-
-
Notifications
You must be signed in to change notification settings - Fork 4.2k
/
query-generator.js
1054 lines (906 loc) · 35.2 KB
/
query-generator.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
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
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
'use strict';
const _ = require('lodash');
const Utils = require('../../utils');
const DataTypes = require('../../data-types');
const TableHints = require('../../table-hints');
const AbstractQueryGenerator = require('../abstract/query-generator');
const randomBytes = require('crypto').randomBytes;
const semver = require('semver');
const Op = require('../../operators');
/* istanbul ignore next */
const throwMethodUndefined = function(methodName) {
throw new Error(`The method "${methodName}" is not defined! Please add it to your sql dialect.`);
};
class MSSQLQueryGenerator extends AbstractQueryGenerator {
createDatabaseQuery(databaseName, options) {
options = { collate: null, ...options };
const collation = options.collate ? `COLLATE ${this.escape(options.collate)}` : '';
return [
'IF NOT EXISTS (SELECT * FROM sys.databases WHERE name =', wrapSingleQuote(databaseName), ')',
'BEGIN',
'CREATE DATABASE', this.quoteIdentifier(databaseName),
`${collation};`,
'END;'
].join(' ');
}
dropDatabaseQuery(databaseName) {
return [
'IF EXISTS (SELECT * FROM sys.databases WHERE name =', wrapSingleQuote(databaseName), ')',
'BEGIN',
'DROP DATABASE', this.quoteIdentifier(databaseName), ';',
'END;'
].join(' ');
}
createSchema(schema) {
return [
'IF NOT EXISTS (SELECT schema_name',
'FROM information_schema.schemata',
'WHERE schema_name =', wrapSingleQuote(schema), ')',
'BEGIN',
"EXEC sp_executesql N'CREATE SCHEMA",
this.quoteIdentifier(schema),
";'",
'END;'
].join(' ');
}
dropSchema(schema) {
// Mimics Postgres CASCADE, will drop objects belonging to the schema
const quotedSchema = wrapSingleQuote(schema);
return [
'IF EXISTS (SELECT schema_name',
'FROM information_schema.schemata',
'WHERE schema_name =', quotedSchema, ')',
'BEGIN',
'DECLARE @id INT, @ms_sql NVARCHAR(2000);',
'DECLARE @cascade TABLE (',
'id INT NOT NULL IDENTITY PRIMARY KEY,',
'ms_sql NVARCHAR(2000) NOT NULL );',
'INSERT INTO @cascade ( ms_sql )',
"SELECT CASE WHEN o.type IN ('F','PK')",
"THEN N'ALTER TABLE ['+ s.name + N'].[' + p.name + N'] DROP CONSTRAINT [' + o.name + N']'",
"ELSE N'DROP TABLE ['+ s.name + N'].[' + o.name + N']' END",
'FROM sys.objects o',
'JOIN sys.schemas s on o.schema_id = s.schema_id',
'LEFT OUTER JOIN sys.objects p on o.parent_object_id = p.object_id',
"WHERE o.type IN ('F', 'PK', 'U') AND s.name = ", quotedSchema,
'ORDER BY o.type ASC;',
'SELECT TOP 1 @id = id, @ms_sql = ms_sql FROM @cascade ORDER BY id;',
'WHILE @id IS NOT NULL',
'BEGIN',
'BEGIN TRY EXEC sp_executesql @ms_sql; END TRY',
'BEGIN CATCH BREAK; THROW; END CATCH;',
'DELETE FROM @cascade WHERE id = @id;',
'SELECT @id = NULL, @ms_sql = NULL;',
'SELECT TOP 1 @id = id, @ms_sql = ms_sql FROM @cascade ORDER BY id;',
'END',
"EXEC sp_executesql N'DROP SCHEMA", this.quoteIdentifier(schema), ";'",
'END;'
].join(' ');
}
showSchemasQuery() {
return [
'SELECT "name" as "schema_name" FROM sys.schemas as s',
'WHERE "s"."name" NOT IN (',
"'INFORMATION_SCHEMA', 'dbo', 'guest', 'sys', 'archive'",
')', 'AND', '"s"."name" NOT LIKE', "'db_%'"
].join(' ');
}
versionQuery() {
// Uses string manipulation to convert the MS Maj.Min.Patch.Build to semver Maj.Min.Patch
return [
'DECLARE @ms_ver NVARCHAR(20);',
"SET @ms_ver = REVERSE(CONVERT(NVARCHAR(20), SERVERPROPERTY('ProductVersion')));",
"SELECT REVERSE(SUBSTRING(@ms_ver, CHARINDEX('.', @ms_ver)+1, 20)) AS 'version'"
].join(' ');
}
createTableQuery(tableName, attributes, options) {
const primaryKeys = [],
foreignKeys = {},
attributesClauseParts = [];
let commentStr = '';
for (const attr in attributes) {
if (Object.prototype.hasOwnProperty.call(attributes, attr)) {
