{"id":1217,"date":"2022-07-11T16:50:24","date_gmt":"2022-07-11T08:50:24","guid":{"rendered":"http:\/\/175.24.184.226\/?p=1217"},"modified":"2022-07-11T16:50:24","modified_gmt":"2022-07-11T08:50:24","slug":"python%e6%95%b0%e6%8d%ae%e5%ba%93%ef%bc%9a%e4%bb%a5%e5%ad%97%e5%85%b8%e5%bd%a2%e5%bc%8f%e8%bf%94%e5%9b%9e","status":"publish","type":"post","link":"\/?p=1217","title":{"rendered":"python\u6570\u636e\u5e93\uff1a\u4ee5\u5b57\u5178\u5f62\u5f0f\u8fd4\u56de"},"content":{"rendered":"

\u5728django\u4e2d\u6267\u884c\u81ea\u5b9a\u4e49\u8bed\u53e5\u7684\u65f6\u5019\uff0c\u8fd4\u56de\u7684\u7ed3\u679c\u662f\u4e00\u4e2atuple ,\u5e76\u6211\u4e0d\u662f\u6211\u6240\u671f\u671b\u7684dict.<\/p>\n

\u5f53\u7ed3\u679c\u662ftuple \u65f6\uff0c\u5982\u679c\u8981\u53d6\u5f97\u6570\u636e\uff0c\u5fc5\u987b\u77e5\u9053\u5bf9\u5e94\u6570\u636e\u5728\u7ed3\u679c\u96c6\u4e2d\u7684\u5e8f\u53f7,\u7528\u5e8f\u53f7\u7684\u65b9\u5f0f\u53bb\u5f97\u5230\u503c\u3002<\/p>\n

\u5982\u679c\u662fpython\u4e0emysql \u6216pgsql\u65b9\u5f0f,\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u5f97\u5230dict\u7ed3\u679c:<\/p>\n

