Най-бързият начин за извършване на вложени групови вмъквания с използване на scope_identity()?

Писах нещо подобно и преди, но в крайна сметка не получих възможността да го тествам за производителност.
За да вмъкна данни в две свързани таблици, използвах една съхранена процедура и някои T-SQL трикове като параметри с таблица, клауза за сливане и изход.
Ето примерен скрипт:

Първо създайте примерните таблици:tblBase и tblRelated са свързани с един към много външен ключ.

CREATE TABLE tblBase 
(
    base_id int identity(1,1) primary key, 
    base_data int
); 

CREATE TABLE tblRelated
(
    related_base_id int foreign key references tblBase (base_id), 
    related_Id int identity(1,1) primary key, 
    related_data int
);

Сега, когато имаме примерни таблици, можем да започнем да създаваме съхранената процедура за вмъкване.

Създайте дефинирани от потребителя типове таблици:
За тази съхранена процедура трябва да използваме три типа таблици, дефинирани от потребителя:
един за основната таблица,
един за свързаната таблица,
и един за съпоставяне на временния идентификатор към присвоения от базата данни идентификатор.

CREATE TYPE udt_base As Table
(
    base_id int,
    base_temp_id int,  -- NOTE: when populating the table valued parameters, this column holds the id used to connect the base and related tables.

    base_data int  
);

CREATE TYPE udt_related As Table
(
    related_base_id int,
    related_data int
);

CREATE TYPE udt_idMap as table
(
    temp_id int,
    id int
)
GO

Създайте съхранената процедура:
Сега, когато имаме типовете, дефинирани от потребителя, можем да създадем съхранената процедура, за да ги използваме.

CREATE PROCEDURE stp_InsertMultipleRecordsToMultipleTables
(
    @base as dbo.udt_base readonly,
    @related as dbo.udt_related readonly
)
AS

DECLARE @idMap as dbo.udt_idMap
MERGE INTO tblBase USING @base AS temp ON 1 = 0 -- Always not matched
WHEN NOT MATCHED THEN
    INSERT (base_data)
    VALUES (temp.base_data)
    OUTPUT temp.base_temp_id, inserted.base_id -- Here we use the base_temp_id to map to the correct id
    INTO @idMap (temp_id, id);

INSERT INTO tblRelated(related_base_id, related_data)
SELECT id, related_data
FROM @related r
INNER JOIN @idMap m ON(r.related_base_id = m.temp_id) -- here we use the map to insert the related records with the correct base ids


GO

Тестване:
Тестван върху 10 записа в основната таблица и 1000 записа в свързаната таблица, изпълнени за по-малко от 1 секунда.
Ето скрипта за теста:

-- declare and populate table parameters to send to the procedure
DECLARE @base as dbo.udt_base,
        @related as dbo.udt_related

INSERT INTO @base (base_temp_id, base_data) VALUES 
(10, 10), (20, 20), (30, 30), (40, 40), (50, 50), (60, 60), (70, 70), (80, 80), (90, 90), (100, 100)

