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function random_text( $type = 'alnum', $length = 8 ) | |
{ | |
switch ( $type ) { | |
case 'alnum': | |
$pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'; | |
break; | |
case 'alpha': | |
$pool = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'; | |
break; | |
case 'hexdec': |
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Sql QuerySet Notes | |
SELECT count(*) FROM fruit Fruits.objects.count() table count | |
SELECT count(*) FROM fruit WHERE name=’Orange’ Fruits.objects.filter(name__exact=’Orange’).count() count with filter | |
SELECT * FROM fruit WHERE color is NULL Fruits.objects.get(color__isnull=True) filter by null | |
SELECT * FROM fruit WHERE color is NOT NULL Fruits.objects.get(color__isnull=False) filter by null | |
SELECT * FROM fruit WHERE name=’Apple’ Fruits.objects.get(name__exact=’Apple’) case sensitive | |
SELECT * FROM fruit WHERE lower(name)=lower(‘Apple’) Fruits.objects.get(name__iexact=’Apple’) case in-sensitive | |
SELECT * FROM fruit WHERE name LIKE ‘App%’ Fruits.objects.filter(name__startswith=’App’) case sensitive LIKE | |
SELECT * FROM fruit WHERE upper(name) LIKE ‘APP%’ Fruits.objects.filter(name__ista |