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小结: 1、block diagonal matrix 直和 块对角矩阵 A block diagonal matrix is a block matrix that is a square matrix, and having main diagonal blocks square matrice 阅读全文
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1、唯一键必须包含分区函数中的所有字段;主键是唯一键的一种; A PRIMARY KEY must include all columns in the table's partitioning function 22.6.1 Partitioning Keys, Primary Keys, and 阅读全文
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# https://dev.mysql.com/doc/refman/5.6/en/partitioning-columns-range.html'''CREATE TABLE employees ( id INT NOT NULL, fname VARCHAR(30), lname VARCHAR(30), hired DATE NOT NULL DEFAULT '1... 阅读全文
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https://dev.mysql.com/doc/refman/8.0/en/partitioning-subpartitions.html 阅读全文