INSERT INTO @related(related_base_id, related_data) VALUES 
(10, 100), (10, 101), (10, 102), (10, 103), (10, 104), (10, 105), (10, 106), (10, 107), (10, 108), (10, 109), 
(10, 110), (10, 111), (10, 112), (10, 113), (10, 114), (10, 115), (10, 116), (10, 117), (10, 118), (10, 119), 
(10, 120), (10, 121), (10, 122), (10, 123), (10, 124), (10, 125), (10, 126), (10, 127), (10, 128), (10, 129), 
(10, 130), (10, 131), (10, 132), (10, 133), (10, 134), (10, 135), (10, 136), (10, 137), (10, 138), (10, 139), 
(10, 140), (10, 141), (10, 142), (10, 143), (10, 144), (10, 145), (10, 146), (10, 147), (10, 148), (10, 149), 
(10, 150), (10, 151), (10, 152), (10, 153), (10, 154), (10, 155), (10, 156), (10, 157), (10, 158), (10, 159), 
(10, 160), (10, 161), (10, 162), (10, 163), (10, 164), (10, 165), (10, 166), (10, 167), (10, 168), (10, 169), 
(10, 170), (10, 171), (10, 172), (10, 173), (10, 174), (10, 175), (10, 176), (10, 177), (10, 178), (10, 179), 
(10, 180), (10, 181), (10, 182), (10, 183), (10, 184), (10, 185), (10, 186), (10, 187), (10, 188), (10, 189), 
(10, 190), (10, 191), (10, 192), (10, 193), (10, 194), (10, 195), (10, 196), (10, 197), (10, 198), (10, 199), 
(20, 200), (20, 201), (20, 202), (20, 203), (20, 204), (20, 205), (20, 206), (20, 207), (20, 208), (20, 209), 
(20, 210), (20, 211), (20, 212), (20, 213), (20, 214), (20, 215), (20, 216), (20, 217), (20, 218), (20, 219), 
(20, 220), (20, 221), (20, 222), (20, 223), (20, 224), (20, 225), (20, 226), (20, 227), (20, 228), (20, 229), 
(20, 230), (20, 231), (20, 232), (20, 233), (20, 234), (20, 235), (20, 236), (20, 237), (20, 238), (20, 239), 
(20, 240), (20, 241), (20, 242), (20, 243), (20, 244), (20, 245), (20, 246), (20, 247), (20, 248), (20, 249), 
(20, 250), (20, 251), (20, 252), (20, 253), (20, 254), (20, 255), (20, 256), (20, 257), (20, 258), (20, 259), 
(20, 260), (20, 261), (20, 262), (20, 263), (20, 264), (20, 265), (20, 266), (20, 267), (20, 268), (20, 269), 
(20, 270), (20, 271), (20, 272), (20, 273), (20, 274), (20, 275), (20, 276), (20, 277), (20, 278), (20, 279), 
(20, 280), (20, 281), (20, 282), (20, 283), (20, 284), (20, 285), (20, 286), (20, 287), (20, 288), (20, 289), 
(20, 290), (20, 291), (20, 292), (20, 293), (20, 294), (20, 295), (20, 296), (20, 297), (20, 298), (20, 299), 
(30, 300), (30, 301), (30, 302), (30, 303), (30, 304), (30, 305), (30, 306), (30, 307), (30, 308), (30, 309), 
(30, 310), (30, 311), (30, 312), (30, 313), (30, 314), (30, 315), (30, 316), (30, 317), (30, 318), (30, 319), 
(30, 320), (30, 321), (30, 322), (30, 323), (30, 324), (30, 325), (30, 326), (30, 327), (30, 328), (30, 329), 
(30, 330), (30, 331), (30, 332), (30, 333), (30, 334), (30, 335), (30, 336), (30, 337), (30, 338), (30, 339), 
(30, 340), (30, 341), (30, 342), (30, 343), (30, 344), (30, 345), (30, 346), (30, 347), (30, 348), (30, 349), 
(30, 350), (30, 351), (30, 352), (30, 353), (30, 354), (30, 355), (30, 356), (30, 357), (30, 358), (30, 359), 
