key row
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该定义中使用的列被称为表分区键列。
The columns used in this definition are referred to as the table partitioning key columns.
youdao
具有可变长度的索引键列。
For an index key column that is of variable length.
TP只对那些包括表分区键列的查询有利。
TP will only benefit those queries that include the table partitioning key column.
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