let dataType = attributes[attr];
let match;
if (dataType.includes('COMMENT ')) {
const commentMatch = dataType.match(/^(.+) (COMMENT.*)$/);
const commentText = commentMatch[2].replace('COMMENT', '').trim();
commentStr += this.commentTemplate(commentText, tableName, attr);
// remove comment related substring from dataType
dataType = commentMatch[1];
}
if (dataType.includes('PRIMARY KEY')) {
primaryKeys.push(attr);
if (dataType.includes('REFERENCES')) {
// MSSQL doesn't support inline REFERENCES declarations: move to the end
match = dataType.match(/^(.+) (REFERENCES.*)$/);
attributesClauseParts.push(`${this.quoteIdentifier(attr)} ${match[1].replace('PRIMARY KEY', '')}`);
foreignKeys[attr] = match[2];
} else {
attributesClauseParts.push(`${this.quoteIdentifier(attr)} ${dataType.replace('PRIMARY KEY', '')}`);
}
} else if (dataType.includes('REFERENCES')) {
// MSSQL doesn't support inline REFERENCES declarations: move to the end
match = dataType.match(/^(.+) (REFERENCES.*)$/);
attributesClauseParts.push(`${this.quoteIdentifier(attr)} ${match[1]}`);
foreignKeys[attr] = match[2];
} else {
attributesClauseParts.push(`${this.quoteIdentifier(attr)} ${dataType}`);
}
}
}
const pkString = primaryKeys.map(pk => this.quoteIdentifier(pk)).join(', ');
if (options.uniqueKeys) {
_.each(options.uniqueKeys, (columns, indexName) => {
if (columns.customIndex) {
if (typeof indexName !== 'string') {
indexName = `uniq_${tableName}_${columns.fields.join('_')}`;
}
attributesClauseParts.push(`CONSTRAINT ${
this.quoteIdentifier(indexName)
} UNIQUE (${
columns.fields.map(field => this.quoteIdentifier(field)).join(', ')
})`);
}
});
}
if (pkString.length > 0) {
attributesClauseParts.push(`PRIMARY KEY (${pkString})`);
}
for (const fkey in foreignKeys) {
if (Object.prototype.hasOwnProperty.call(foreignKeys, fkey)) {
attributesClauseParts.push(`FOREIGN KEY (${this.quoteIdentifier(fkey)}) ${foreignKeys[fkey]}`);
}
}
const quotedTableName = this.quoteTable(tableName);
return Utils.joinSQLFragments([
`IF OBJECT_ID('${quotedTableName}', 'U') IS NULL`,
`CREATE TABLE ${quotedTableName} (${attributesClauseParts.join(', ')})`,
';',
commentStr
]);
}
describeTableQuery(tableName, schema) {
let sql = [
'SELECT',
"c.COLUMN_NAME AS 'Name',",
"c.DATA_TYPE AS 'Type',",
"c.CHARACTER_MAXIMUM_LENGTH AS 'Length',",
"c.IS_NULLABLE as 'IsNull',",
"COLUMN_DEFAULT AS 'Default',",
"pk.CONSTRAINT_TYPE AS 'Constraint',",
"COLUMNPROPERTY(OBJECT_ID(c.TABLE_SCHEMA+'.'+c.TABLE_NAME), c.COLUMN_NAME, 'IsIdentity') as 'IsIdentity',",
"CAST(prop.value AS NVARCHAR) AS 'Comment'",
'FROM',
'INFORMATION_SCHEMA.TABLES t',
'INNER JOIN',
'INFORMATION_SCHEMA.COLUMNS c ON t.TABLE_NAME = c.TABLE_NAME AND t.TABLE_SCHEMA = c.TABLE_SCHEMA',
'LEFT JOIN (SELECT tc.table_schema, tc.table_name, ',
'cu.column_name, tc.CONSTRAINT_TYPE ',
'FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS tc ',
'JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE cu ',
'ON tc.table_schema=cu.table_schema and tc.table_name=cu.table_name ',
'and tc.constraint_name=cu.constraint_name ',
'and tc.CONSTRAINT_TYPE=\'PRIMARY KEY\') pk ',
'ON pk.table_schema=c.table_schema ',
'AND pk.table_name=c.table_name ',
'AND pk.column_name=c.column_name ',
'INNER JOIN sys.columns AS sc',
"ON sc.object_id = object_id(t.table_schema + '.' + t.table_name) AND sc.name = c.column_name",
'LEFT JOIN sys.extended_properties prop ON prop.major_id = sc.object_id',
'AND prop.minor_id = sc.column_id',
"AND prop.name = 'MS_Description'",
'WHERE t.TABLE_NAME =', wrapSingleQuote(tableName)
].join(' ');
if (schema) {
sql += `AND t.TABLE_SCHEMA =${wrapSingleQuote(schema)}`;
}
return sql;
}
renameTableQuery(before, after) {
return `EXEC sp_rename ${this.quoteTable(before)}, ${this.quoteTable(after)};`;
}
showTablesQuery() {
return "SELECT TABLE_NAME, TABLE_SCHEMA FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'BASE TABLE';";