\n

mysql:<\/code><\/p>\n

import pymysql\n\ndef connectMysql(self):\n    """\n    Mysql\u6570\u636e\u5e93\u8fde\u63a5\n    """\n    for _ in range(10):\n        try:\n\n            conn = pymysql.connect(**self.base_info)\n            # \u8fd4\u56de\u5b57\u5178\u683c\u5f0f\u7684\u6570\u636e\n            cursor = conn.cursor(pymysql.cursors.DictCursor)\n            return conn, cursor\n        except Exception as err:\n            logger.exception("\u6570\u636e\u5e93\u8fde\u63a5\u5931\u8d25,  %s" % err)\n            return None, None<\/code><\/pre>\n
\n
postgresql:<\/code><\/p>\n
import psycopg2\nimport psycopg2.extras\ndef connectPostgreSQL(self):\n    """\n    PG\u5e93\u8fde\u63a5\n    """\n    for _ in range(10):\n        try:\n            conn = psycopg2.connect(**self.base_info)\n            cursor = conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor)\n            return conn, cursor\n        except Exception as err:\n            logger.exception("\u6570\u636e\u5e93\u8fde\u63a5\u5931\u8d25,  %s" % err)\n            return None, None<\/code><\/pre>\n
\u800c\u5728django\u4e2d\uff0c\u7528\u7c7b\u4f3c\u7684\u65b9\u6cd5\u6d4b\u8bd5\uff1a<\/p>\n
from django.db import connection\n\nimport MySQLdb\n\n.......\n\ncursor = connection.cursor(cursorclass = MySQLdb.cursors.DictCursor)\n\ncursor.execute(sql,None)\n<\/code><\/pre>\n
\u7ed3\u679c\u62a5\u9519\uff0c\u6ca1\u6709cursorclass \u8fd9\u4e2a\u53c2\u6570\uff0c\u8bf4\u660e django \u5728\u5c01\u88c5\u7684\u65f6\u5019\uff0c\u6ca1\u6709\u8fd9\u4e2a\u9009\u9879\u3002<\/p>\n
\u65e2\u7136\u6ca1\u6709\u8fd9\u4e2a\u9009\u9879\uff0c\u5c31\u53ea\u80fd\u81ea\u5df1\u53bb\u5b9e\u73b0\u4e86\uff0c\u6839\u636ecursor\u4e2d\u7684 description \u5f97\u5230\u5404\u67e5\u8be2\u7684\u5b57\u6bb5\u540d\uff0c\u7136\u540e\u518d\u6839\u636e\u5f97\u5230\u7684\u7ed3\u679c\uff0c\u628a\u8fd9\u4e24\u4e2a\u62fc\u51d1\u8d77\u6765\u5f97\u5230\u7ed3\u679c\u3002<\/p>\n
\u5c01\u88c5\uff1a<\/strong><\/p>\n
from django.db import connection\n\ntry:\n    with connection.cursor() as cursor:\n        cursor.execute(sql)\n        # \u83b7\u53d6\u5b57\u6bb5\u540d\u79f0\n        col_names = [desc[0] for desc in cursor.description]\n        results = cursor.fetchall()\n        rows = []\n        for result in results:\n            row = dict(zip(col_names, result))\n            rows.append(row)\n            cursor.execute(sql_total)\n            total = cursor.fetchall()\n            connection.commit()\n    except Exception as e:\n        logger.error(e)\n        logger.error(sql)<\/code><\/pre>\n
\u603b\u7ed3\uff1a\u5982\u679c\u7528 django \u4e0d\u662f\u590d\u6742\u7684SQL \u67e5\u8be2\uff0c\u5c3d\u91cf\u7528 orm \u53bb\u5b8c\u6210\u3002\u5982\u679c\u662f\u6bd4\u8f83\u590d\u6742\u7684SQL\u8bed\u53e5\uff0c\u6d89\u53ca\u5230\u5f88\u591a\u8868\uff0c\u800c\u4e14\u5e76\u4e0d\u5b8c\u5168\u6ee1\u8db3django \u7684foregion key ,\u751a\u81f3\u662f\u591a\u4e2a primary key \u5bf9\u5e94\u7684\u8bdd\uff0c\u5c31\u81ea\u5df1\u7528 \u539f\u751f\u7684SQL \u53bb\u5b8c\u6210\u3002\u53ef\u80fd\u4f1a\u66f4\u597d\uff0c\u4f46\u5728\u751f\u6210\u5b57\u5178\u7684\u65f6\u5019\uff0c\u6570\u636e\u91cf\u4e0d\u8981\u592a\u5927\uff0c\u6ca1\u6d4b\u8bd5\u8fc7\u592a\u5927\u4f1a\u6709\u4ec0\u4e48\u6027\u80fd\u95ee\u9898\u3002\u4f46\u5bf9\u4e8e\u5c0f\u6570\u636e\u91cf\uff0c\u80af\u5b9a\u6ca1\u95ee\u9898\uff0c\u57fa\u672c\u4e0d\u7528\u8003\u8651\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5728django\u4e2d\u6267\u884c\u81ea\u5b9a\u4e49\u8bed\u53e5\u7684\u65f6\u5019\uff0c\u8fd4\u56de\u7684\u7ed3\u679c\u662f\u4e00\u4e2atuple ,\u5e76\u6211\u4e0d\u662f\u6211\u6240\u671f\u671b\u7684dict. \u5f53\u7ed3\u679c\u662ftuple \u65f6\uff0c\u5982\u679c\u8981\u53d6\u5f97\u6570\u636e   \u2026 …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[33],"tags":[],"_links":{"self":[{"href":"\/index.php?rest_route=\/wp\/v2\/posts\/1217"}],"collection":[{"href":"\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1217"}],"version-history":[{"count":1,"href":"\/index.php?rest_route=\/wp\/v2\/posts\/1217\/revisions"}],"predecessor-version":[{"id":1218,"href":"\/index.php?rest_route=\/wp\/v2\/posts\/1217\/revisions\/1218"}],"wp:attachment":[{"href":"\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1217"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1217"},{"taxonomy":"post_tag","embeddable":true,"href":"\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1217"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}