db2_special_columns
(PECL ibm_db2 >= 1.0.0)
db2_special_columns — Returns a result set listing the unique row identifier columns for a table
Description
$connection
, string $qualifier
, string $schema
, string $table_name
, int $scope
)Returns a result set listing the unique row identifier columns for a table.
Parameters
-
connection -
A valid connection to an IBM DB2, Cloudscape, or Apache Derby database.
-
qualifier -
A qualifier for DB2 databases running on OS/390 or z/OS servers. For other databases, pass
NULLor an empty string. -
schema -
The schema which contains the tables.
-
table_name -
The name of the table.
-
scope -
Integer value representing the minimum duration for which the unique row identifier is valid. This can be one of the following values:
Integer value SQL constant Description 0 SQL_SCOPE_CURROW Row identifier is valid only while the cursor is positioned on the row. 1 SQL_SCOPE_TRANSACTION Row identifier is valid for the duration of the transaction. 2 SQL_SCOPE_SESSION Row identifier is valid for the duration of the connection.
Return Values
Returns a statement resource with a result set containing rows with unique row identifier information for a table. The rows are composed of the following columns:
| Column name | Description | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SCOPE |
|
||||||||||||
| COLUMN_NAME | Name of the unique column. | ||||||||||||
| DATA_TYPE | SQL data type for the column. | ||||||||||||
| TYPE_NAME | Character string representation of the SQL data type for the column. | ||||||||||||
| COLUMN_SIZE | An integer value representing the size of the column. | ||||||||||||
| BUFFER_LENGTH | Maximum number of bytes necessary to store data from this column. | ||||||||||||
| DECIMAL_DIGITS |
The scale of the column, or NULL where scale is not applicable.
|
||||||||||||
| NUM_PREC_RADIX |
An integer value of either 10 (representing
an exact numeric data type), 2 (representing an
approximate numeric data type), or NULL (representing a data type for
which radix is not applicable).
|
||||||||||||
| PSEUDO_COLUMN | Always returns 1. |
See Also
- db2_column_privileges() - Returns a result set listing the columns and associated privileges for a table
- db2_columns() - Returns a result set listing the columns and associated metadata for a table
- db2_foreign_keys() - Returns a result set listing the foreign keys for a table
- db2_primary_keys() - Returns a result set listing primary keys for a table
- db2_procedure_columns() - Returns a result set listing stored procedure parameters
- db2_procedures() - Returns a result set listing the stored procedures registered in a database
- db2_statistics() - Returns a result set listing the index and statistics for a table
- db2_table_privileges() - Returns a result set listing the tables and associated privileges in a database
- db2_tables() - Returns a result set listing the tables and associated metadata in a database
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Расширения для работы с базами данных
- Расширения для работы с базами данных отдельных производителей
- IBM DB2, Cloudscape and Apache Derby
- db2_autocommit
- db2_bind_param
- db2_client_info
- db2_close
- db2_column_privileges
- db2_columns
- db2_commit
- db2_conn_error
- db2_conn_errormsg
- db2_connect
- db2_cursor_type
- db2_escape_string
- db2_exec
- db2_execute
- db2_fetch_array
- db2_fetch_assoc
- db2_fetch_both
- db2_fetch_object
- db2_fetch_row
- db2_field_display_size
- db2_field_name
- db2_field_num
- db2_field_precision
- db2_field_scale
- db2_field_type
- db2_field_width
- db2_foreign_keys
- db2_free_result
- db2_free_stmt
- db2_get_option
- db2_last_insert_id
- db2_lob_read
- db2_next_result
- db2_num_fields
- db2_num_rows
- db2_pclose
- db2_pconnect
- db2_prepare
- db2_primary_keys
- db2_procedure_columns
- db2_procedures
- db2_result
- db2_rollback
- db2_server_info
- db2_set_option
- db2_special_columns
- db2_statistics
- db2_stmt_error
- db2_stmt_errormsg
- db2_table_privileges
- db2_tables
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