# Class PgOid (3.7.0-rc)

3.7.0-rc 3.6.0 (latest) 3.5.0 3.4.0 3.3.0 3.2.0 2.48.0-rc 2.47.1 2.46.0 2.45.0 2.44.0 2.43.0 2.42.0 2.41.0 2.40.0 2.39.0 2.38.0 2.37.0 2.36.0 2.35.0 2.34.0 2.33.0 2.32.0 2.31.0 2.30.0 2.29.0 2.28.0 2.27.0 2.26.0 2.25.1 2.24.0 2.23.0 2.22.1 2.21.0 2.20.0 2.19.0 2.18.0 2.17.0 2.16.0 2.15.1 2.14.0 2.13.0 2.12.0 2.11.0 A representation of the PostgreSQL Object Identifier (OID) type: used as primary keys for various system tables in the PostgreSQL dialect.

## Constructors

### PgOid(PgOid const \&)

Regular value type, supporting copy, assign, move.

| **Parameter** ||
|---|---|
| **Name** | **Description** |
|   | `PgOid const &` |

### PgOid(PgOid \&\&)

Regular value type, supporting copy, assign, move.

| **Parameter** ||
|---|---|
| **Name** | **Description** |
|   | `PgOid &&` |

### PgOid()

Default construction yields OID 0.

### PgOid(std::uint64_t)

Construction from an OID unsigned four-byte integer.

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `value` | `std::uint64_t` |

## Operators

### operator=(PgOid const \&)

Regular value type, supporting copy, assign, move.

| **Parameter** ||
|---|---|
| **Name** | **Description** |
|   | `PgOid const &` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `PgOid &` |   |

### operator=(PgOid \&\&)

Regular value type, supporting copy, assign, move.

| **Parameter** ||
|---|---|
| **Name** | **Description** |
|   | `PgOid &&` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `PgOid &` |   |

### operator std::uint64_t() const

Conversion to an OID unsigned four-byte integer.