github.com/matrixorigin/matrixone@v1.2.0/test/distributed/cases/ddl/alter_table_check_foreignkey_reference.result (about)

     1  drop database if exists db7;
     2  create database db7;
     3  use db7;
     4  drop table if exists dept;
     5  create table dept(
     6  deptno int unsigned auto_increment COMMENT '部门编号',
     7  dname varchar(15) COMMENT '部门名称',
     8  loc varchar(50)  COMMENT '部门所在位置',
     9  primary key(deptno)
    10  ) COMMENT='部门表';
    11  INSERT INTO dept VALUES (10,'ACCOUNTING','NEW YORK');
    12  INSERT INTO dept VALUES (20,'RESEARCH','DALLAS');
    13  INSERT INTO dept VALUES (30,'SALES','CHICAGO');
    14  INSERT INTO dept VALUES (40,'OPERATIONS','BOSTON');
    15  drop table if exists emp;
    16  create table emp(
    17  empno int unsigned auto_increment COMMENT '雇员编号',
    18  ename varchar(15) COMMENT '雇员姓名',
    19  job varchar(10) COMMENT '雇员职位',
    20  mgr int unsigned COMMENT '雇员对应的领导的编号',
    21  hiredate date COMMENT '雇员的雇佣日期',
    22  sal decimal(7,2) COMMENT '雇员的基本工资',
    23  comm decimal(7,2) COMMENT '奖金',
    24  deptno int unsigned COMMENT '所在部门',
    25  primary key(empno),
    26  constraint `c1` FOREIGN KEY (deptno) REFERENCES dept(deptno)
    27  );
    28  INSERT INTO emp VALUES (7369,'SMITH','CLERK',7902,'1980-12-17',800,NULL,20);
    29  INSERT INTO emp VALUES (7499,'ALLEN','SALESMAN',7698,'1981-02-20',1600,300,30);
    30  INSERT INTO emp VALUES (7521,'WARD','SALESMAN',7698,'1981-02-22',1250,500,30);
    31  INSERT INTO emp VALUES (7566,'JONES','MANAGER',7839,'1981-04-02',2975,NULL,20);
    32  INSERT INTO emp VALUES (7654,'MARTIN','SALESMAN',7698,'1981-09-28',1250,1400,30);
    33  INSERT INTO emp VALUES (7698,'BLAKE','MANAGER',7839,'1981-05-01',2850,NULL,30);
    34  INSERT INTO emp VALUES (7782,'CLARK','MANAGER',7839,'1981-06-09',2450,NULL,10);
    35  INSERT INTO emp VALUES (7788,'SCOTT','ANALYST',7566,'0087-07-13',3000,NULL,20);
    36  INSERT INTO emp VALUES (7839,'KING','PRESIDENT',NULL,'1981-11-17',5000,NULL,10);
    37  INSERT INTO emp VALUES (7844,'TURNER','SALESMAN',7698,'1981-09-08',1500,0,30);
    38  INSERT INTO emp VALUES (7876,'ADAMS','CLERK',7788,'0087-07-13',1100,NULL,20);
    39  INSERT INTO emp VALUES (7900,'JAMES','CLERK',7698,'1981-12-03',950,NULL,30);
    40  INSERT INTO emp VALUES (7902,'FORD','ANALYST',7566,'1981-12-03',3000,NULL,20);
    41  INSERT INTO emp VALUES (7934,'MILLER','CLERK',7782,'1982-01-23',1300,NULL,10);
    42  alter table dept modify deptno int unsigned after dname;
    43  Cannot change column 'deptno': used in a foreign key constraint 'c1' of table 'db7.emp'
    44  alter table dept modify deptno int unsigned;
    45  Cannot change column 'deptno': used in a foreign key constraint 'c1' of table 'db7.emp'
    46  alter table dept change deptno deptId int unsigned after dname;
    47  Columns participating in a foreign key are renamed
    48  alter table dept change deptno deptId int unsigned;
    49  Columns participating in a foreign key are renamed
    50  alter table dept change deptno deptno int unsigned;
    51  Cannot change column 'deptno': used in a foreign key constraint 'c1' of table 'db7.emp'
    52  alter table dept change deptno deptno int unsigned after dname;
    53  Cannot change column 'deptno': used in a foreign key constraint 'c1' of table 'db7.emp'
    54  alter table dept modify deptno int unsigned auto_increment;
    55  desc dept;
    56  Field    Type    Null    Key    Default    Extra    Comment
    57  deptno    INT UNSIGNED(32)    NO    PRI    null        
