-- 插入数据 insert into t2 values('a'); insert into t2 values('啊'); insert into t2 values('㺉'); commit; -- 查看所占字节长度 select c1,lengthb(c1),(ascii(c1)) from t2; 1. 2. 3. 4. 5. 6. 7. 8. 9. 不同字符集,不同字符所占的字节长度。 查看字符集 字符集在创建实例时...
Could not implicitly convert range values type specified at ordinal 1 to partition function parameter type. Count consecutive month reset if gap in months Count decimal without function Count Distinct based on another column in the same table Count distinct records per month based on the year fil...
Oracle Louis's latest contributions: Louis DavidsoninT-SQL Programming Exploring the SQL Server CHOOSE Function I preface a lot of what I write with whether or not it is for a “practical” use. One of the Simple Talk authors used... ...