(30, 360), (30, 361), (30, 362), (30, 363), (30, 364), (30, 365), (30, 366), (30, 367), (30, 368), (30, 369), 
(30, 370), (30, 371), (30, 372), (30, 373), (30, 374), (30, 375), (30, 376), (30, 377), (30, 378), (30, 379), 
(30, 380), (30, 381), (30, 382), (30, 383), (30, 384), (30, 385), (30, 386), (30, 387), (30, 388), (30, 389), 
(30, 390), (30, 391), (30, 392), (30, 393), (30, 394), (30, 395), (30, 396), (30, 397), (30, 398), (30, 399), 
(40, 400), (40, 401), (40, 402), (40, 403), (40, 404), (40, 405), (40, 406), (40, 407), (40, 408), (40, 409), 
(40, 410), (40, 411), (40, 412), (40, 413), (40, 414), (40, 415), (40, 416), (40, 417), (40, 418), (40, 419), 
(40, 420), (40, 421), (40, 422), (40, 423), (40, 424), (40, 425), (40, 426), (40, 427), (40, 428), (40, 429), 
(40, 430), (40, 431), (40, 432), (40, 433), (40, 434), (40, 435), (40, 436), (40, 437), (40, 438), (40, 439), 
(40, 440), (40, 441), (40, 442), (40, 443), (40, 444), (40, 445), (40, 446), (40, 447), (40, 448), (40, 449), 
(40, 450), (40, 451), (40, 452), (40, 453), (40, 454), (40, 455), (40, 456), (40, 457), (40, 458), (40, 459), 
(40, 460), (40, 461), (40, 462), (40, 463), (40, 464), (40, 465), (40, 466), (40, 467), (40, 468), (40, 469), 
(40, 470), (40, 471), (40, 472), (40, 473), (40, 474), (40, 475), (40, 476), (40, 477), (40, 478), (40, 479), 
(40, 480), (40, 481), (40, 482), (40, 483), (40, 484), (40, 485), (40, 486), (40, 487), (40, 488), (40, 489), 
(40, 490), (40, 491), (40, 492), (40, 493), (40, 494), (40, 495), (40, 496), (40, 497), (40, 498), (40, 499), 
(50, 500), (50, 501), (50, 502), (50, 503), (50, 504), (50, 505), (50, 506), (50, 507), (50, 508), (50, 509), 
(50, 510), (50, 511), (50, 512), (50, 513), (50, 514), (50, 515), (50, 516), (50, 517), (50, 518), (50, 519), 
(50, 520), (50, 521), (50, 522), (50, 523), (50, 524), (50, 525), (50, 526), (50, 527), (50, 528), (50, 529), 
(50, 530), (50, 531), (50, 532), (50, 533), (50, 534), (50, 535), (50, 536), (50, 537), (50, 538), (50, 539), 
(50, 540), (50, 541), (50, 542), (50, 543), (50, 544), (50, 545), (50, 546), (50, 547), (50, 548), (50, 549), 
(50, 550), (50, 551), (50, 552), (50, 553), (50, 554), (50, 555), (50, 556), (50, 557), (50, 558), (50, 559), 
(50, 560), (50, 561), (50, 562), (50, 563), (50, 564), (50, 565), (50, 566), (50, 567), (50, 568), (50, 569), 
(50, 570), (50, 571), (50, 572), (50, 573), (50, 574), (50, 575), (50, 576), (50, 577), (50, 578), (50, 579), 
(50, 580), (50, 581), (50, 582), (50, 583), (50, 584), (50, 585), (50, 586), (50, 587), (50, 588), (50, 589), 
(50, 590), (50, 591), (50, 592), (50, 593), (50, 594), (50, 595), (50, 596), (50, 597), (50, 598), (50, 599), 
(60, 600), (60, 601), (60, 602), (60, 603), (60, 604), (60, 605), (60, 606), (60, 607), (60, 608), (60, 609), 
(60, 610), (60, 611), (60, 612), (60, 613), (60, 614), (60, 615), (60, 616), (60, 617), (60, 618), (60, 619), 
(60, 620), (60, 621), (60, 622), (60, 623), (60, 624), (60, 625), (60, 626), (60, 627), (60, 628), (60, 629), 