    58  dname    VARCHAR(15)    YES        null        部门名称
    59  loc    VARCHAR(50)    YES        null        部门所在位置
    60  select * from dept;
    61  deptno    dname    loc
    62  10    ACCOUNTING    NEW YORK
    63  20    RESEARCH    DALLAS
    64  30    SALES    CHICAGO
    65  40    OPERATIONS    BOSTON
    66  alter table dept modify deptno int unsigned auto_increment after dname;
    67  desc dept;
    68  Field    Type    Null    Key    Default    Extra    Comment
    69  dname    VARCHAR(15)    YES        null        部门名称
    70  deptno    INT UNSIGNED(32)    NO    PRI    null        
    71  loc    VARCHAR(50)    YES        null        部门所在位置
    72  select * from dept;
    73  dname    deptno    loc
    74  ACCOUNTING    10    NEW YORK
    75  RESEARCH    20    DALLAS
    76  SALES    30    CHICAGO
    77  OPERATIONS    40    BOSTON
    78  INSERT INTO emp VALUES (7990,'MILLER','CLERK',7782,'1982-01-23',1300,NULL,100);
    79  internal error: Cannot add or update a child row: a foreign key constraint fails
    80  INSERT INTO emp VALUES (7990,'MILLER','CLERK',7782,'1982-01-23',1300,NULL,10);
    81  select * from emp;
    82  empno    ename    job    mgr    hiredate    sal    comm    deptno
    83  7369    SMITH    CLERK    7902    1980-12-17    800.00    null    20
    84  7499    ALLEN    SALESMAN    7698    1981-02-20    1600.00    300.00    30
    85  7521    WARD    SALESMAN    7698    1981-02-22    1250.00    500.00    30
    86  7566    JONES    MANAGER    7839    1981-04-02    2975.00    null    20
    87  7654    MARTIN    SALESMAN    7698    1981-09-28    1250.00    1400.00    30
    88  7698    BLAKE    MANAGER    7839    1981-05-01    2850.00    null    30
    89  7782    CLARK    MANAGER    7839    1981-06-09    2450.00    null    10
    90  7788    SCOTT    ANALYST    7566    0087-07-13    3000.00    null    20
    91  7839    KING    PRESIDENT    null    1981-11-17    5000.00    null    10
    92  7844    TURNER    SALESMAN    7698    1981-09-08    1500.00    0.00    30
    93  7876    ADAMS    CLERK    7788    0087-07-13    1100.00    null    20
    94  7900    JAMES    CLERK    7698    1981-12-03    950.00    null    30
    95  7902    FORD    ANALYST    7566    1981-12-03    3000.00    null    20
    96  7934    MILLER    CLERK    7782    1982-01-23    1300.00    null    10
    97  7990    MILLER    CLERK    7782    1982-01-23    1300.00    null    10
    98  drop table emp;
    99  drop table dept;
   100  drop table if exists dept;
   101  create table dept(
   102  deptno int unsigned COMMENT '部门编号',
   103  dname varchar(15) COMMENT '部门名称',
   104  loc varchar(50)  COMMENT '部门所在位置',
   105  primary key(deptno)
   106  ) COMMENT='部门表';
   107  INSERT INTO dept VALUES (10,'ACCOUNTING','NEW YORK');
   108  INSERT INTO dept VALUES (20,'RESEARCH','DALLAS');
   109  INSERT INTO dept VALUES (30,'SALES','CHICAGO');
   110  INSERT INTO dept VALUES (40,'OPERATIONS','BOSTON');
   111  drop table if exists emp;
   112  create table emp(
   113  empno int unsigned auto_increment COMMENT '雇员编号',
   114  ename varchar(15) COMMENT '雇员姓名',
   115  job varchar(10) COMMENT '雇员职位',
   116  mgr int unsigned COMMENT '雇员对应的领导的编号',
   117  hiredate date COMMENT '雇员的雇佣日期',
   118  sal decimal(7,2) COMMENT '雇员的基本工资',
   119  comm decimal(7,2) COMMENT '奖金',
   120  deptno int unsigned COMMENT '所在部门',
   121  primary key(empno),
   122  constraint `c1` FOREIGN KEY (deptno) REFERENCES dept(deptno)
   123  );
