sql - what's order when select data from database? -


मान लीजिए मेरे पास एक टेबल है: 

  बनाओ टेबल [टैब] ([name] varchar , [Order_by] int)

तालिका में 10 पंक्तियाँ हैं, और सभी पंक्तियों के क्रम के लिए समान मूल्य हैं (मान लें कि यह 0 है)

एसक्यूएल के बाद: [order_by]

[tab] से [tab] आदेश से चुनें * चुनें * पंक्तियों का क्रम क्या है? क्या इस मामले में पंक्ति आदेश का निर्धारण किया जाता है?

यह परिभाषित नहीं है डेटाबेस उनको किसी भी क्रम में थूक सकता है, और यह प्रश्नों के बीच क्रम को भी बदल सकता है यदि ऐसा लगता है (यह संभवतः ऐसा नहीं करेगा, लेकिन आपको ऑर्डर के अनुरूप होने पर भरोसा नहीं करना चाहिए)।


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