青年中文itemnumber的意思
itemnumber中文翻譯：
項目
the other hand, if you use the EXISTS operator, all rows are modified because at least one of the itemNumber values exists in the table subquery.───另一方面，如果使用 EXISTS 操作符，則將修改所有行，因為至少有一個 itemNumber 值存在于表子查詢中。
An inner join is essentially the intersection of two tables, where the tables are matched by comparing the values of a key column, such as itemNumber.───內連接實際上是兩個表的交集，它通過比較關鍵列(比如itemnumber)的值來匹配表。
Without this requirement, the itemNumber column isn't guaranteed to be unique because multiple columns could be assigned a NULL value.───如果沒有這個要求，itemnumber列就無法保持惟一，因為多個行都可能被分配null值。
Without this requirement, the itemNumber column isn't guaranteed to be unique because multiple columns could be assigned a NULL value.───如果沒有這個要求，itemNumber列就無法保持惟一，因為多個行都可能被分配NULL值。
The final SQL statement explicitly lists three columns -- price, itemNumber, and description -- after the SELECT keyword.───最后一條SQL語句在SELECT關鍵字之后顯式列出了三個列——price、itemNumber和description。
The first SQL INSERT statement doesn't provide a list of columns; it inserts an itemNumber, a price, a stockDate, and a description.───第一個SQLINSERT語句沒有提供列列表；它插入itemNumber、price、stockDate和description。
Without this requirement, the itemNumber column isn't guaranteed to be unique because multiple columns could be assigned a NULL value.