Il modo più veloce per eseguire inserimenti in blocco nidificati con l'utilizzo di scope

Ho già scritto qualcosa del genere in precedenza, ma alla fine non ho avuto la possibilità di testarne le prestazioni.
Per inserire i dati in due tabelle correlate ho utilizzato una singola stored procedure e alcuni trucchi T-SQL come parametri con valori di tabella, unione e clausola di output.
Ecco uno script di esempio:

Innanzitutto, crea le tabelle di esempio:tblBase e tblRelated sono collegati con una chiave esterna uno a molti.

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
);

Ora che abbiamo tabelle di esempio, possiamo iniziare a creare la procedura memorizzata per l'inserimento.

Crea tipi di tabelle definiti dall'utente:
Per questa procedura memorizzata, è necessario utilizzare tre tipi di tabella definiti dall'utente:
Uno per la tabella di base,
uno per la tabella correlata,
e uno per mappare l'id temporaneo all'ID assegnato dal database.

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

Crea la procedura memorizzata:
Ora che abbiamo i tipi definiti dall'utente, possiamo creare la procedura memorizzata per usarli.

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

Test:
Testato su 10 record nella tabella di base e 1000 record nella tabella correlata, eseguiti in meno di 1 secondo.
Ecco lo script per il test:

-- 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)

Pulisci:

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

Nota a margine:
Questa risposta è l'ispirazione per un post sul blog intitolato Inserisci più genitori con più figli in un'unica procedura memorizzata sul mio blog.
Ha una versione leggermente diversa del codice, ma l'idea è la stessa .

Il modo più veloce per eseguire inserimenti in blocco nidificati con l'utilizzo di scope_identity()?