   124  INSERT INTO emp VALUES (7369,'SMITH','CLERK',7902,'1980-12-17',800,NULL,20);
   125  INSERT INTO emp VALUES (7499,'ALLEN','SALESMAN',7698,'1981-02-20',1600,300,30);
   126  INSERT INTO emp VALUES (7521,'WARD','SALESMAN',7698,'1981-02-22',1250,500,30);
   127  INSERT INTO emp VALUES (7566,'JONES','MANAGER',7839,'1981-04-02',2975,NULL,20);
   128  INSERT INTO emp VALUES (7654,'MARTIN','SALESMAN',7698,'1981-09-28',1250,1400,30);
   129  INSERT INTO emp VALUES (7698,'BLAKE','MANAGER',7839,'1981-05-01',2850,NULL,30);
   130  INSERT INTO emp VALUES (7782,'CLARK','MANAGER',7839,'1981-06-09',2450,NULL,10);
   131  INSERT INTO emp VALUES (7788,'SCOTT','ANALYST',7566,'0087-07-13',3000,NULL,20);
   132  INSERT INTO emp VALUES (7839,'KING','PRESIDENT',NULL,'1981-11-17',5000,NULL,10);
   133  INSERT INTO emp VALUES (7844,'TURNER','SALESMAN',7698,'1981-09-08',1500,0,30);
   134  INSERT INTO emp VALUES (7876,'ADAMS','CLERK',7788,'0087-07-13',1100,NULL,20);
   135  INSERT INTO emp VALUES (7900,'JAMES','CLERK',7698,'1981-12-03',950,NULL,30);
   136  INSERT INTO emp VALUES (7902,'FORD','ANALYST',7566,'1981-12-03',3000,NULL,20);
   137  INSERT INTO emp VALUES (7934,'MILLER','CLERK',7782,'1982-01-23',1300,NULL,10);
   138  alter table dept modify deptno int unsigned auto_increment;
   139  Cannot change column 'deptno': used in a foreign key constraint 'c1' of table 'db7.emp'
   140  alter table dept modify deptno int unsigned auto_increment after dname;
   141  Cannot change column 'deptno': used in a foreign key constraint 'c1' of table 'db7.emp'
   142  alter table dept change deptno deptId int unsigned auto_increment after dname;
   143  Columns participating in a foreign key are renamed
   144  alter table dept change deptno deptId int unsigned auto_increment;
   145  Columns participating in a foreign key are renamed
   146  alter table dept change deptno deptId int unsigned after dname;
   147  desc dept;
   148  Field    Type    Null    Key    Default    Extra    Comment
   149  dname    VARCHAR(15)    YES        null        部门名称
   150  deptid    INT UNSIGNED(32)    NO    PRI    null        
   151  loc    VARCHAR(50)    YES        null        部门所在位置
   152  INSERT INTO emp VALUES (7990,'MILLER','CLERK',7782,'1982-01-23',1300,NULL,100);
   153  internal error: Cannot add or update a child row: a foreign key constraint fails
   154  INSERT INTO emp VALUES (7990,'MILLER','CLERK',7782,'1982-01-23',1300,NULL,10);
   155  select * from emp;
   156  empno    ename    job    mgr    hiredate    sal    comm    deptno
   157  7369    SMITH    CLERK    7902    1980-12-17    800.00    null    20
   158  7499    ALLEN    SALESMAN    7698    1981-02-20    1600.00    300.00    30
   159  7521    WARD    SALESMAN    7698    1981-02-22    1250.00    500.00    30
   160  7566    JONES    MANAGER    7839    1981-04-02    2975.00    null    20
   161  7654    MARTIN    SALESMAN    7698    1981-09-28    1250.00    1400.00    30
   162  7698    BLAKE    MANAGER    7839    1981-05-01    2850.00    null    30
   163  7782    CLARK    MANAGER    7839    1981-06-09    2450.00    null    10
   164  7788    SCOTT    ANALYST    7566    0087-07-13    3000.00    null    20
   165  7839    KING    PRESIDENT    null    1981-11-17    5000.00    null    10
   166  7844    TURNER    SALESMAN    7698    1981-09-08    1500.00    0.00    30
   167  7876    ADAMS    CLERK    7788    0087-07-13    1100.00    null    20
   168  7900    JAMES    CLERK    7698    1981-12-03    950.00    null    30
