Check psql validity function

CREATE OR REPLACE FUNCTION is_sql(sql text) returns boolean
    language plpgsql
AS
$$
DECLARE
    exception_message text;
    exception_context text;
BEGIN
    BEGIN
        EXECUTE E'DO $IS_SQL$ BEGIN\nRETURN;\n' || trim(trailing E'; \r\n' from sql) || E';\nEND; $IS_SQL$;';
    EXCEPTION WHEN syntax_error THEN
        GET STACKED DIAGNOSTICS
            exception_message = MESSAGE_TEXT,
            exception_context = PG_EXCEPTION_CONTEXT;
        RAISE NOTICE '%', exception_context;
        RAISE NOTICE '%', exception_message;
        RETURN FALSE;
    END;
    RETURN TRUE;
END
$$;

-- TEST
SELECT is_sql('SELECTx'), is_sql('SELECT x');

Source: raw.githubusercontent.com

Similar codes

0 vote282 views3 answers
Mysql delete if not in another table
SQL
3 votes273 views2 answers
Sqlite show table definition
SQL
12 votes271 views3 answers
Duplicate a column in sql
SQL
1 vote324 views1 answer
Postgresql where datetrunc month and year equal
SQL
1 vote277 views1 answer
Load sql into mamp
SQL
0 vote309 views1 answer
The fetch keyword oracle
SQL
0 vote289 views1 answer
Postgresql interview questions
SQL
1 vote292 views1 answer
Is sql fast
SQL
3 votes283 views2 answers
Oracle apex view logs
SQL
2 votes273 views2 answers
Postgres set user as superuser
SQL