primarykeys (Database Toolbox)

Get primary key information for database table or schema

Syntax

k = primarykeys(dbmeta, 'cata', 'sch')
k = primarykeys(dbmeta, 'cata', 'sch', 'tab')

Description

k = primarykeys(dbmeta, 'cata', 'sch') returns the primary key information for all tables in the schema sch, of the catalog cata, for the database whose database metadata object is dbmeta, where dbmeta was created using dmd.

k = primarykeys(dbmeta, 'cata', 'sch', 'tab') returns the primary key information for the table tab, in the schema sch, of the catalog cata, for the database whose database metadata object is dbmeta, where dbmeta was created using dmd.

Examples
Type

k = primarykeys(dbmeta,'orcl','SCOTT','DEPT')
MATLAB returns

k = 
    'orcl'    'SCOTT'    'DEPT'    'DEPTNO'    '1'    'PK_DEPT'

In this example:

dbmeta is the database metadata object.
orcl is the catalog cata.
SCOTT is the schema sch.
DEPT is the table tab.

The results show the primary key information as described in the following table.

Column
Description
Value

1
Catalog
orcl

2
Schema
SCOTT

3
Table
DEPT

4
Column name of primary key
DEPTNO

5
Sequence number within primary key
1

6
Primary key name
PK_DEPT

Column	Description	Value
1	Catalog	`orcl`
2	Schema	`SCOTT`
3	Table	`DEPT`
4	Column name of primary key	`DEPTNO`
5	Sequence number within primary key	`1`
6	Primary key name	`PK_DEPT`

See Also
crossreference, dmd, exportedkeys, get, importedkeys

ping procedurecolumns