}
tableExistsQuery(table) {
const tableName = table.tableName || table;
const schemaName = table.schema || 'dbo';
return `SELECT TABLE_NAME, TABLE_SCHEMA FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'BASE TABLE' AND TABLE_NAME = ${this.escape(tableName)} AND TABLE_SCHEMA = ${this.escape(schemaName)}`;
}
dropTableQuery(tableName) {
const quoteTbl = this.quoteTable(tableName);
return Utils.joinSQLFragments([
`IF OBJECT_ID('${quoteTbl}', 'U') IS NOT NULL`,
'DROP TABLE',
quoteTbl,
';'
]);
}
addColumnQuery(table, key, dataType) {
// FIXME: attributeToSQL SHOULD be using attributes in addColumnQuery
// but instead we need to pass the key along as the field here
dataType.field = key;
let commentStr = '';
if (dataType.comment && _.isString(dataType.comment)) {
commentStr = this.commentTemplate(dataType.comment, table, key);
// attributeToSQL will try to include `COMMENT 'Comment Text'` when it returns if the comment key
// is present. This is needed for createTable statement where that part is extracted with regex.
// Here we can intercept the object and remove comment property since we have the original object.
delete dataType['comment'];
}
return Utils.joinSQLFragments([
'ALTER TABLE',
this.quoteTable(table),
'ADD',
this.quoteIdentifier(key),
this.attributeToSQL(dataType, { context: 'addColumn' }),
';',
commentStr
]);
}
commentTemplate(comment, table, column) {
return ' EXEC sp_addextendedproperty ' +
`@name = N'MS_Description', @value = ${this.escape(comment)}, ` +
'@level0type = N\'Schema\', @level0name = \'dbo\', ' +
`@level1type = N'Table', @level1name = ${this.quoteIdentifier(table)}, ` +
`@level2type = N'Column', @level2name = ${this.quoteIdentifier(column)};`;
}
removeColumnQuery(tableName, attributeName) {
return Utils.joinSQLFragments([
'ALTER TABLE',
this.quoteTable(tableName),
'DROP COLUMN',
this.quoteIdentifier(attributeName),
';'
]);
}
changeColumnQuery(tableName, attributes) {
const attrString = [],
constraintString = [];
let commentString = '';
for (const attributeName in attributes) {
const quotedAttrName = this.quoteIdentifier(attributeName);
let definition = attributes[attributeName];
if (definition.includes('COMMENT ')) {
const commentMatch = definition.match(/^(.+) (COMMENT.*)$/);
const commentText = commentMatch[2].replace('COMMENT', '').trim();
commentString += this.commentTemplate(commentText, tableName, attributeName);
// remove comment related substring from dataType
definition = commentMatch[1];
}
if (definition.includes('REFERENCES')) {
constraintString.push(`FOREIGN KEY (${quotedAttrName}) ${definition.replace(/.+?(?=REFERENCES)/, '')}`);
} else {
attrString.push(`${quotedAttrName} ${definition}`);
}
}
return Utils.joinSQLFragments([
'ALTER TABLE',
this.quoteTable(tableName),
attrString.length && `ALTER COLUMN ${attrString.join(', ')}`,
constraintString.length && `ADD ${constraintString.join(', ')}`,
';',
commentString
]);
}
renameColumnQuery(tableName, attrBefore, attributes) {
const newName = Object.keys(attributes)[0];
return Utils.joinSQLFragments([
'EXEC sp_rename',
`'${this.quoteTable(tableName)}.${attrBefore}',`,
`'${newName}',`,
"'COLUMN'",
';'
]);
}
bulkInsertQuery(tableName, attrValueHashes, options, attributes) {
const quotedTable = this.quoteTable(tableName);
options = options || {};
attributes = attributes || {};
const tuples = [];
const allAttributes = [];
const allQueries = [];
let needIdentityInsertWrapper = false,
outputFragment = '';
if (options.returning) {
const returnValues = this.generateReturnValues(attributes, options);
outputFragment = returnValues.outputFragment;
}
const emptyQuery = `INSERT INTO ${quotedTable}${outputFragment} DEFAULT VALUES`;
attrValueHashes.forEach(attrValueHash => {
// special case for empty objects with primary keys
const fields = Object.keys(attrValueHash);
const firstAttr = attributes[fields[0]];
