psoo / plsql-postgresql-converter

Tool for automated conversion of Oracle PL/SQL procedural code to PostgreSQL PL/pgSQL

plsql-postgresql-converter

Tool for automated conversion of Oracle PL/SQL procedural code to PostgreSQL PL/pgSQL

Building

To build, use Ant:

$ cd converter
$ ant

Examples

Help page:

$ converter/output/plsqlconvert --help
Usage: plsqconverter [options]

  --help
  --all-packages
  --validate-reparse
  --validate-reparse-ast-path
  --limit-all-packages <N>
  --tree-type (sql_script|statement|expression)
  --input-sql (path|-)
  --input-xml (path|-)
  --input-serialized path
  --convert
  --use-pgsql
  --split-output
    (in this case --output-sql, --output-ast are templates:
      {i} is replaced by item index,
      {t} is replaced by item type,
      {n} is replaced by item name
      e.g., --output-sql '{i}_{t}_{n}.sql'
  --output-sql (path|-)
  --output-ast (path|-)
  --output-xml (path|-)
  --output-serialized path
  --debug

Conversion of a single SQL statement:

$ echo 'select t1.x from Table1 t1, Table2 t2, Table3 t3 where t1.t3_id (+) = t3.id and t1.x = t2.y' |
  output/plsqlconvert --tree-type statement --input-sql - --output-sql - --convert --use-pgsql 2>/dev/null

Output:

select t1.x
from Table2 t2,
  Table3 t3
left join Table1 t1 on t1.t3_id = t3.id
where t1.x = t2.y

Conversion of stored function:

$ cat example.txt
CREATE OR REPLACE FUNCTION totalCustomers
RETURN number IS
   total number(2) := 0;
   ts date;
BEGIN

   ts := add_years(now(), 1);

   SELECT count(*) into total
   FROM customers;
   
   RETURN total;
END;
$ converter/output/plsqlconvert --tree-type sql_script --input-sql example.txt --output-sql - --convert --use-pgsql 2>/dev/null

create or replace function totalCustomers ()
returns numeric

as $$
#variable_conflict use_column
declare
  total smallint default 0;
  ts timestamp;
begin
  ts := cast(now() as timestamp) + 1 * interval '1 year';
  select count(*)
  into strict total
  from customers
  ;
  return total;
end;
$$
language plpgsql;