tsql - What is the most optimal way of concatenating string values from column to single string? (T-SQL) -

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मेरे पास एक टेबल है

सदस्यमोट (सदस्यआईडी इंट, मोटो नवरचार (100))

मुझे एक ऐसी प्रक्रिया बनाने की आवश्यकता है जो प्रति उपयोगकर्ता मोटो मूल्यों की कोमा से जुड़ी सूची को वापस लौटा देगा।

मैंने निम्नलिखित को बड़ी सफलता के साथ प्रयोग किया है, यह एक एकल उपयोगकर्ता की जानकारी प्राप्त करता है 

  DECLARE @results VARCHAR (MAX) SELECT @Results = COALESCE (@ परिणाम + ',' + मोटो, मोटो) मेम्बंबरमोोटो से सदस्य सदस्य = 1 आर्डर द्वारा मोटो

अब, यदि आप प्रति उपयोगकर्ता प्रति एक बार या उस प्रकृति के बारे में कॉल करना चाहते हैं, तो आप इसे फ़ंक्शन में एक्सट्रपोल कर सकते हैं ।


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