if (fields.length === 1 && firstAttr && firstAttr.autoIncrement && attrValueHash[fields[0]] === null) {
allQueries.push(emptyQuery);
return;
}
// normal case
_.forOwn(attrValueHash, (value, key) => {
if (value !== null && attributes[key] && attributes[key].autoIncrement) {
needIdentityInsertWrapper = true;
}
if (!allAttributes.includes(key)) {
if (value === null && attributes[key] && attributes[key].autoIncrement)
return;
allAttributes.push(key);
}
});
});
if (allAttributes.length > 0) {
attrValueHashes.forEach(attrValueHash => {
tuples.push(`(${
allAttributes.map(key =>
this.escape(attrValueHash[key])).join(',')
})`);
});
const quotedAttributes = allAttributes.map(attr => this.quoteIdentifier(attr)).join(',');
allQueries.push(tupleStr => `INSERT INTO ${quotedTable} (${quotedAttributes})${outputFragment} VALUES ${tupleStr};`);
}
const commands = [];
let offset = 0;
const batch = Math.floor(250 / (allAttributes.length + 1)) + 1;
while (offset < Math.max(tuples.length, 1)) {
const tupleStr = tuples.slice(offset, Math.min(tuples.length, offset + batch));
let generatedQuery = allQueries.map(v => typeof v === 'string' ? v : v(tupleStr)).join(';');
if (needIdentityInsertWrapper) {
generatedQuery = `SET IDENTITY_INSERT ${quotedTable} ON; ${generatedQuery}; SET IDENTITY_INSERT ${quotedTable} OFF;`;
}
commands.push(generatedQuery);
offset += batch;
}
return commands.join(';');
}
updateQuery(tableName, attrValueHash, where, options, attributes) {
const sql = super.updateQuery(tableName, attrValueHash, where, options, attributes);
if (options.limit) {
const updateArgs = `UPDATE TOP(${this.escape(options.limit)})`;
sql.query = sql.query.replace('UPDATE', updateArgs);
}
return sql;
}
upsertQuery(tableName, insertValues, updateValues, where, model) {
const targetTableAlias = this.quoteTable(`${tableName}_target`);
const sourceTableAlias = this.quoteTable(`${tableName}_source`);
const primaryKeysAttrs = [];
const identityAttrs = [];
const uniqueAttrs = [];
const tableNameQuoted = this.quoteTable(tableName);
let needIdentityInsertWrapper = false;
//Obtain primaryKeys, uniquekeys and identity attrs from rawAttributes as model is not passed
for (const key in model.rawAttributes) {
if (model.rawAttributes[key].primaryKey) {
primaryKeysAttrs.push(model.rawAttributes[key].field || key);
}
if (model.rawAttributes[key].unique) {
uniqueAttrs.push(model.rawAttributes[key].field || key);
}
if (model.rawAttributes[key].autoIncrement) {
identityAttrs.push(model.rawAttributes[key].field || key);
}
}
//Add unique indexes defined by indexes option to uniqueAttrs
for (const index of model._indexes) {
if (index.unique && index.fields) {
for (const field of index.fields) {
const fieldName = typeof field === 'string' ? field : field.name || field.attribute;
if (!uniqueAttrs.includes(fieldName) && model.rawAttributes[fieldName]) {
uniqueAttrs.push(fieldName);
}
}
}
}
const updateKeys = Object.keys(updateValues);
const insertKeys = Object.keys(insertValues);
const insertKeysQuoted = insertKeys.map(key => this.quoteIdentifier(key)).join(', ');
const insertValuesEscaped = insertKeys.map(key => this.escape(insertValues[key])).join(', ');
const sourceTableQuery = `VALUES(${insertValuesEscaped})`; //Virtual Table
let joinCondition;
//IDENTITY_INSERT Condition
identityAttrs.forEach(key => {
if (insertValues[key] && insertValues[key] !== null) {
needIdentityInsertWrapper = true;
/*
* IDENTITY_INSERT Column Cannot be updated, only inserted
* http://stackoverflow.com/a/30176254/2254360
*/
}
});
//Filter NULL Clauses
const clauses = where[Op.or].filter(clause => {
let valid = true;
/*
* Exclude NULL Composite PK/UK. Partial Composite clauses should also be excluded as it doesn't guarantee a single row
*/
for (const key in clause) {
if (typeof clause[key] === 'undefined' || clause[key] == null) {
valid = false;
break;
}
}
return valid;
});
/*
* Generate ON condition using PK(s).
