mariadb/mysql-test/t/sp.test

#
# Basic stored PROCEDURE tests
#
#

use test;

--disable_warnings
drop table if exists t1;
drop table if exists t2;
--enable_warnings

create table t1 (
	id   char(16) not null,
        data int not null
);
create table t2 (
	s   char(16) not null,
        i   int not null,
	d   double not null
);


# Single statement, no params.
create procedure foo42()
  insert into test.t1 values ("foo", 42);

call foo42();
select * from t1;
delete from t1;
drop procedure foo42;


# Single statement, two IN params.
create procedure bar(x char(16), y int)
  insert into test.t1 values (x, y);

call bar("bar", 666);
select * from t1;
delete from t1;
# Don't drop procedure yet...


# Now for multiple statements...
delimiter |;

# Two statements.
create procedure two(x1 char(16), x2 char(16), y int)
begin
  insert into test.t1 values (x1, y);
  insert into test.t1 values (x2, y);
end|

call two("one", "two", 3)|
select * from t1|
delete from t1|
drop procedure two|


# Simple test of local variables and SET.
create procedure locset(x char(16), y int)
begin
  declare z1, z2 int;
  set z1 = y;
  set z2 = z1+2;
  insert into test.t1 values (x, z2);
end|

call locset("locset", 19)|
select * from t1|
delete from t1|
drop procedure locset|


# The peculiar (non-standard) mixture of variables types in SET.
create procedure mixset(x char(16), y int)
begin
  declare z int;

  set @z = y, z = 666, max_join_size = 100;
  insert into test.t1 values (x, z);
end|

call mixset("mixset", 19)|
show variables like 'max_join_size'|
select id,data,@z from t1|
delete from t1|
drop procedure mixset|


# Multiple CALL statements, one with OUT parameter.
create procedure zip(x char(16), y int)
begin
  declare z int;
  call zap(y, z);
  call bar(x, z);
end|

# SET local variables and OUT parameter.
create procedure zap(x int, out y int)
begin
  declare z int;
  set z = x+1, y = z;
end|

call zip("zip", 99)|
select * from t1|
delete from t1|
drop procedure zip|
drop procedure zap|
drop procedure bar|


# INOUT test
create procedure iotest(x1 char(16), x2 char(16), y int)
begin
  call inc2(x2, y);
  insert into test.t1 values (x1, y);
end|

create procedure inc2(x char(16), y int)
begin
  call inc(y);
  insert into test.t1 values (x, y);
end|

create procedure inc(inout io int)
  set io = io + 1|

call iotest("io1", "io2", 1)|
select * from t1|
delete from t1|
drop procedure iotest|
drop procedure inc2|
drop procedure inc|


# Call-by-value test
#  The expected result is:
#    ("cbv2", 4)
#    ("cbv1", 4711)
create procedure cbv1()
begin
  declare y int;

  set y = 3;
  call cbv2(y+1, y);
  insert into test.t1 values ("cbv1", y);
end|

create procedure cbv2(y1 int, inout y2 int)
begin
  set y2 = 4711;
  insert into test.t1 values ("cbv2", y1);
end|

call cbv1()|
select * from t1|
delete from t1|
drop procedure cbv1|
drop procedure cbv2|


# Basic tests of the flow control constructs

# Just test on 'x'...
create procedure a0(x int)
while x do
  set x = x-1;
  insert into test.t1 values ("a0", x);
end while|

call a0(3)|
select * from t1|
delete from t1|
drop procedure a0|


# The same, but with a more traditional test.
create procedure a(x int)
while x > 0 do
  set x = x-1;
  insert into test.t1 values ("a", x);
end while|

call a(3)|
select * from t1|
delete from t1|
drop procedure a|


# REPEAT
create procedure b(x int)
repeat
  insert into test.t1 values (repeat("b",3), x);
  set x = x-1;
until x = 0 end repeat|

call b(3)|
select * from t1|
delete from t1|
drop procedure b|


# Check that repeat isn't parsed the wrong way
create procedure b2(x int)
repeat(select 1 into outfile 'b2');
  insert into test.t1 values (repeat("b2",3), x);
  set x = x-1;
until x = 0 end repeat|

# We don't actually want to call it.
drop procedure b2|


# Btw, this should generate an error (for now; this might change in the future)
--error 1259
create procedure b3(x int)
repeat
  select * from test.t1;	# No INTO!
  insert into test.t1 values (repeat("b3",3), x);
  set x = x-1;
until x = 0 end repeat|


# Labelled WHILE with ITERATE (pointless really)
create procedure c(x int)
hmm: while x > 0 do
  insert into test.t1 values ("c", x);
  set x = x-1;
  iterate hmm;
  insert into test.t1 values ("x", x);
end while hmm|

call c(3)|
select * from t1|
delete from t1|
drop procedure c|


# Labelled WHILE with LEAVE
create procedure d(x int)
hmm: while x > 0 do
  insert into test.t1 values ("d", x);
  set x = x-1;
  leave hmm;
  insert into test.t1 values ("x", x);
end while hmm|

call d(3)|
select * from t1|
delete from t1|
drop procedure d|


# LOOP, with simple IF statement
create procedure e(x int)
foo: loop
  if x = 0 then
    leave foo;
  end if;
  insert into test.t1 values ("e", x);
  set x = x-1;
end loop foo|

call e(3)|
select * from t1|
delete from t1|
drop procedure e|


# A full IF statement
create procedure f(x int)
if x < 0 then
  insert into test.t1 values ("f", 0);
elseif x = 0 then
  insert into test.t1 values ("f", 1);
else
  insert into test.t1 values ("f", 2);
end if|

call f(-2)|
call f(0)|
call f(4)|
select * from t1|
delete from t1|
drop procedure f|


