is_readonly boolean NOT NULL DEFAULT false,
+    is_sensitive boolean NOT NULL DEFAULT false,
+    creator bigint NOT NULL DEFAULT 0,
+    updater bigint NOT NULL DEFAULT 0,
+    created_at timestamptz NOT NULL DEFAULT NOW(),
+    updated_at timestamptz NOT NULL DEFAULT NOW(),
+    CONSTRAINT uq_system_config_key UNIQUE (config_key),
+    CONSTRAINT ck_system_config_value_type CHECK (value_type IN ('string', 'int', 'bool', 'json'))
+);
+
+CREATE INDEX idx_system_config_module_key ON tb_system_config (module, config_key);
+
+COMMENT ON TABLE tb_system_config IS '受控系统配置表';
+COMMENT ON COLUMN tb_system_config.value_type IS '值类型 string/int/bool/json';