mysql> show tables

-> ;

+----------------+

| Tables_in_test |

+----------------+

| sale_report??? |

| test_dysql???? |

| union_tab_1??? |

| union_tab_2??? |

| v_sale_report? |

+----------------+

5 rows in set (0.00 sec)

Oracle 使用下面的語句實現

SQL> SELECT

2??? table_name

3? FROM

4??? all_tables

5? WHERE

6??? ROWNUM < 10;

TABLE_NAME

------------------------------------------------------------

ICOL$

CON$

UNDO$

PROXY_ROLE_DATA$

FILE$

UET$

IND$

SEG$

COL$

9 rows selected.

mysql> desc sale_report;

+------------+---------------+------+-----+---------+-------+

| Field????? | Type????????? | Null | Key | Default | Extra |

+------------+---------------+------+-----+---------+-------+

| SALE_DATE? | datetime????? | NO?? |???? | NULL??? |?????? |

| SALE_ITEM? | varchar(2)??? | NO?? |???? | NULL??? |?????? |

| SALE_MONEY | decimal(10,2) | NO?? |???? | NULL??? |?????? |

+------------+---------------+------+-----+---------+-------+

3 rows in set (0.00 sec)

Oracle

SQL> desc all_tab_columns

Name????????????????????????????????????? Null???? Type

----------------------------------------- -------- ----------------------------

OWNER???????????????????????????????????? NOT NULL VARCHAR2(30)

TABLE_NAME??????????????????????????????? NOT NULL VARCHAR2(30)

COLUMN_NAME?????????????????????????????? NOT NULL VARCHAR2(30)

DATA_TYPE????????????????????????????????????????? VARCHAR2(106)

DATA_TYPE_MOD????????????????????????????????????? VARCHAR2(3)

DATA_TYPE_OWNER??????????????????????????????????? VARCHAR2(30)

總結

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