sql - Find a specific column values? -


मेरे पास तालिका event_log है, इसमें फ़ील्ड है id , < कोड> नाम , event_msg , और ip ।

मैं पूरी पंक्ति के बजाय केवल event_msg मूल्य लाने के लिए चाहता हूं

उदाहरण संरचना: 

  | आईडी | नाम | Event_msg | आईपी ​​| | === | ====== | =========== | ========= | | 1 | जोोजो | सर | 127.0.0.1 |

उदाहरण क्वेरी: मैं उस कॉलम में सर मिलान वाले event_msg मानों को प्राप्त करना चाहता हूं

से, आप कर सकते हैं: 

  EventLog.pluck (: event_msg) #select event_logs.event_msg से event_logs # = & gt; ['Msg1', 'msg2']

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