好的，所以我在MSAccess数据库中有2100个产品，这些产品都分为多个类别。我实际上是将这个列表转移到一个新的magento数据库。我有一个查询来获取这些特定的产品，但我从查询中返回~17k记录，返回的大量记录肯定与多个类别中出现的产品重复。
我确实需要这些类别，以便我可以在新数据库中对它们进行重新分类。
这是我的sql：
SELECT ProductCategory.CategoryID, Products.Code, Products.Name, Products.Keywords, Products.ImageLargePath, Products.Weight, Products.Price, Products.SalePrice, Products.Description, Products.ShortDescription
FROM Products INNER JOIN (Categories INNER JOIN ProductCategory ON Categories.uid = ProductCategory.CategoryID) ON Products.uid = ProductCategory.ProductID
WHERE ProductCategory.CategoryID IN (116, 40, 41, 46, 51, 101, 370, 519, 600, 701, 710, 722, 729, 736, 749, 761, 770, 778, 780, 781, 786, 788, 803, 804, 809, 812, 813, 914, 1097, 1219, 1277, 1320, 1398, 1399, 1400, 1403, 1537, 1742, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 230, 231, 232, 233, 234, 235, 236, 237, 239, 241, 242, 243, 244, 245, 246, 247, 248, 249, 252, 255, 256, 257, 258, 261, 262, 263, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 287, 288, 289, 290, 294, 295, 297, 298, 299, 300, 301, 302, 303, 304, 305, 306, 307, 308, 309, 310, 311, 319, 320, 321, 322, 323, 324, 326, 327, 328, 329, 330, 331, 333, 334, 335, 343, 344, 345, 346, 347, 348, 349, 350, 351, 352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363, 364, 365, 371, 373, 374, 375, 376, 377, 378, 379, 380, 381, 382, 383, 384, 385, 386, 387, 388, 389, 390, 391, 392, 393, 394, 395, 396, 397, 398, 399, 400, 401, 402, 403, 404, 405, 406, 407, 408, 409, 410, 411, 412, 413, 414, 415, 416, 417, 418, 419, 420, 421, 422, 423, 424, 425, 426, 427, 429, 430, 431, 435, 436, 437, 438, 439, 440, 441, 443, 444, 446, 450, 451, 452, 453, 454, 456, 457, 458, 459, 460, 462, 463, 464, 465, 466, 467, 468, 469, 470, 471, 472, 475, 477, 479, 480, 481, 482, 483, 484, 486, 487, 488, 489, 490, 491, 492, 493, 496, 498, 499, 500, 501, 502, 503, 504, 505, 506, 507, 508, 509, 510, 511, 512, 513, 514, 517, 518, 520, 521, 522, 523, 524, 525, 526, 527, 528, 529, 530, 531, 532, 533, 534, 537, 538, 539, 540, 541, 542, 543, 544, 545, 546, 547, 548, 549, 550, 551, 552, 553, 554, 555, 557, 558, 559, 560, 561, 562, 564, 565, 567, 568, 569, 570, 573, 575, 576, 577, 578, 579, 581, 582, 583, 584, 585, 589, 590, 591, 592, 593, 594, 596, 597, 599, 601, 602, 603, 604, 605, 606, 607, 608, 610, 611, 613, 614, 615, 616, 617, 619, 620, 621, 622, 623, 624, 625, 626, 627, 628, 629, 630, 631, 632, 633, 634, 636, 638, 639, 640, 641, 642, 643, 644, 646, 647, 648, 649, 651, 652, 653, 654, 655, 656, 657, 658, 659, 660, 661, 662, 663, 664, 665, 666, 670, 699, 702, 703, 704, 705, 706, 707, 708, 709, 711, 712, 713, 714, 715, 716, 717, 718, 719, 720, 721, 723, 724, 725, 726, 727, 728, 730, 731, 732, 733, 734, 735, 737, 738, 739, 740, 741, 742, 743, 744, 745, 746, 748, 750, 752, 753, 754, 755, 756, 757, 758, 759, 760, 762, 763, 764, 765, 766, 767, 768, 769, 771, 772, 773, 774, 775, 776, 777, 779, 782, 783, 784, 785, 787, 789, 790, 791, 792, 793, 794, 795, 796, 797, 798, 799, 800, 801, 802, 805, 806, 807, 808, 810, 811, 814, 815, 816, 817, 818, 819, 820, 821, 822, 823, 824, 825, 826, 827, 829, 830, 831, 834, 835, 836, 837, 838, 839, 840, 841, 843, 844, 845, 846, 847, 848, 852, 853, 855, 857, 858, 859, 864, 866, 867, 869, 870, 873, 874, 875, 876, 877, 878, 880, 882, 883, 884, 885, 886, 888, 889, 891, 892, 893, 894, 895, 897, 898, 900, 901, 902, 903, 904, 905, 906, 907, 908, 909, 910, 911, 912, 913, 915, 916, 917, 918, 919, 920, 921, 922, 923, 924, 925, 927, 928, 929, 930, 931, 932, 933, 934, 935, 936, 937, 938, 