в 13:45, 26 мая 2010

2010-05-26T13:45:46Z

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2010-05-26T10:08:03Z

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== Get information on your nested tables from the user_nested_tables view==



<source lang="sql">
SQL>
SQL> desc user_nested_tables;
Name Null? Type
TABLE_NAME VARCHAR2(30) Name of the nested table
TABLE_TYPE_OWNER VARCHAR2(30) User who owns the nested table type
TABLE_TYPE_NAME VARCHAR2(30) Name of the nested table type
PARENT_TABLE_NAME VARCHAR2(30) Name of the parent table that contains the nested table
PARENT_TABLE_COLUMN VARCHAR2(4000) Name of the column in the parent table containing the nested table
STORAGE_SPEC VARCHAR2(30) Storage specification for the nested table
RETURN_TYPE VARCHAR2(20) Return type of the column
ELEMENT_SUBSTITUTABLE VARCHAR2(25)
SQL> CREATE Or Replace TYPE AddressType AS OBJECT (
2 street VARCHAR2(15),
3 city VARCHAR2(15),
4 state CHAR(2),
5 zip VARCHAR2(5)
6 );
7 /
SQL>
SQL> CREATE Or Replace TYPE nested_table_AddressType AS TABLE OF AddressType;
2 /
Type created.
SQL>
SQL> CREATE TABLE employee (
2 id INTEGER PRIMARY KEY,
3 first_name VARCHAR2(10),
4 last_name VARCHAR2(10),
5 addresses nested_table_AddressType
6 )
7 NESTED TABLE
8 addresses
9 STORE AS
10 nested_addresses;
Table created.
SQL>
SQL>
SQL> --SELECT * FROM user_nested_tables;
SQL>
SQL>
SQL> drop table employee;
Table dropped.
SQL>
SQL></source>

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Oracle PL/SQL Tutorial/System Tables Data Dictionary/user nested tables - История изменений

в 13:45, 26 мая 2010

Admin: 1 версия