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#!/usr/bin/env tarantool
test = require("sqltester")
test:plan(9)
--!./tcltestrunner.lua
-- 2009 November 10
--
-- The author disclaims copyright to this source code. In place of
-- a legal notice, here is a blessing:
--
-- May you do good and not evil.
-- May you find forgiveness for yourself and forgive others.
-- May you share freely, never taking more than you give.
--
-------------------------------------------------------------------------
-- Additional test cases for the COALESCE() and IFNULL() functions.
--
-- ["set","testdir",[["file","dirname",["argv0"]]]]
-- ["source",[["testdir"],"\/tester.tcl"]]
test:do_test(
"coalesce-1.0",
function()
return test:execsql [[
CREATE TABLE t1(a INTEGER PRIMARY KEY, b INT, c INT, d INT);
INSERT INTO t1 VALUES(1, null, null, null);
INSERT INTO t1 VALUES(2, 2, 99, 99);
INSERT INTO t1 VALUES(3, null, 3, 99);
INSERT INTO t1 VALUES(4, null, null, 4);
INSERT INTO t1 VALUES(5, null, null, null);
INSERT INTO t1 VALUES(6, 22, 99, 99);
INSERT INTO t1 VALUES(7, null, 33, 99);
INSERT INTO t1 VALUES(8, null, null, 44);
SELECT coalesce(b,c,d) FROM t1 ORDER BY a;
]]
end, {
-- <coalesce-1.0>
"", 2, 3, 4, "", 22, 33, 44
-- </coalesce-1.0>
})
test:do_test(
"coalesce-1.1",
function()
return test:execsql [[
SELECT coalesce(d+c+b,d+c,d) FROM t1 ORDER BY a;
]]
end, {
-- <coalesce-1.1>
"", 200, 102, 4, "", 220, 132, 44
-- </coalesce-1.1>
})
test:do_test(
"coalesce-1.2",
function()
return test:execsql [[
SELECT ifnull(d+c+b,ifnull(d+c,d)) FROM t1 ORDER BY a;
]]
end, {
-- <coalesce-1.2>
"", 200, 102, 4, "", 220, 132, 44
-- </coalesce-1.2>
})
test:do_test(
"coalesce-1.3",
function()
return test:execsql [[
SELECT ifnull(ifnull(d+c+b,d+c),d) FROM t1 ORDER BY a;
]]
end, {
-- <coalesce-1.3>
"", 200, 102, 4, "", 220, 132, 44
-- </coalesce-1.3>
})
test:do_test(
"coalesce-1.4",
function()
return test:execsql [[
SELECT ifnull(ifnull(b,c),d) FROM t1 ORDER BY a;
]]
end, {
-- <coalesce-1.4>
"", 2, 3, 4, "", 22, 33, 44
-- </coalesce-1.4>
})
test:do_test(
"coalesce-1.5",
function()
return test:execsql [[
SELECT ifnull(b,ifnull(c,d)) FROM t1 ORDER BY a;
]]
end, {
-- <coalesce-1.5>
"", 2, 3, 4, "", 22, 33, 44
-- </coalesce-1.5>
})
test:do_test(
"coalesce-1.6",
function()
return test:execsql [[
SELECT coalesce(b,NOT b,-b,abs(b),lower(b),length(b),LEAST(b,5),b*123,c)
FROM t1 ORDER BY a;
]]
end, {
-- <coalesce-1.6>
"", 2, 3, "", "", 22, 33, ""
-- </coalesce-1.6>
})
test:do_test(
"coalesce-1.7",
function()
return test:execsql [[
SELECT ifnull(nullif(a,4),99)
FROM t1 ORDER BY a;
]]
end, {
-- <coalesce-1.7>
1, 2, 3, 99, 5, 6, 7, 8
-- </coalesce-1.7>
})
test:do_test(
"coalesce-1.8",
function()
return test:execsql [[
SELECT coalesce(
CASE WHEN b=2 THEN 123 END,
CASE WHEN b=3 THEN 234 END,
CASE WHEN c=3 THEN 345 WHEN c=33 THEN 456 END,
d
)
FROM t1 ORDER BY a;
]]
end, {
-- <coalesce-1.8>
"", 123, 345, 4, "", 99, 456, 44
-- </coalesce-1.8>
})
test:finish_test()
|
