src/Query/FluentQuery.php
public function select_single( $column ) {
		$this->select->also( $this->prepare_column( $column ) );
		$this->select->also( $this->prepare_column( $this->table->get_primary_key() ) );

		$this->select_single = true;

		return $this;
	}
public function select_single( $column ) {
		$this->select->also( $this->prepare_column( $column ) );
		$this->select->also( $this->prepare_column( $this->table->get_primary_key() ) );

		$this->select_single = true;

		return $this;
	}
Select a single column.

Will return a map of primary key -> column value.

@since 1.36.0

@param string $column

@return $this