939, 940, 942, 943, 944, 946, 948, 952, 955, 956, 957, 958, 959, 960, 961, 962, 963, 964, 965, 966, 967, 968, 969, 970, 971, 972, 973, 975, 976, 977, 978, 979, 980, 981, 982, 983, 984, 985, 986, 88, 989, 990, 991, 992, 994, 996, 997, 998, 999, 1000, 1001, 1003, 1004, 1005, 1006, 1007, 1008, 1009, 1010, 1011, 1012, 1013, 1014, 1016, 1017, 1018, 1020, 1021, 1022, 1023, 1026, 1027, 1028, 1031, 1032, 1033, 1035, 1037, 1041, 1042, 1043, 1044, 1046, 1047, 1048, 1049, 1050, 1051, 1052, 1053, 1054, 1055, 1056, 1057, 1058, 1059, 1061, 1063, 1064, 1065, 1066, 1067, 1068, 1069, 1070, 1071, 1072, 1073, 1074, 1076, 1077, 1094, 1096, 1098, 1099, 1100, 1101, 1103, 1104, 1105, 1106, 1107, 1146, 1220, 1224, 1225, 1226, 1227, 1228, 1230, 1231, 1232, 1233, 1234, 1235, 1236, 1237, 1238, 1239, 1240, 1241, 1242, 1243, 1244, 1245, 1246, 1247, 1248, 1249, 1250, 1251, 1252, 1253, 1254, 1255, 1256, 1257, 1258, 1259, 1260, 1261, 1262, 1263, 1264, 1265, 1266, 1267, 1268, 1269, 1270, 1271, 1272, 1273, 1274, 1275, 1278, 1281, 1282, 1283, 1285, 1286, 1287, 1288, 1289, 1290, 1291, 1309, 1310, 1319, 1324, 1325, 1326, 1327, 1328, 1329, 1330, 1331, 1332, 1333, 1334, 1335, 1336, 1337, 1338, 1339, 1340, 1341, 1345, 1356, 1357, 1358, 1359, 1360, 1361, 1362, 1363, 1367, 1368, 1369, 1370, 1371, 1372, 1373, 1374, 1375, 1376, 1377, 1378, 1379, 1381, 1382, 1385, 1386, 1387, 1388, 1390, 1393, 1394, 1395, 1396, 1401, 1402, 1404, 1405, 1406, 1407, 1408, 1409, 1410, 1411, 1412, 1413, 1414, 1415, 1416, 1417, 1419, 1420, 1421, 1422, 1423, 1424, 1425, 1426, 1427, 1428, 1429, 1430, 1431, 1432, 1433, 1436, 1438, 1439, 1440, 1441, 1442, 1443, 1444, 1445, 1446, 1447, 1448, 1449, 1451, 1452, 1453, 1454, 1455, 1456, 1457, 1458, 1459, 1461, 1463, 1464, 1467, 1478, 1479, 1480, 1481, 1482, 1483, 1484, 1485, 1486, 1487, 1488, 1489, 1490, 1491, 1492, 1493, 1494, 1495, 1496, 1497, 1498, 1499, 1500, 1501, 1502, 1503, 1505, 1506, 1507, 1508, 1509, 1510, 1511, 1512, 1513, 1514, 1515, 1516, 1517, 1518, 1524, 1527, 1528, 1531, 1532, 1533, 1534, 1535, 1536, 1538, 1539, 1542, 1544, 1545, 1546, 1547, 1548, 1551, 1552, 1553, 1554, 1555, 1556, 1559, 1560, 1561, 1562, 1563, 1564, 1569, 1572, 1573, 1574, 1575, 1576, 1577, 1578, 1579, 1580, 1581, 1582, 1584, 1586, 1587, 1588, 1590, 1591, 1592, 1597, 1598, 1599, 1600, 1601, 1602, 1604, 1606, 1609, 1610, 1611, 1612, 1613, 1614, 1615, 1616, 1617, 1618, 1619, 1620, 1621, 1622, 1623, 1624, 1625, 1626, 1627, 1628, 1629, 1630, 1631, 1632, 1633, 1638, 1639, 1640, 1641, 1642, 1643, 1644, 1645, 1646, 1647, 1648, 1650, 1671, 1672, 1674, 1675, 1676, 1677, 1678, 1679, 1680, 1681, 1682, 1684, 1685, 1686, 1687, 1688, 1689, 1690, 1691, 1692, 1693, 1694, 1695, 1696, 1697, 1706, 1708, 1709, 1710, 1711, 1712, 1713, 1714, 1715, 1717, 1718, 1719, 1720, 1721, 1730, 1731, 1732, 1733, 1734, 1735, 1736, 1737, 1738, 1739, 1740, 1741, 1743, 1744, 1759)
ORDER BY ProductCategory.CategoryID;
有没有人对可能在结果中合并类别ID有任何建议？
最大的问题是csv将产品导入magento db的格式在一列中列出了多个categoryID，即[104,40,12]，而不是一次只列出一个。我会很好地坐在那里把它们放在一起，这只是17k的结果显然对我来说太复杂并且粘贴到csv中了，然后我可以编辑并导入到magento中。
感谢任何帮助人员：）
答案 0 :(得分：1)
您是否只能在单独的查询中复制产品，类别和它们之间的链接？
您现在所做的就是压扁所有数据。这确实会导致更多的行，但这是有道理的，因为产品属于多个类别，就像你说的那样。
我非常强烈建议不要在单个值中存储单独的id列表。您在Access中的当前交联 junction table要好得多。如果在一列中存储多个类别ID，则无法构建约束甚至是正常连接。真不好的主意。
也就是说，无论如何你都需要做这样的事情，MySQL有一个函数GROUP_CONCAT，它允许你将值组合在一个值中。因此，您需要先将数据复制到MySQL，然后更改MySQL中的结构，否则您必须找到该函数的Access对应物。为此，请先阅读this question。
答案 1 :(得分：0)
或者，您可以直接从Access将表格和数据发送到MySQL，例如在Access 2013中，您可以转到外部数据 - >导出 - >更多 - ＆gt; ODBC数据库并按照向导进行操作，只需注意您需要与事先创建的MySQL数据库建立ODBC连接。