diff --git a/1-sql/2026-03-12/simulation_app_repository.sql b/1-sql/2026-03-12/simulation_app_repository.sql
new file mode 100644
index 00000000..a803f9e2
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+++ b/1-sql/2026-03-12/simulation_app_repository.sql
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+ALTER TABLE `simulation_app_repository` MODIFY COLUMN `createTime` timestamp NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '应用创建时间' AFTER `creator`;
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