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Query output has a fixed number of columns, with each row filling in values for every fixed column.
在查询输出中,列的数量是固定的,每行填入了每个固定列的值。
youdao
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Query output has a fixed number of columns, with each row filling in values for every fixed column.
在查询输出中,列的数量是固定的,每行填入了每个固定列的值。
youdao