(60, 630), (60, 631), (60, 632), (60, 633), (60, 634), (60, 635), (60, 636), (60, 637), (60, 638), (60, 639), 
(60, 640), (60, 641), (60, 642), (60, 643), (60, 644), (60, 645), (60, 646), (60, 647), (60, 648), (60, 649), 
(60, 650), (60, 651), (60, 652), (60, 653), (60, 654), (60, 655), (60, 656), (60, 657), (60, 658), (60, 659), 
(60, 660), (60, 661), (60, 662), (60, 663), (60, 664), (60, 665), (60, 666), (60, 667), (60, 668), (60, 669), 
(60, 670), (60, 671), (60, 672), (60, 673), (60, 674), (60, 675), (60, 676), (60, 677), (60, 678), (60, 679), 
(60, 680), (60, 681), (60, 682), (60, 683), (60, 684), (60, 685), (60, 686), (60, 687), (60, 688), (60, 689), 
(60, 690), (60, 691), (60, 692), (60, 693), (60, 694), (60, 695), (60, 696), (60, 697), (60, 698), (60, 699), 
(70, 700), (70, 701), (70, 702), (70, 703), (70, 704), (70, 705), (70, 706), (70, 707), (70, 708), (70, 709), 
(70, 710), (70, 711), (70, 712), (70, 713), (70, 714), (70, 715), (70, 716), (70, 717), (70, 718), (70, 719), 
(70, 720), (70, 721), (70, 722), (70, 723), (70, 724), (70, 725), (70, 726), (70, 727), (70, 728), (70, 729), 
(70, 730), (70, 731), (70, 732), (70, 733), (70, 734), (70, 735), (70, 736), (70, 737), (70, 738), (70, 739), 
(70, 740), (70, 741), (70, 742), (70, 743), (70, 744), (70, 745), (70, 746), (70, 747), (70, 748), (70, 749), 
(70, 750), (70, 751), (70, 752), (70, 753), (70, 754), (70, 755), (70, 756), (70, 757), (70, 758), (70, 759), 
(70, 760), (70, 761), (70, 762), (70, 763), (70, 764), (70, 765), (70, 766), (70, 767), (70, 768), (70, 769), 
(70, 770), (70, 771), (70, 772), (70, 773), (70, 774), (70, 775), (70, 776), (70, 777), (70, 778), (70, 779), 
(70, 780), (70, 781), (70, 782), (70, 783), (70, 784), (70, 785), (70, 786), (70, 787), (70, 788), (70, 789), 
(70, 790), (70, 791), (70, 792), (70, 793), (70, 794), (70, 795), (70, 796), (70, 797), (70, 798), (70, 799), 
(80, 800), (80, 801), (80, 802), (80, 803), (80, 804), (80, 805), (80, 806), (80, 807), (80, 808), (80, 809), 
(80, 810), (80, 811), (80, 812), (80, 813), (80, 814), (80, 815), (80, 816), (80, 817), (80, 818), (80, 819), 
(80, 820), (80, 821), (80, 822), (80, 823), (80, 824), (80, 825), (80, 826), (80, 827), (80, 828), (80, 829), 
(80, 830), (80, 831), (80, 832), (80, 833), (80, 834), (80, 835), (80, 836), (80, 837), (80, 838), (80, 839), 
(80, 840), (80, 841), (80, 842), (80, 843), (80, 844), (80, 845), (80, 846), (80, 847), (80, 848), (80, 849), 
(80, 850), (80, 851), (80, 852), (80, 853), (80, 854), (80, 855), (80, 856), (80, 857), (80, 858), (80, 859), 
(80, 860), (80, 861), (80, 862), (80, 863), (80, 864), (80, 865), (80, 866), (80, 867), (80, 868), (80, 869), 
(80, 870), (80, 871), (80, 872), (80, 873), (80, 874), (80, 875), (80, 876), (80, 877), (80, 878), (80, 879), 
(80, 880), (80, 881), (80, 882), (80, 883), (80, 884), (80, 885), (80, 886), (80, 887), (80, 888), (80, 889), 
(80, 890), (80, 891), (80, 892), (80, 893), (80, 894), (80, 895), (80, 896), (80, 897), (80, 898), (80, 899), 