   169  7902    FORD    ANALYST    7566    1981-12-03    3000.00    null    20
   170  7934    MILLER    CLERK    7782    1982-01-23    1300.00    null    10
   171  7990    MILLER    CLERK    7782    1982-01-23    1300.00    null    10
   172  drop table emp;
   173  drop table dept;
   174  drop table if exists dept;
   175  create table dept(
   176  deptno int unsigned COMMENT '部门编号',
   177  dname varchar(15) COMMENT '部门名称',
   178  loc varchar(50)  COMMENT '部门所在位置',
   179  primary key(deptno)
   180  ) COMMENT='部门表';
   181  INSERT INTO dept VALUES (10,'ACCOUNTING','NEW YORK');
   182  INSERT INTO dept VALUES (20,'RESEARCH','DALLAS');
   183  INSERT INTO dept VALUES (30,'SALES','CHICAGO');
   184  INSERT INTO dept VALUES (40,'OPERATIONS','BOSTON');
   185  drop table if exists emp;
   186  create table emp(
   187  empno int unsigned auto_increment COMMENT '雇员编号',
   188  ename varchar(15) COMMENT '雇员姓名',
   189  job varchar(10) COMMENT '雇员职位',
   190  mgr int unsigned COMMENT '雇员对应的领导的编号',
   191  hiredate date COMMENT '雇员的雇佣日期',
   192  sal decimal(7,2) COMMENT '雇员的基本工资',
   193  comm decimal(7,2) COMMENT '奖金',
   194  deptno int unsigned COMMENT '所在部门',
   195  primary key(empno),
   196  constraint `c1` FOREIGN KEY (deptno) REFERENCES dept(deptno)
   197  );
   198  INSERT INTO emp VALUES (7369,'SMITH','CLERK',7902,'1980-12-17',800,NULL,20);
   199  INSERT INTO emp VALUES (7499,'ALLEN','SALESMAN',7698,'1981-02-20',1600,300,30);
   200  INSERT INTO emp VALUES (7521,'WARD','SALESMAN',7698,'1981-02-22',1250,500,30);
   201  INSERT INTO emp VALUES (7566,'JONES','MANAGER',7839,'1981-04-02',2975,NULL,20);
   202  INSERT INTO emp VALUES (7654,'MARTIN','SALESMAN',7698,'1981-09-28',1250,1400,30);
   203  INSERT INTO emp VALUES (7698,'BLAKE','MANAGER',7839,'1981-05-01',2850,NULL,30);
   204  INSERT INTO emp VALUES (7782,'CLARK','MANAGER',7839,'1981-06-09',2450,NULL,10);
   205  INSERT INTO emp VALUES (7788,'SCOTT','ANALYST',7566,'0087-07-13',3000,NULL,20);
   206  INSERT INTO emp VALUES (7839,'KING','PRESIDENT',NULL,'1981-11-17',5000,NULL,10);
   207  INSERT INTO emp VALUES (7844,'TURNER','SALESMAN',7698,'1981-09-08',1500,0,30);
   208  INSERT INTO emp VALUES (7876,'ADAMS','CLERK',7788,'0087-07-13',1100,NULL,20);
   209  INSERT INTO emp VALUES (7900,'JAMES','CLERK',7698,'1981-12-03',950,NULL,30);
   210  INSERT INTO emp VALUES (7902,'FORD','ANALYST',7566,'1981-12-03',3000,NULL,20);
   211  INSERT INTO emp VALUES (7934,'MILLER','CLERK',7782,'1982-01-23',1300,NULL,10);
   212  alter table dept modify deptno int unsigned default 10;
   213  desc dept;
   214  Field    Type    Null    Key    Default    Extra    Comment
   215  deptno    INT UNSIGNED(32)    NO    PRI    10        
   216  dname    VARCHAR(15)    YES        null        部门名称
   217  loc    VARCHAR(50)    YES        null        部门所在位置
   218  select * from dept;
   219  deptno    dname    loc
   220  10    ACCOUNTING    NEW YORK
   221  20    RESEARCH    DALLAS
   222  30    SALES    CHICAGO
   223  40    OPERATIONS    BOSTON
   224  alter table dept modify deptno int unsigned after dname;
   225  desc dept;
   226  Field    Type    Null    Key    Default    Extra    Comment
   227  dname    VARCHAR(15)    YES        null        部门名称
   228  deptno    INT UNSIGNED(32)    NO    PRI    null        
   229  loc    VARCHAR(50)    YES        null        部门所在位置
   230  select * from dept;
   231  dname    deptno    loc
   232  ACCOUNTING    10    NEW YORK
   233  RESEARCH    20    DALLAS
   234  SALES    30    CHICAGO
   235  OPERATIONS    40    BOSTON
