RIGHT OUTER JOIN COUNTRIES ON CITIES.COUNTRY_ISO_CODE = COUNTRIES.COUNTRY_ISO_CODE WHERE Countries.region = 'Africa'-- use the synonymous syntax, RIGHT JOIN, to achieve exactly -- the same results as in the example aboveSELECT COUNTRIES.COUNTRY, CITIES.CITY_NAME FROM CITIES RIGHT JOIN COUNTRIE...
而left outer join 则不允许不加 ON 条件 select product.name, category.name as category from product left outer join `category` You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 2 ON 过滤条件...
WikiMatrix Per ulteriori informazioni sulla sintassi degliouter join, vedere l'argomento LEFTJOIN,RIGHT JOINOperations. For more information aboutouter joinsyntax, see the topic LEFTJOIN,RIGHTJOIN Operations. ParaCrawl Corpus
以下是摘自oracle ocp9i文档: outer join syntax: 1)you use an outer join to also see rows that do not meet the join condition 2)the outer join operator is the plus sign(+) outer join restrictions: 1) ...
RIGHT JOIN: 即使左表中没有匹配,也会返回右表中的所有行。 FULL JOIN: 结合了左外部联接和右外部联接的结果。 联接后的表将包含两个表中的所有记录,并为任何一侧的缺少匹配的位置填充NULL。 SELF JOIN: 将一个表作为两个表进行联接,就好像在SQL语句中暂时重命名至少一个表。
RIGHT OUTER JOIN syntax.SELECT column-names FROM table-name1 RIGHT OUTER JOIN table-name2 ON column-name1 = column-name2 WHERE conditionRIGHT JOIN and RIGHT OUTER JOIN are the same. The OUTER keyword is optional. More ExamplesRIGHT JOIN example CUSTOMER Id FirstName LastName City Country ...
Right [OUTER] JOIN table2 ON table1.column = table2.column; In the above syntax,table1is referring to theleft table, andtable2is referring to theright table, which implies that the particular condition will return all records fromtable 2and matching records fromtable1according to the defined...
Match the right table with the left table and return all matched records of the right table. If no matched record is found, NULL will be returned.RIGHT OUTER JOIN: Return
Syntax FROMtable1[ LEFT | RIGHT ] JOINtable2 ONtable1.field1compoprtable2.field2 The LEFT JOIN and RIGHT JOIN operations have these parts: Remarks Use a LEFT JOIN operation to create a left outer join. Left outer joins include all of the records from the first (left) of two tables, ...
key. We will use the RIGHT OUTER JOIN condition, specifying the columns from each table we are joining on. Note that I use table aliases as a short cut to denote which table each column in the select is coming from (v for Vendor and po for PurchaseOrderHeader). Here is the syntax: ...