1·方法采用随机抽样的方法调查1021例患者。
Methods Making research on 1021 patients by random sampling.
2·只能在用VARCHAR(1021)定义的列上定义索引。
You can only define an index on a column defined with VARCHAR (1021).
3·数字手表是用电子显示数字来表示时间的,例如1021。
A digital watch shows the time by electronically lit up Numbers e. g. 1021.
4·“数字手表是用电子显示数字来表示时间的,例如1021。”。
A digital watch shows the time by electronically lit up Numbers, e. g. 1021.
5·如果使用可空的vargraphic列,那么1021字节的索引限制仍然是对的。
If you use a nullable VARGRAPHIC column instead, the 1021-byte index limitation is still true.
6·如果使用可空的varchar列并只涉及ASCII字符(在utf - 8格式中每字符1字节),那么可以建立索引的最大字符长度是1021个字符。
If you use a nullable VARCHAR column and only ASCII characters (UTF-8 format 1 byte per character) involved, the maximum character length that can be indexed is 1021 characters.