This gives us 23 tables and a 24-table join to retrieve a DICOMData object.
这会产生23个表,而且检索一个DICOMData对象要连接 24 个表。
As part of the transformation, the optimizer also determines the correct table join order, rewrites expressions, and eliminates any redundancy from the SQL.
作为转换的一部分,优化器还决定正确的表联接顺序,重写表达式,并从SQL中消除任何冗余。
Once again, the second query requires no table join.
第二查询也不需要表连接。
Step 7: Adding a Table Join operator.
步骤7:添加一个Table join操作符。
Specify the condition for the table Join operator by connecting the tables using the unique term number, which is SKILL_ID in the result set of the text analysis and TERM_ID in the taxonomy table.
通过使用唯一的术语编号将表连接起来,为Table Join操作符指定条件,术语编号为文本分析结果集中的SKILL_ID,和位于分类表中的TERM_ID。
Specify the condition for the table Join operator by connecting the tables using the unique term number, which is SKILL_ID in the result set of the text analysis and TERM_ID in the taxonomy table.
通过使用唯一的术语编号将表连接起来,为Table Join操作符指定条件,术语编号为文本分析结果集中的SKILL_ID,和位于分类表中的TERM_ID。
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