* If not, generate using UK(s). Else throw error
*/
const getJoinSnippet = array => {
return array.map(key => {
key = this.quoteIdentifier(key);
return `${targetTableAlias}.${key} = ${sourceTableAlias}.${key}`;
});
};
if (clauses.length === 0) {
throw new Error('Primary Key or Unique key should be passed to upsert query');
} else {
// Search for primary key attribute in clauses -- Model can have two separate unique keys
for (const key in clauses) {
const keys = Object.keys(clauses[key]);
if (primaryKeysAttrs.includes(keys[0])) {
joinCondition = getJoinSnippet(primaryKeysAttrs).join(' AND ');
break;
}
}
if (!joinCondition) {
joinCondition = getJoinSnippet(uniqueAttrs).join(' AND ');
}
}
// Remove the IDENTITY_INSERT Column from update
const filteredUpdateClauses = updateKeys.filter(key => !identityAttrs.includes(key))
.map(key => {
const value = this.escape(updateValues[key]);
key = this.quoteIdentifier(key);
return `${targetTableAlias}.${key} = ${value}`;
});
const updateSnippet = filteredUpdateClauses.length > 0 ? `WHEN MATCHED THEN UPDATE SET ${filteredUpdateClauses.join(', ')}` : '';
const insertSnippet = `(${insertKeysQuoted}) VALUES(${insertValuesEscaped})`;
let query = `MERGE INTO ${tableNameQuoted} WITH(HOLDLOCK) AS ${targetTableAlias} USING (${sourceTableQuery}) AS ${sourceTableAlias}(${insertKeysQuoted}) ON ${joinCondition}`;
query += ` ${updateSnippet} WHEN NOT MATCHED THEN INSERT ${insertSnippet} OUTPUT $action, INSERTED.*;`;
if (needIdentityInsertWrapper) {
query = `SET IDENTITY_INSERT ${tableNameQuoted} ON; ${query} SET IDENTITY_INSERT ${tableNameQuoted} OFF;`;
}
return query;
}
truncateTableQuery(tableName) {
return `TRUNCATE TABLE ${this.quoteTable(tableName)}`;
}
deleteQuery(tableName, where, options = {}, model) {
const table = this.quoteTable(tableName);
const whereClause = this.getWhereConditions(where, null, model, options);
return Utils.joinSQLFragments([
'DELETE',
options.limit && `TOP(${this.escape(options.limit)})`,
'FROM',
table,
whereClause && `WHERE ${whereClause}`,
';',
'SELECT @@ROWCOUNT AS AFFECTEDROWS',
';'
]);
}
showIndexesQuery(tableName) {
return `EXEC sys.sp_helpindex @objname = N'${this.quoteTable(tableName)}';`;
}
showConstraintsQuery(tableName) {
return `EXEC sp_helpconstraint @objname = ${this.escape(this.quoteTable(tableName))};`;
}
removeIndexQuery(tableName, indexNameOrAttributes) {
let indexName = indexNameOrAttributes;
if (typeof indexName !== 'string') {
indexName = Utils.underscore(`${tableName}_${indexNameOrAttributes.join('_')}`);
}
return `DROP INDEX ${this.quoteIdentifiers(indexName)} ON ${this.quoteIdentifiers(tableName)}`;
}
attributeToSQL(attribute, options) {
if (!_.isPlainObject(attribute)) {
attribute = {
type: attribute
};
}
// handle self referential constraints
if (attribute.references) {
if (attribute.Model && attribute.Model.tableName === attribute.references.model) {
this.sequelize.log('MSSQL does not support self referencial constraints, '
+ 'we will remove it but we recommend restructuring your query');
attribute.onDelete = '';
attribute.onUpdate = '';
}
}
let template;
if (attribute.type instanceof DataTypes.ENUM) {
if (attribute.type.values && !attribute.values) attribute.values = attribute.type.values;
// enums are a special case
template = attribute.type.toSql();
template += ` CHECK (${this.quoteIdentifier(attribute.field)} IN(${attribute.values.map(value => {
return this.escape(value);
}).join(', ') }))`;
return template;
}
template = attribute.type.toString();
if (attribute.allowNull === false) {
