MySQL 如何创建Tab分隔的Select语句

要创建Tab分隔的Select语句，您可以使用MySQL的CONCAT()函数。以下是语法：

select concat(yourColumnName1,"\t",yourColumnName2) AS anyAliasName from yourTableName;

首先让我们创建一个表：

mysql> create table DemoTable
(
    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
    FirstName varchar(20),
    LastName varchar(20)
);
Query OK, 0 rows affected (0.81 sec)

以下是使用insert命令向表中插入记录的查询：

mysql> insert into DemoTable(FirstName,LastName) values('John','Smith');
Query OK, 1 row affected (0.21 sec)
mysql> insert into DemoTable(FirstName,LastName) values('Carol','Taylor');
Query OK, 1 row affected (0.19 sec)
mysql> insert into DemoTable(FirstName,LastName) values('John','Doe');
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable(FirstName,LastName) values('David','Miller');
Query OK, 1 row affected (0.12 sec)

以下是使用select命令从表中显示记录的查询：

mysql> select *from DemoTable;

这将产生以下输出

+----+-----------+----------+
| Id | FirstName | LastName |
+----+-----------+----------+
|  1 | John      | Smith    |
|  2 | Carol     | Taylor   |
|  3 | John      | Doe      |
|  4 | David     | Miller   |
+----+-----------+----------+
4 rows in set (0.00 sec)

以下是创建Tab分隔的Select语句的查询：

mysql> select concat(FirstName,"\t",LastName) AS Tab_Delimited_Demo from DemoTable;

这将产生以下输出：

+--------------------+
| Tab_Delimited_Demo |
+--------------------+
| John Smith         |
| Carol Taylor       |
| John Doe           |    
| David Miller       |
+--------------------+
4 rows in set (0.00 sec)