What is the best way for selecting 2 row from table in one row?

I found best answer for PostgreSQL in this link https://www.postgresql.org/docs/9.2/static/tablefunc.html In PostgreSQL there is the crosstab(text) function.

The crosstab function is used to produce "pivot" displays, wherein data is listed across the page rather than down. For example, we might have data like

row1    val11
row1    val12
row1    val13
...
row2    val21
row2    val22
row2    val23
...

which we wish to display like

row1    val11   val12   val13   ...
row2    val21   val22   val23   ...
...

The crosstab function takes a text parameter that is a SQL query producing raw data formatted in the first way, and produces a table formatted in the second way. The sql parameter is a SQL statement that produces the source set of data. This statement must return one row_name column, one category column, and one value column. N is an obsolete parameter, ignored if supplied (formerly this had to match the number of output value columns, but now that is determined by the calling query). For example, the provided query might produce a set something like:

row_name    cat    value
----------+-------+-------
  row1      cat1    val1
  row1      cat2    val2
  row1      cat3    val3
  row1      cat4    val4
  row2      cat1    val5
  row2      cat2    val6
  row2      cat3    val7
  row2      cat4    val8

The crosstab function is declared to return setof record, so the actual names and types of the output columns must be defined in the FROM clause of the calling SELECT statement, for example:

SELECT * FROM crosstab('...') AS ct(row_name text, category_1 text, category_2 text);

This example produces a set something like:

           <== value  columns  ==>
 row_name   category_1   category_2
----------+------------+------------
  row1        val1         val2
  row2        val5         val6

For more read section F.35.1.2. in URL entered top of the answer