template += ' NOT NULL';
} else if (!attribute.primaryKey && !Utils.defaultValueSchemable(attribute.defaultValue)) {
template += ' NULL';
}
if (attribute.autoIncrement) {
template += ' IDENTITY(1,1)';
}
// Blobs/texts cannot have a defaultValue
if (attribute.type !== 'TEXT' && attribute.type._binary !== true &&
Utils.defaultValueSchemable(attribute.defaultValue)) {
template += ` DEFAULT ${this.escape(attribute.defaultValue)}`;
}
if (attribute.unique === true) {
template += ' UNIQUE';
}
if (attribute.primaryKey) {
template += ' PRIMARY KEY';
}
if ((!options || !options.withoutForeignKeyConstraints) && attribute.references) {
template += ` REFERENCES ${this.quoteTable(attribute.references.model)}`;
if (attribute.references.key) {
template += ` (${this.quoteIdentifier(attribute.references.key)})`;
} else {
template += ` (${this.quoteIdentifier('id')})`;
}
if (attribute.onDelete) {
template += ` ON DELETE ${attribute.onDelete.toUpperCase()}`;
}
if (attribute.onUpdate) {
template += ` ON UPDATE ${attribute.onUpdate.toUpperCase()}`;
}
}
if (attribute.comment && typeof attribute.comment === 'string') {
template += ` COMMENT ${attribute.comment}`;
}
return template;
}
attributesToSQL(attributes, options) {
const result = {},
existingConstraints = [];
let key,
attribute;
for (key in attributes) {
attribute = attributes[key];
if (attribute.references) {
if (existingConstraints.includes(attribute.references.model.toString())) {
// no cascading constraints to a table more than once
attribute.onDelete = '';
attribute.onUpdate = '';
} else {
existingConstraints.push(attribute.references.model.toString());
// NOTE: this really just disables cascading updates for all
// definitions. Can be made more robust to support the
// few cases where MSSQL actually supports them
attribute.onUpdate = '';
}
}
if (key && !attribute.field) attribute.field = key;
result[attribute.field || key] = this.attributeToSQL(attribute, options);
}
return result;
}
createTrigger() {
throwMethodUndefined('createTrigger');
}
dropTrigger() {
throwMethodUndefined('dropTrigger');
}
renameTrigger() {
throwMethodUndefined('renameTrigger');
}
createFunction() {
throwMethodUndefined('createFunction');
}
dropFunction() {
throwMethodUndefined('dropFunction');
}
renameFunction() {
throwMethodUndefined('renameFunction');
}
/**
* Generate common SQL prefix for ForeignKeysQuery.
*
* @param {string} catalogName
* @returns {string}
*/
_getForeignKeysQueryPrefix(catalogName) {
return `${'SELECT ' +
'constraint_name = OBJ.NAME, ' +
'constraintName = OBJ.NAME, '}${
catalogName ? `constraintCatalog = '${catalogName}', ` : ''
}constraintSchema = SCHEMA_NAME(OBJ.SCHEMA_ID), ` +
'tableName = TB.NAME, ' +
`tableSchema = SCHEMA_NAME(TB.SCHEMA_ID), ${
catalogName ? `tableCatalog = '${catalogName}', ` : ''
}columnName = COL.NAME, ` +
`referencedTableSchema = SCHEMA_NAME(RTB.SCHEMA_ID), ${
catalogName ? `referencedCatalog = '${catalogName}', ` : ''
}referencedTableName = RTB.NAME, ` +
'referencedColumnName = RCOL.NAME ' +
'FROM sys.foreign_key_columns FKC ' +
'INNER JOIN sys.objects OBJ ON OBJ.OBJECT_ID = FKC.CONSTRAINT_OBJECT_ID ' +
'INNER JOIN sys.tables TB ON TB.OBJECT_ID = FKC.PARENT_OBJECT_ID ' +
'INNER JOIN sys.columns COL ON COL.COLUMN_ID = PARENT_COLUMN_ID AND COL.OBJECT_ID = TB.OBJECT_ID ' +
'INNER JOIN sys.tables RTB ON RTB.OBJECT_ID = FKC.REFERENCED_OBJECT_ID ' +
'INNER JOIN sys.columns RCOL ON RCOL.COLUMN_ID = REFERENCED_COLUMN_ID AND RCOL.OBJECT_ID = RTB.OBJECT_ID';
}
/**
* Generates an SQL query that returns all foreign keys details of a table.
