left outer join的意思

left outer join中文翻譯：

左外連接

相似詞語短語

specification left join───規范左連接

outer───n.環外命中；adj.外面的，外部的；遠離中心的

join───n.(Join)人名；(法)茹安；vt.參加；結合；連接；vi.加入；參加；結合；n.結合；連接；接合點

left───v.離開（leave的過去式）；adj.左邊的；左派的；剩下的；n.左邊；左派；激進分子；adv.在左面

outer space───n.太空；外層空間；n.太空，外層空間

join force───合力；共同合作；加入

outer worlds───外部世界；個人生活圈子以外的人

outer planet───n.帶外行星；[天]外行星；[天]帶外行星

outer product───[數]外積；叉積；矢量積

雙語使用場景

In this regard, the query is similar to a left outer join in SQL.───從這種意義上說，查詢與 SQL 中的左外連接相似。

The combined record is much easier to use-you only have to check the PICTURE field to see if it's not null (which was the result of the LEFT OUTER JOIN).───而組合的記錄使用起來要容易得多—只需檢查PICTURE字段，查看它是否為空(這是LEFT OUTER JOIN的結果)。

Figure 8 shows that the left outer join operations are cascaded if a rule USES more than one reference column.───圖8展示了如果規則使用了多個參考列，那么左外部連接就進行級聯。

A right outer join is the reverse of a left outer join.───右向外部聯接是左向外部聯接的反向聯接。

Left Outer Join: In Left Outer Join, all the rows in the first-named table, i. e.───左外聯接：在左外聯接中，第一張表中的所有行將被包含。

To include all products, regardless of whether a review has been written for one, use an SQL-92 left outer join.───若要包括所有產品，不論是否已編寫審核，請使用SQL-92左外部聯接。

left join or left outer join is a join that presents values for matched values and those that present only in the left table───左連接或左外連接表示匹配值和只出現在左表中的的值。

For example, the following SELECT statement does a left outer join on these two tables───例如，下面的SELECT語句對這兩個表進行左向外部聯接

英語使用場景

Figure 8 shows that the left outer join operations are cascaded if a rule uses more than one reference column.

The following illustration shows a conceptual view of two sets and the elements within those sets that are included in either an inner join or a left outer join.