摘要:
select legth(column_name) , lengthb(column_name) from table_name where length(column_name) != lengthb(column_name) ;length(column_name) 字的长度, lengthb(column_name) 字节的长度,中文是双字节,如 '中国' length( '随笔)=2;le... 阅读全文
摘要:
select legth(column_name) , lengthb(column_name) from table_name where length(column_name) != lengthb(column_name) ;length(column_name) 字的长度, lengthb(column_name) 字节的长度,中文是双字节,如 '中国' length( '随笔)=2;le... 阅读全文
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