*
* @param {string|object} table
* @param {string} catalogName database name
* @returns {string}
*/
getForeignKeysQuery(table, catalogName) {
const tableName = table.tableName || table;
let sql = `${this._getForeignKeysQueryPrefix(catalogName)
} WHERE TB.NAME =${wrapSingleQuote(tableName)}`;
if (table.schema) {
sql += ` AND SCHEMA_NAME(TB.SCHEMA_ID) =${wrapSingleQuote(table.schema)}`;
}
return sql;
}
getForeignKeyQuery(table, attributeName) {
const tableName = table.tableName || table;
return Utils.joinSQLFragments([
this._getForeignKeysQueryPrefix(),
'WHERE',
`TB.NAME =${wrapSingleQuote(tableName)}`,
'AND',
`COL.NAME =${wrapSingleQuote(attributeName)}`,
table.schema && `AND SCHEMA_NAME(TB.SCHEMA_ID) =${wrapSingleQuote(table.schema)}`
]);
}
getPrimaryKeyConstraintQuery(table, attributeName) {
const tableName = wrapSingleQuote(table.tableName || table);
return Utils.joinSQLFragments([
'SELECT K.TABLE_NAME AS tableName,',
'K.COLUMN_NAME AS columnName,',
'K.CONSTRAINT_NAME AS constraintName',
'FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS AS C',
'JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE AS K',
'ON C.TABLE_NAME = K.TABLE_NAME',
'AND C.CONSTRAINT_CATALOG = K.CONSTRAINT_CATALOG',
'AND C.CONSTRAINT_SCHEMA = K.CONSTRAINT_SCHEMA',
'AND C.CONSTRAINT_NAME = K.CONSTRAINT_NAME',
'WHERE C.CONSTRAINT_TYPE = \'PRIMARY KEY\'',
`AND K.COLUMN_NAME = ${wrapSingleQuote(attributeName)}`,
`AND K.TABLE_NAME = ${tableName}`,
';'
]);
}
dropForeignKeyQuery(tableName, foreignKey) {
return Utils.joinSQLFragments([
'ALTER TABLE',
this.quoteTable(tableName),
'DROP',
this.quoteIdentifier(foreignKey)
]);
}
getDefaultConstraintQuery(tableName, attributeName) {
const quotedTable = this.quoteTable(tableName);
return Utils.joinSQLFragments([
'SELECT name FROM sys.default_constraints',
`WHERE PARENT_OBJECT_ID = OBJECT_ID('${quotedTable}', 'U')`,
`AND PARENT_COLUMN_ID = (SELECT column_id FROM sys.columns WHERE NAME = ('${attributeName}')`,
`AND object_id = OBJECT_ID('${quotedTable}', 'U'))`,
';'
]);
}
dropConstraintQuery(tableName, constraintName) {
return Utils.joinSQLFragments([
'ALTER TABLE',
this.quoteTable(tableName),
'DROP CONSTRAINT',
this.quoteIdentifier(constraintName),
';'
]);
}
setIsolationLevelQuery() {
}
generateTransactionId() {
return randomBytes(10).toString('hex');
}
startTransactionQuery(transaction) {
if (transaction.parent) {
return `SAVE TRANSACTION ${this.quoteIdentifier(transaction.name)};`;
}
return 'BEGIN TRANSACTION;';
}
commitTransactionQuery(transaction) {
if (transaction.parent) {
return;
}
return 'COMMIT TRANSACTION;';
}
rollbackTransactionQuery(transaction) {
if (transaction.parent) {
return `ROLLBACK TRANSACTION ${this.quoteIdentifier(transaction.name)};`;
}
return 'ROLLBACK TRANSACTION;';
}
selectFromTableFragment(options, model, attributes, tables, mainTableAs, where) {
this._throwOnEmptyAttributes(attributes, { modelName: model && model.name, as: mainTableAs });
const dbVersion = this.sequelize.options.databaseVersion;
const isSQLServer2008 = semver.valid(dbVersion) && semver.lt(dbVersion, '11.0.0');
if (isSQLServer2008 && options.offset) {
// For earlier versions of SQL server, we need to nest several queries
// in order to emulate the OFFSET behavior.
//
// 1. The outermost query selects all items from the inner query block.
// This is due to a limitation in SQL server with the use of computed
// columns (e.g. SELECT ROW_NUMBER()...AS x) in WHERE clauses.