# This form of CASE is really just syntactic sugar for IF-ELSEIF-...
create procedure g(x int)
case
when x < 0 then
  insert into test.t1 values ("g", 0);
when x = 0 then
  insert into test.t1 values ("g", 1);
else
  insert into test.t1 values ("g", 2);
end case|

call g(-42)|
call g(0)|
call g(1)|
select * from t1|
delete from t1|
drop procedure g|


# The "simple CASE"
create procedure h(x int)
case x
when 0 then
  insert into test.t1 values ("h0", x);
when 1 then
  insert into test.t1 values ("h1", x);
else
  insert into test.t1 values ("h?", x);
end case|

call h(0)|
call h(1)|
call h(17)|
select * from t1|
delete from t1|
drop procedure h|


# A "real" procedure example

--disable_warnings
drop table if exists fac|
--enable_warnings
create table fac (n int unsigned not null primary key, f bigint unsigned)|

create procedure ifac(n int unsigned)
begin
  declare i int unsigned;
  set i = 1;
  if n > 20 then
    set n = 20;
  end if;
  while i <= n do
    begin
      declare f bigint unsigned;
      set f = 0;       # Temp. fix, this should not be needed in the future.
      call fac(i, f);
      insert into test.fac values (i, f);
      set i = i + 1;
    end;
  end while;
end|

create procedure fac(n int unsigned, out f bigint unsigned)
begin
  set f = 1;
  while n > 1 do
    set f = f * n;
    set n = n - 1;
  end while;
end|

call ifac(20)|
select * from fac|
drop table fac|
drop procedure ifac|
drop procedure fac|


# SELECT INTO local variables
create procedure into_test(x char(16), y int)
begin
  insert into test.t1 values (x, y);
  select id,data into x,y from test.t1 limit 1;
  insert into test.t1 values (concat(x, "2"), y+2);
end|

call into_test("into", 100)|
select * from t1|
delete from t1|
drop procedure into_test|


# SELECT INTO with a mix of local and global variables
create procedure into_test2(x char(16), y int)
begin
  insert into test.t1 values (x, y);
  select id,data into x,@z from test.t1 limit 1;
  insert into test.t1 values (concat(x, "2"), y+2);
end|

call into_test2("into", 100)|
select id,data,@z from t1|
delete from t1|
drop procedure into_test2|


# These two (and the two procedures above) caused an assert() to fail in
# sql_base.cc:lock_tables() at some point.

create procedure into_outfile(x char(16), y int)
begin
  insert into test.t1 values (x, y);
  select * into outfile "/tmp/spout" from test.t1;
  insert into test.t1 values (concat(x, "2"), y+2);
end|

system rm -f /tmp/spout|
call into_outfile("ofile", 1)|
system rm -f /tmp/spout|
delete from t1|
drop procedure into_outfile|

create procedure into_dumpfile(x char(16), y int)
begin
  insert into test.t1 values (x, y);
  select * into dumpfile "/tmp/spdump" from test.t1 limit 1;
  insert into test.t1 values (concat(x, "2"), y+2);
end|

system rm -f /tmp/spdump|
call into_dumpfile("dfile", 1)|
system rm -f /tmp/spdump|
delete from t1|
drop procedure into_dumpfile|


create procedure create_select(x char(16), y int)
begin
  insert into test.t1 values (x, y);
  create table test.t2 select * from test.t1;
  insert into test.t2 values (concat(x, "2"), y+2);
end|

# This doesn't work right now. It suffers from the same problem as the ones
# above, but the fix caused create.test to hang. :-(
#call create_select("cs", 90)|
#select * from t1, t2|
#delete from t1|
#drop table t2|
drop procedure create_select|

# Check that we get the right error, i.e. UDF declaration parses correctly,
# but foo.so doesn't exist.
# QQ This generates an error message containing a misleading errno which
#    might vary between systems (it usually doesn't have anything to do with
#    the actual failing dlopen()).
#--error 1126
#create function foo returns real soname "foo.so"|

# A minimal, constant FUNCTION.
create function e() returns double
  return 2.7182818284590452354|

set @e = e()|
select e(), @e|

# A minimal function with one argument
create function inc(i int) returns int
  return i+1|

select inc(1), inc(99), inc(-71)|

# A minimal function with two arguments
create function mul(x int, y int) returns int
  return x*y|

select mul(1,1), mul(3,5), mul(4711, 666)|

# A minimal string function
create function append(s1 char(8), s2 char(8)) returns char(16)
  return concat(s1, s2)|

select append("foo", "bar")|

# A function with flow control
create function fac(n int unsigned) returns bigint unsigned
begin
  declare f bigint unsigned;

  set f = 1;
  while n > 1 do
    set f = f * n;
    set n = n - 1;
  end while;
  return f;
end|

select fac(1), fac(2), fac(5), fac(10)|

# Nested calls
create function fun(d double, i int, u int unsigned) returns double
  return mul(inc(i), fac(u)) / e()|

select fun(2.3, 3, 5)|


# Various function calls in differen statements

insert into t2 values (append("xxx", "yyy"), mul(4,3), e())|
insert into t2 values (append("a", "b"), mul(2,mul(3,4)), fun(1.7, 4, 6))|

# These don't work yet.
select * from t2 where s = append("a", "b")|
select * from t2 where i = mul(4,3) or i = mul(mul(3,4),2)|
select * from t2 where d = e()|
select * from t2|
delete from t2|

drop function e|
drop function inc|
drop function mul|
drop function append|
drop function fac|
drop function fun|

delimiter ;|
drop table t1;
drop table t2;