我有两个MySQL表：
t_calibrator
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| id | id_calibrator | period | callast | calnext | organizer |
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| 1 | ST-0001 | 1 Year | 2016-12-30 | 2017-12-29 | LIPI |
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| 2 | ST-0002 | 6 Month | 2016-11-12 | 2017-05-11 | Kaliman |
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| 3 | ST-0003 | 6 Month | - | - | - |
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t_history
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| id | idcalibrator | purpose | sign |
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| 1 | ST-0001 | 2016-12-30 | LIPI |
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| 2 | ST-0002 | 2016-11-12 | Kaliman |
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| 3 | ST-0003 | 2017-01-13 | Delta | *new data
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| 4 | ST-0001 | 2017-01-10 | Delta | *new data
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其中id_calibrator = idcalibrator，callast = purpose和organizer = sign。如果我在表t_history中输入新数据，则表t_calibrator将会更新：
t_calibrator
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| id | id_calibrator | period | callast | calnext | organizer |
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| 1 | ST-0001 | 1 Year | 2017-01-10 | 2018-01-09 | Delta |
------------------------------------------------------------------------
| 2 | ST-0002 | 6 Month | 2016-11-12 | 2017-05-11 | Kaliman |
------------------------------------------------------------------------
| 3 | ST-0003 | 6 Month | 2017-01-13 | 2017-07-12 | Delta |
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我正在尝试创建一个触发器，但总是出错，需要帮助。