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8.95. sequencesetvalue(integer, integer, bigint, bigint)

Function Properties

PLPGSQLinteger
sequenceSetValue (seq_id, seq_origin, ev_seqno, last_value) Set sequence seq_id to have new value last_value.
    declare
    	p_seq_id			alias for $1;
    	p_seq_origin		alias for $2;
    	p_ev_seqno			alias for $3;
    	p_last_value		alias for $4;
    	v_fqname			text;
    begin
    	-- ----
    	-- Get the sequences fully qualified name
    	-- ----
    	select slon_quote_brute(PGN.nspname) || '.' ||
    			slon_quote_brute(PGC.relname) into v_fqname
    		from sl_sequence SQ,
    			"pg_catalog".pg_class PGC, "pg_catalog".pg_namespace PGN
    		where SQ.seq_id = p_seq_id
    			and SQ.seq_reloid = PGC.oid
    			and PGC.relnamespace = PGN.oid;
    	if not found then
    		raise exception 'Slony-I: sequenceSetValue(): sequence % not found', p_seq_id;
    	end if;
    
    	-- ----
    	-- Update it to the new value
    	-- ----
    	execute 'select setval(''' || v_fqname ||
    			''', ' || p_last_value::text || ')';
    
    	insert into sl_seqlog
    			(seql_seqid, seql_origin, seql_ev_seqno, seql_last_value)
    			values (p_seq_id, p_seq_origin, p_ev_seqno, p_last_value);
    
    	return p_seq_id;
    end;

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