When we want to select out all the record from two table, no matter it's present at second table or not, we will have to useSQL OUTER JOINcommand. There are 3 type ofOUTER JOIN, which is: LEFT OUTER JOIN RIGHT OUTER JOIN FULL OUTER JOIN SQLOUTER JOINsyntax: SELECT* FROM[TABLE 1]...
RIGHT (OUTER) JOIN : 右外部连接 FULL (OUTER) JOIN : 全部外部连接 CROSS JOIN : 交叉连接 NATURAL JOIN : 自然连接 INNER JOIN - 内部连接 INNER JOIN (内部连接) 为等值连接,必需指定等值连接的条件,而查询结果只会返回符合连接条件的数据。 INNER JOIN 语法 (SQL INNER JOIN Syntax) SELECT table_column...
FULL OUTER JOIN SYNTAX The syntax of the SQL FULL OUTER JOIN statement is: SELECT columns FROM table1 FULL OUTER JOIN table2 ON table1.column1 = table2.column2; Here, table1 and table2 are the tables to be joined column1 and column2 are the related columns in the two tables Example...
SQL FULL OUTER JOIN关键字在左表(table1)或右表(table2)记录中有匹配时返回所有记录。 FULL OUTER JOIN语法 代码语言:SQL 复制 SELECTcolumn_name(s)FROMtable1FULLOUTERJOINtable2ONtable1.column_name=table2.column_nameWHEREcondition; 注意:FULL OUTER JOIN和FULL JOIN是相同的。FULL OUTER JOIN可能返回非常...
FULLOUTERJOINTable_B B ONA.PK = B.PK WHEREA.PKISNULL ORB.PKISNULL; 因为使用到了 FULL OUTER JOIN,MySQL 在执行该查询时再次报错。 ERROR 1064 (42000): You have an errorinyour SQL syntax; check the manual that corresponds to your MySQL server versionforthe right syntax to use near'FULL ...
SQL full outer join returns: all rows in the left table table_A. all rows in the right table table_B. and all matching rows in both tables. Some database management systems do not support SQL full outer join syntax e.g., MySQL. Because SQL full outer join returns a result set that...
FULL OUTER JOIN 一般被译作外连接、全连接,实际查询语句中可以写作 FULL OUTER JOIN 或 FULL JOIN 。外连接查询能返回左右表里的所有记录,其中左右表里能关联起来的记录被连接后返回。 文氏图: 示例查询: SELECTA.PKASA_PK, B.PKASB_PK, A.ValueASA_Value, B.ValueASB_Value ...
Syntax:SELECT * FROM table1 FULL OUTER JOIN table2 ON table1.column_name=table2.column_name; Explanation:SELECT *: Selects all columns from the resulting table. FROM table1: Specifies the first table to join. FULL OUTER JOIN table2: Specifies the second table and the type of join (FULL...
FULL JOIN 即為 LEFT JOIN 與RIGHT JOIN 的聯集,它會返回左右資料表中所有的紀錄,不論是否符合連接條件。 FULL JOIN 語法 (SQL FULL JOIN Syntax) SELECT table_column1, table_column2... FROM table_name1 FULL JOIN table_name2 ON table_name1.column_name=table_name2.column_name; FULL JOIN 查詢...
SQL FULL OUTER JOIN Syntax: SELECT column_name(s)FROM Table1FULLOUTERJOIN Table2ON Table1.column_name=Table2.column_name; FULL OUTER JOIN query Example: Suppose we want to get all Order records against all the Product records, then we can use the FULL OUTER JOIN script shown below to ge...