   236  INSERT INTO emp VALUES (7990,'MILLER','CLERK',7782,'1982-01-23',1300,NULL,100);
   237  internal error: Cannot add or update a child row: a foreign key constraint fails
   238  INSERT INTO emp VALUES (7990,'MILLER','CLERK',7782,'1982-01-23',1300,NULL,10);
   239  select * from emp;
   240  empno    ename    job    mgr    hiredate    sal    comm    deptno
   241  7369    SMITH    CLERK    7902    1980-12-17    800.00    null    20
   242  7499    ALLEN    SALESMAN    7698    1981-02-20    1600.00    300.00    30
   243  7521    WARD    SALESMAN    7698    1981-02-22    1250.00    500.00    30
   244  7566    JONES    MANAGER    7839    1981-04-02    2975.00    null    20
   245  7654    MARTIN    SALESMAN    7698    1981-09-28    1250.00    1400.00    30
   246  7698    BLAKE    MANAGER    7839    1981-05-01    2850.00    null    30
   247  7782    CLARK    MANAGER    7839    1981-06-09    2450.00    null    10
   248  7788    SCOTT    ANALYST    7566    0087-07-13    3000.00    null    20
   249  7839    KING    PRESIDENT    null    1981-11-17    5000.00    null    10
   250  7844    TURNER    SALESMAN    7698    1981-09-08    1500.00    0.00    30
   251  7876    ADAMS    CLERK    7788    0087-07-13    1100.00    null    20
   252  7900    JAMES    CLERK    7698    1981-12-03    950.00    null    30
   253  7902    FORD    ANALYST    7566    1981-12-03    3000.00    null    20
   254  7934    MILLER    CLERK    7782    1982-01-23    1300.00    null    10
   255  7990    MILLER    CLERK    7782    1982-01-23    1300.00    null    10
   256  drop table emp;
   257  drop table dept;
   258  drop table if exists dept;
   259  create table dept(
   260  deptno int unsigned auto_increment COMMENT '部门编号',
   261  dname varchar(15) COMMENT '部门名称',
   262  loc varchar(50)  COMMENT '部门所在位置',
   263  primary key(deptno)
   264  ) COMMENT='部门表';
   265  INSERT INTO dept VALUES (10,'ACCOUNTING','NEW YORK');
   266  INSERT INTO dept VALUES (20,'RESEARCH','DALLAS');
   267  INSERT INTO dept VALUES (30,'SALES','CHICAGO');
   268  INSERT INTO dept VALUES (40,'OPERATIONS','BOSTON');
   269  drop table if exists emp;
   270  create table emp(
   271  empno int unsigned auto_increment COMMENT '雇员编号',
   272  ename varchar(15) COMMENT '雇员姓名',
   273  job varchar(10) COMMENT '雇员职位',
   274  mgr int unsigned COMMENT '雇员对应的领导的编号',
   275  hiredate date COMMENT '雇员的雇佣日期',
   276  sal decimal(7,2) COMMENT '雇员的基本工资',
   277  comm decimal(7,2) COMMENT '奖金',
   278  deptno int unsigned COMMENT '所在部门',
   279  primary key(empno),
   280  constraint `c1` FOREIGN KEY (deptno) REFERENCES dept(deptno)
   281  );
   282  INSERT INTO emp VALUES (7369,'SMITH','CLERK',7902,'1980-12-17',800,NULL,20);
   283  INSERT INTO emp VALUES (7499,'ALLEN','SALESMAN',7698,'1981-02-20',1600,300,30);
   284  INSERT INTO emp VALUES (7521,'WARD','SALESMAN',7698,'1981-02-22',1250,500,30);
   285  INSERT INTO emp VALUES (7566,'JONES','MANAGER',7839,'1981-04-02',2975,NULL,20);
   286  INSERT INTO emp VALUES (7654,'MARTIN','SALESMAN',7698,'1981-09-28',1250,1400,30);
   287  INSERT INTO emp VALUES (7698,'BLAKE','MANAGER',7839,'1981-05-01',2850,NULL,30);
   288  INSERT INTO emp VALUES (7782,'CLARK','MANAGER',7839,'1981-06-09',2450,NULL,10);
   289  INSERT INTO emp VALUES (7788,'SCOTT','ANALYST',7566,'0087-07-13',3000,NULL,20);
   290  INSERT INTO emp VALUES (7839,'KING','PRESIDENT',NULL,'1981-11-17',5000,NULL,10);
   291  INSERT INTO emp VALUES (7844,'TURNER','SALESMAN',7698,'1981-09-08',1500,0,30);