(90, 900), (90, 901), (90, 902), (90, 903), (90, 904), (90, 905), (90, 906), (90, 907), (90, 908), (90, 909), 
(90, 910), (90, 911), (90, 912), (90, 913), (90, 914), (90, 915), (90, 916), (90, 917), (90, 918), (90, 919), 
(90, 920), (90, 921), (90, 922), (90, 923), (90, 924), (90, 925), (90, 926), (90, 927), (90, 928), (90, 929), 
(90, 930), (90, 931), (90, 932), (90, 933), (90, 934), (90, 935), (90, 936), (90, 937), (90, 938), (90, 939), 
(90, 940), (90, 941), (90, 942), (90, 943), (90, 944), (90, 945), (90, 946), (90, 947), (90, 948), (90, 949), 
(90, 950), (90, 951), (90, 952), (90, 953), (90, 954), (90, 955), (90, 956), (90, 957), (90, 958), (90, 959), 
(90, 960), (90, 961), (90, 962), (90, 963), (90, 964), (90, 965), (90, 966), (90, 967), (90, 968), (90, 969), 
(90, 970), (90, 971), (90, 972), (90, 973), (90, 974), (90, 975), (90, 976), (90, 977), (90, 978), (90, 979), 
(90, 980), (90, 981), (90, 982), (90, 983), (90, 984), (90, 985), (90, 986), (90, 987), (90, 988), (90, 989), 
(90, 990), (90, 991), (90, 992), (90, 993), (90, 994), (90, 995), (90, 996), (90, 997), (90, 998), (90, 999), 
(100, 1000), (100, 1001), (100, 1002), (100, 1003), (100, 1004), (100, 1005), (100, 1006), (100, 1007), (100, 1008), (100, 1009), 
(100, 1010), (100, 1011), (100, 1012), (100, 1013), (100, 1014), (100, 1015), (100, 1016), (100, 1017), (100, 1018), (100, 1019), 
(100, 1020), (100, 1021), (100, 1022), (100, 1023), (100, 1024), (100, 1025), (100, 1026), (100, 1027), (100, 1028), (100, 1029), 
(100, 1030), (100, 1031), (100, 1032), (100, 1033), (100, 1034), (100, 1035), (100, 1036), (100, 1037), (100, 1038), (100, 1039), 
(100, 1040), (100, 1041), (100, 1042), (100, 1043), (100, 1044), (100, 1045), (100, 1046), (100, 1047), (100, 1048), (100, 1049), 
(100, 1050), (100, 1051), (100, 1052), (100, 1053), (100, 1054), (100, 1055), (100, 1056), (100, 1057), (100, 1058), (100, 1059), 
(100, 1060), (100, 1061), (100, 1062), (100, 1063), (100, 1064), (100, 1065), (100, 1066), (100, 1067), (100, 1068), (100, 1069), 
(100, 1070), (100, 1071), (100, 1072), (100, 1073), (100, 1074), (100, 1075), (100, 1076), (100, 1077), (100, 1078), (100, 1079), 
(100, 1080), (100, 1081), (100, 1082), (100, 1083), (100, 1084), (100, 1085), (100, 1086), (100, 1087), (100, 1088), (100, 1089), 
(100, 1090), (100, 1091), (100, 1092), (100, 1093), (100, 1094), (100, 1095), (100, 1096), (100, 1097), (100, 1098), (100, 1099)

-- execute the stored procedure
EXEC stp_InsertMultipleRecordsToMultipleTables @base, @related

-- test that the values are correct
SELECT *
FROM tblBase 
INNER JOIN tblRelated ON(base_id = related_base_id)

Почистване:

DROP TABLE tblRelated;
DROP TABLE tblBase;
DROP PROCEDURE stp_InsertMultipleRecordsToMultipleTables;
DROP TYPE udt_base;
DROP TYPE udt_related;
DROP TYPE udt_idMap;
GO

Странична бележка:
Този отговор е вдъхновение за публикация в блога, озаглавена Вмъкване на няколко родители с множество деца в една съхранена процедура в моя блог.
Той има малко по-различна версия на кода, но идеята е същата .