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prd/db/alter_erp_mp_mbom_add_issue_date.sql

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+-- ============================================================
+-- erp_mp_mbom 表增加下发时间字段
+-- 下发时间: issue_date，用于记录物料清单下发车间的时间
+-- 生成日期: 2026-02-13
+-- ============================================================
+
+SET NAMES utf8mb4;
+
+DROP PROCEDURE IF EXISTS `proc_add_column_if_not_exists`;
+
+DELIMITER //
+CREATE PROCEDURE `proc_add_column_if_not_exists`(
+    IN p_table_name VARCHAR(64),
+    IN p_column_name VARCHAR(64),
+    IN p_column_definition VARCHAR(500)
+)
+BEGIN
+    DECLARE v_count INT DEFAULT 0;
+    SELECT COUNT(*) INTO v_count
+    FROM information_schema.COLUMNS
+    WHERE TABLE_SCHEMA = DATABASE()
+      AND TABLE_NAME = p_table_name
+      AND COLUMN_NAME = p_column_name;
+    IF v_count = 0 THEN
+        SET @sql = CONCAT('ALTER TABLE `', p_table_name, '` ADD COLUMN `', p_column_name, '` ', p_column_definition);
+        PREPARE stmt FROM @sql;
+        EXECUTE stmt;
+        DEALLOCATE PREPARE stmt;
+    END IF;
+END //
+DELIMITER ;
+
+CALL proc_add_column_if_not_exists('erp_mp_mbom', 'issue_date', "datetime DEFAULT NULL COMMENT '下发时间'");
+
+DROP PROCEDURE IF EXISTS `proc_add_column_if_not_exists`;