sql - round a version in PostgreSQL -


i need round off version column , round() works decimal, doesn't works on 7.3.1

dbtype        version ------------------------ postgresql     7.3.1 oracle         11.2.0.4.0 oracle         12.4.5

my desired output 

postgresql 7 oracle     11 oracle     12

you convert array: 

select dbtype, (string_to_array(version, '.'))[1] the_table

or use split_part:

select dbtype, split_part(version, '.', 1) the_table

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