   292  INSERT INTO emp VALUES (7876,'ADAMS','CLERK',7788,'0087-07-13',1100,NULL,20);
   293  INSERT INTO emp VALUES (7900,'JAMES','CLERK',7698,'1981-12-03',950,NULL,30);
   294  INSERT INTO emp VALUES (7902,'FORD','ANALYST',7566,'1981-12-03',3000,NULL,20);
   295  INSERT INTO emp VALUES (7934,'MILLER','CLERK',7782,'1982-01-23',1300,NULL,10);
   296  alter table dept ALTER COLUMN deptno SET DEFAULT 10;
   297  desc dept;
   298  Field    Type    Null    Key    Default    Extra    Comment
   299  deptno    INT UNSIGNED(32)    NO    PRI    null        部门编号
   300  dname    VARCHAR(15)    YES        null        部门名称
   301  loc    VARCHAR(50)    YES        null        部门所在位置
   302  alter table dept ALTER COLUMN deptno SET INVISIBLE;
   303  desc dept;
   304  Field    Type    Null    Key    Default    Extra    Comment
   305  deptno    INT UNSIGNED(32)    NO    PRI    null        部门编号
   306  dname    VARCHAR(15)    YES        null        部门名称
   307  loc    VARCHAR(50)    YES        null        部门所在位置
   308  alter table dept ALTER COLUMN deptno drop default;
   309  desc dept;
   310  Field    Type    Null    Key    Default    Extra    Comment
   311  deptno    INT UNSIGNED(32)    NO    PRI    null        部门编号
   312  dname    VARCHAR(15)    YES        null        部门名称
   313  loc    VARCHAR(50)    YES        null        部门所在位置
   314  alter table dept rename column deptno to deptid;
   315  desc dept;
   316  Field    Type    Null    Key    Default    Extra    Comment
   317  deptid    INT UNSIGNED(32)    NO    PRI    null        部门编号
   318  dname    VARCHAR(15)    YES        null        部门名称
   319  loc    VARCHAR(50)    YES        null        部门所在位置
   320  select * from dept;
   321  deptid    dname    loc
   322  10    ACCOUNTING    NEW YORK
   323  20    RESEARCH    DALLAS
   324  30    SALES    CHICAGO
   325  40    OPERATIONS    BOSTON
   326  INSERT INTO emp VALUES (7990,'MILLER','CLERK',7782,'1982-01-23',1300,NULL,100);
   327  internal error: Cannot add or update a child row: a foreign key constraint fails
   328  INSERT INTO emp VALUES (7990,'MILLER','CLERK',7782,'1982-01-23',1300,NULL,10);
   329  select * from emp;
   330  empno    ename    job    mgr    hiredate    sal    comm    deptno
   331  7369    SMITH    CLERK    7902    1980-12-17    800.00    null    20
   332  7499    ALLEN    SALESMAN    7698    1981-02-20    1600.00    300.00    30
   333  7521    WARD    SALESMAN    7698    1981-02-22    1250.00    500.00    30
   334  7566    JONES    MANAGER    7839    1981-04-02    2975.00    null    20
   335  7654    MARTIN    SALESMAN    7698    1981-09-28    1250.00    1400.00    30
   336  7698    BLAKE    MANAGER    7839    1981-05-01    2850.00    null    30
   337  7782    CLARK    MANAGER    7839    1981-06-09    2450.00    null    10
   338  7788    SCOTT    ANALYST    7566    0087-07-13    3000.00    null    20
   339  7839    KING    PRESIDENT    null    1981-11-17    5000.00    null    10
   340  7844    TURNER    SALESMAN    7698    1981-09-08    1500.00    0.00    30
   341  7876    ADAMS    CLERK    7788    0087-07-13    1100.00    null    20
   342  7900    JAMES    CLERK    7698    1981-12-03    950.00    null    30
   343  7902    FORD    ANALYST    7566    1981-12-03    3000.00    null    20
   344  7934    MILLER    CLERK    7782    1982-01-23    1300.00    null    10
   345  7990    MILLER    CLERK    7782    1982-01-23    1300.00    null    10
   346  drop table emp;
   347  drop table dept;
   348  drop database if exists db7;