chaisql/sqltests/SELECT/STRINGS/ltrim.sql

-- setup:
CREATE TABLE test(
    pk INT PRIMARY KEY,
    a TEXT 
);

INSERT INTO test (pk, a) VALUES (1, ' hello '), (2, '!hello!'),  (3, '     !hello!  ');

-- test: LTRIM TEXT default
SELECT LTRIM(a) FROM test;
/* result:
{
    "LTRIM(a)": 'hello '
}
{
    "LTRIM(a)": '!hello!'
}
{
    "LTRIM(a)": '!hello!  '
}
*/


-- test: LTRIM TEXT with param
SELECT LTRIM(a, '!') FROM test;
/* result:
{
    "LTRIM(a, '!')": ' hello '
}
{
    "LTRIM(a, '!')": 'hello!'
}
{
    "LTRIM(a, '!')": '     !hello!  '
}
*/

-- test: LTRIM TEXT with multiple char params
SELECT LTRIM(a, ' !') FROM test;
/* result:
{
    "LTRIM(a, ' !')": 'hello '
}
{
    "LTRIM(a, ' !')": 'hello!'
}
{
    "LTRIM(a, ' !')": 'hello!  '
}
*/


-- test: LTRIM TEXT with multiple char params
SELECT LTRIM(a, 'hel !') FROM test;
/* result:
{
    "LTRIM(a, 'hel !')": 'o '
}
{
    "LTRIM(a, 'hel !')": 'o!'
}
{
    "LTRIM(a, 'hel !')": 'o!  '
}
*/


-- test: LTRIM BOOL
SELECT LTRIM(true);
/* result:
{
    "LTRIM(true)": NULL
}
*/

-- test: LTRIM INT
SELECT LTRIM(42);
/* result:
{
    "LTRIM(42)": NULL
}
*/

-- test: LTRIM DOUBLE
SELECT LTRIM(42.42);
/* result:
{
    "LTRIM(42.42)": NULL
}
*/

-- test: LTRIM STRING wrong param
SELECT LTRIM(' hello ', 42);
/* result:
{
    "LTRIM(' hello ', 42)": NULL
}
*/