mysql>CREATETABLErunoon_tbl( ->runoon_idINTNOTNULLAUTO_INCREMENT, ->runoon_titleVARCHAR(100)NOTNULL, ->runoon_authorVARCHAR(40)NOTNULL, ->submission_dateDATE, ->PRIMARYKEY(runoon_id) ->)ENGINE=InnoDBDEFAULTCHARSET=utf8; Query OK,0rowsaffe...
CREATETABLEnew_tblLIKEorig_tbl; [as] query_expression 根据一个查询结果集,创建一个包含这些数据的新表。 CREATETABLEnew_tblASSELECT*FROMorig_tbl; IGNORE | REPLACE 这两个选项表明,当根据select语句创建表时,该如何处理复制唯一键值的行。(how to handle rows that duplicate unique key values when copying...
CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name [AS] query_expression 示例: createtabletest2asselectid,name,sex,createTimefromtest1; 效果展示: 总结: 通过这种方式创建的表格会把查询到的数据以及对查询表格字段的定义都会复制复制过来。 通过create...like创建 语法: CREATE [TEMPORARY] TABLE [IF NOT...
mysql>CREATETABLErunoob_tbl( ->runoob_idINTNOTNULLAUTO_INCREMENT, ->runoob_titleVARCHAR(100)NOTNULL, ->runoob_authorVARCHAR(40)NOTNULL, ->submission_dateDATE, ->PRIMARYKEY(runoob_id) ->)ENGINE=InnoDBDEFAULTCHARSET=utf8; Query OK,0ROWSaffected(0.16sec) mysql> 注意:MySQL 命令终止符为分号;。
delete from table_name [where ...] [order by ...] [limit ...]; 删除孙悟空同学的考试成绩 代码语言:javascript 代码运行次数:0 运行 AI代码解释 mysql> delete from exam_result where name = '孙悟空'; Query OK, 1 row affected (0.00 sec) mysql> select * from exam_result where name = ...
CREATE TABLE Parser When a query is sent to the server, the first step is to invoke the bison parser to build an Abstract Syntax Tree to represent the query text. Assume the following statement: CREATE TABLE test.t1 (a int) ENGINE = "INNODB"; ...
mysql> CREATE TABLE tb_emp3 -> ( -> id INT(11), -> name VARCHAR(25), -> deptID INT(11), -> salary FLOAT, -> PRIMARY KEY(id) -> ); Query OK, 0 rows affected (0.59 sec) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
使用MySQL查询结果创建表格是一个非常有用的技巧,可以将查询结果保存为一个新的表格,方便后续的数据处理和分析。在本文中,我们介绍了使用CREATE TABLE ... SELECT语句来创建新表格的基本语法,并提供了一个示例来演示其用法。 希望本文对您有所帮助! Query Database ...
if(mysqli_query($conn, $sql)) { echo"Table MyGuests created successfully"; }else{ echo"Error creating table: ". mysqli_error($conn); } mysqli_close($conn); ?> Example (PDO) <?php $servername ="localhost"; $username ="username"; ...