add

backend/futures_trade_record/sql/02_create_update_function.sql

@@ -4,4 +4,17 @@ BEGIN
     NEW.updated_at = CURRENT_TIMESTAMP;
     RETURN NEW;
 END;
-$$ LANGUAGE plpgsql VOLATILE;
+$$ LANGUAGE plpgsql VOLATILE;
+
+-- 创建自动格式化小数的函数（按需去除尾部多余0）
+CREATE OR REPLACE FUNCTION format_numeric_to_original(n NUMERIC)
+RETURNS TEXT AS $$
+BEGIN
+    -- 逻辑：如果是整数（小数部分全0），返回整数文本；否则返回去除尾部0的文本
+    IF n = TRUNC(n) THEN
+        RETURN TRUNC(n)::TEXT;  -- 整数场景：1.000000 → '1'
+    ELSE
+        RETURN TRIM(TRAILING '0' FROM TRIM(TRAILING '.' FROM n::TEXT));  -- 小数场景：1.230000 → '1.23'，1.002000 → '1.002'
+    END IF;
+END;
+$$ LANGUAGE plpgsql IMMUTABLE;  -- IMMUTABLE：相同输入返回相同输出，支持索引

backend/futures_trade_record/sql/04_create_variety_table.sql

@@ -165,8 +165,12 @@ BEGIN
         v.id AS variety_id,
         vn.name AS name,
         vc.code AS code,
-        vt.tick AS tick,
-        vtp.price AS tick_price
+        -- 调用格式化函数：自动去除尾部多余0
+        format_numeric_to_original(vt.tick) AS tick,
+        format_numeric_to_original(vtp.price) AS tick_price,
+        -- 可选：保留原始精度字段（供计算使用）
+        vt.tick AS tick_original,
+        vtp.price AS tick_price_original
     FROM
         variety v
     LEFT JOIN variety_name vn