// 2. The next query handles the LIMIT and OFFSET behavior by getting
// the TOP N rows of the query where the row number is > OFFSET
// 3. The innermost query is the actual set we want information from
const offset = options.offset || 0;
const isSubQuery = options.hasIncludeWhere || options.hasIncludeRequired || options.hasMultiAssociation;
let orders = { mainQueryOrder: [] };
if (options.order) {
orders = this.getQueryOrders(options, model, isSubQuery);
}
if (orders.mainQueryOrder.length === 0) {
orders.mainQueryOrder.push(this.quoteIdentifier(model.primaryKeyField));
}
const tmpTable = mainTableAs || 'OffsetTable';
if (options.include) {
const subQuery = options.subQuery === undefined ? options.limit && options.hasMultiAssociation : options.subQuery;
const mainTable = {
name: mainTableAs,
quotedName: null,
as: null,
model
};
const topLevelInfo = {
names: mainTable,
options,
subQuery
};
let mainJoinQueries = [];
for (const include of options.include) {
if (include.separate) {
continue;
}
const joinQueries = this.generateInclude(include, { externalAs: mainTableAs, internalAs: mainTableAs }, topLevelInfo);
mainJoinQueries = mainJoinQueries.concat(joinQueries.mainQuery);
}
return Utils.joinSQLFragments([
'SELECT TOP 100 PERCENT',
attributes.join(', '),
'FROM (',
[
'SELECT',
options.limit && `TOP ${options.limit}`,
'* FROM (',
[
'SELECT ROW_NUMBER() OVER (',
[
'ORDER BY',
orders.mainQueryOrder.join(', ')
],
`) as row_num, ${tmpTable}.* FROM (`,
[
'SELECT DISTINCT',
`${tmpTable}.* FROM ${tables} AS ${tmpTable}`,
mainJoinQueries,
where && `WHERE ${where}`
],
`) AS ${tmpTable}`
],
`) AS ${tmpTable} WHERE row_num > ${offset}`
],
`) AS ${tmpTable}`
]);
}
return Utils.joinSQLFragments([
'SELECT TOP 100 PERCENT',
attributes.join(', '),
'FROM (',
[
'SELECT',
options.limit && `TOP ${options.limit}`,
'* FROM (',
[
'SELECT ROW_NUMBER() OVER (',
[
'ORDER BY',
orders.mainQueryOrder.join(', ')
],
`) as row_num, * FROM ${tables} AS ${tmpTable}`,
where && `WHERE ${where}`
],
`) AS ${tmpTable} WHERE row_num > ${offset}`
],
`) AS ${tmpTable}`
]);
}
return Utils.joinSQLFragments([
'SELECT',
isSQLServer2008 && options.limit && `TOP ${options.limit}`,
attributes.join(', '),
`FROM ${tables}`,
mainTableAs && `AS ${mainTableAs}`,
options.tableHint && TableHints[options.tableHint] && `WITH (${TableHints[options.tableHint]})`
]);
}
addLimitAndOffset(options, model) {
// Skip handling of limit and offset as postfixes for older SQL Server versions
if (semver.valid(this.sequelize.options.databaseVersion) && semver.lt(this.sequelize.options.databaseVersion, '11.0.0')) {
return '';
}
const offset = options.offset || 0;
const isSubQuery = options.subQuery === undefined
? options.hasIncludeWhere || options.hasIncludeRequired || options.hasMultiAssociation
: options.subQuery;
let fragment = '';
let orders = {};
if (options.order) {
orders = this.getQueryOrders(options, model, isSubQuery);
}
if (options.limit || options.offset) {
// TODO: document why this is adding the primary key of the model in ORDER BY
// if options.include is set
if (!options.order || options.order.length === 0 || options.include && orders.subQueryOrder.length === 0) {
let primaryKey = model.primaryKeyField;
const tablePkFragment = `${this.quoteTable(options.tableAs || model.name)}.${this.quoteIdentifier(primaryKey)}`;
const aliasedAttribute = (options.attributes || []).find(attr => Array.isArray(attr)
&& attr[1]
&& (attr[0] === primaryKey || attr[1] === primaryKey));
if (aliasedAttribute) {
const modelName = this.quoteIdentifier(options.tableAs || model.name);
const alias = this._getAliasForField(modelName, aliasedAttribute[1], options);
primaryKey = new Utils.Col(alias || aliasedAttribute[1]);
}
if (!options.order || !options.order.length) {
fragment += ` ORDER BY ${tablePkFragment}`;
} else {
const orderFieldNames = (options.order || []).map(order => {
const value = Array.isArray(order) ? order[0] : order;
if (value instanceof Utils.Col) {
return value.col;