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# db2_procedure_columns

(PECL)

db2_procedure_columns -- Returns a result set listing stored procedure parameters

## Description

resource db2_procedure_columns ( resource connection, string qualifier, string schema, string procedure, string parameter )

Returns a result set listing the parameters for one or more stored procedures.

## 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 `NULL` or an empty string.

schema

  The schema which contains the procedures. This parameter accepts a search pattern containing _ and % as wildcards.

procedure

  The name of the procedure. This parameter accepts a search pattern containing _ and % as wildcards.

parameter

  The name of the parameter. This parameter accepts a search pattern containing _ and % as wildcards. If this parameter is `NULL`, all parameters for the specified stored procedures are returned.

## Return Values

Returns a statement resource with a result set containing rows describing the parameters for the stored procedures matching the specified parameters. The rows are composed of the following columns:

Column name | Description
--- | ---
PROCEDURE_CAT | The catalog that contains the procedure. The value is `NULL` if this table does not have catalogs.
PROCEDURE_SCHEM | Name of the schema that contains the stored procedure.
PROCEDURE_NAME | Name of the procedure.
COLUMN_NAME | Name of the parameter.
COLUMN_TYPE | An integer value representing the type of the parameter:
Return value | Parameter type
1 (SQL_PARAM_INPUT) | Input (IN) parameter.
2 (SQL_PARAM_INPUT_OUTPUT) | Input/output (INOUT) parameter.
3 (SQL_PARAM_OUTPUT) | Output (OUT) parameter.
DATA_TYPE | The SQL data type for the parameter represented as an integer value.
TYPE_NAME | A string representing the data type for the parameter.
COLUMN_SIZE | An integer value representing the size of the parameter.
BUFFER_LENGTH | Maximum number of bytes necessary to store data for this parameter.
DECIMAL_DIGITS | The scale of the parameter, 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).
NULLABLE | An integer value representing whether the parameter is nullable or not.
REMARKS | Description of the parameter.
COLUMN_DEF | Default value for the parameter.
SQL_DATA_TYPE | An integer value representing the size of the parameter.
SQL_DATETIME_SUB | Returns an integer value representing a datetime subtype code, or `NULL` for SQL data types to which this does not apply.
CHAR_OCTET_LENGTH | Maximum length in octets for a character data type parameter, which matches COLUMN_SIZE for single-byte character set data, or `NULL` for non-character data types.
ORDINAL_POSITION | The 1-indexed position of the parameter in the CALL statement.
IS_NULLABLE | A string value where 'YES' means that the parameter accepts or returns `NULL` values and 'NO' means that the parameter does not accept or return `NULL` values.

## See Also

db2_column_privileges()
db2_columns()
db2_foreign_keys()
db2_primary_keys()
db2_procedures()
db2_special_columns()
db2_statistics()
db2_table_privileges()
db2_tables()

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