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version()
5.6.51
Records: 3  Duplicates: 0  Warnings: 0
y
2020-06-03
2020-05-25
2020-04-13
y y t1.y - t2.y
2020-06-03 2020-06-03 0
2020-06-03 2020-05-25 78
2020-06-03 2020-04-13 190
2020-05-25 2020-06-03 -78
2020-05-25 2020-05-25 0
2020-05-25 2020-04-13 112
2020-04-13 2020-06-03 -190
2020-04-13 2020-05-25 -112
2020-04-13 2020-04-13 0