1 /* 2 ** 2001 September 15 3 ** 4 ** The author disclaims copyright to this source code. In place of 5 ** a legal notice, here is a blessing: 6 ** 7 ** May you do good and not evil. 8 ** May you find forgiveness for yourself and forgive others. 9 ** May you share freely, never taking more than you give. 10 ** 11 ************************************************************************* 12 ** This file contains SQLite's grammar for SQL. Process this file 13 ** using the lemon parser generator to generate C code that runs 14 ** the parser. Lemon will also generate a header file containing 15 ** numeric codes for all of the tokens. 16 ** 17 ** @(#) $Id: parse.y,v 1.180 2005/09/16 02:38:10 drh Exp $ 18 */ 19 20 // All token codes are small integers with #defines that begin with "TK_" 21 %token_prefix TK_ 22 23 // The type of the data attached to each token is Token. This is also the 24 // default type for non-terminals. 25 // 26 %token_type {Token} 27 %default_type {Token} 28 29 // The generated parser function takes a 4th argument as follows: 30 %extra_argument {Parse *pParse} 31 32 // This code runs whenever there is a syntax error 33 // 34 %syntax_error { 35 if( pParse->zErrMsg==0 ){ 36 if( TOKEN.z[0] ){ 37 sqlite3ErrorMsg(pParse, "near \"%T\": syntax error", &TOKEN); 38 }else{ 39 sqlite3ErrorMsg(pParse, "incomplete SQL statement"); 40 } 41 } 42 } 43 44 // The name of the generated procedure that implements the parser 45 // is as follows: 46 %name sqlite3Parser 47 48 // The following text is included near the beginning of the C source 49 // code file that implements the parser. 50 // 51 %include { 52 #include "sqliteInt.h" 53 #include "parse.h" 54 55 /* 56 ** An instance of this structure holds information about the 57 ** LIMIT clause of a SELECT statement. 58 */ 59 struct LimitVal { 60 Expr *pLimit; /* The LIMIT expression. NULL if there is no limit */ 61 Expr *pOffset; /* The OFFSET expression. NULL if there is none */ 62 }; 63 64 /* 65 ** An instance of this structure is used to store the LIKE, 66 ** GLOB, NOT LIKE, and NOT GLOB operators. 67 */ 68 struct LikeOp { 69 Token operator; /* "like" or "glob" or "regexp" */ 70 int not; /* True if the NOT keyword is present */ 71 }; 72 73 /* 74 ** An instance of the following structure describes the event of a 75 ** TRIGGER. "a" is the event type, one of TK_UPDATE, TK_INSERT, 76 ** TK_DELETE, or TK_INSTEAD. If the event is of the form 77 ** 78 ** UPDATE ON (a,b,c) 79 ** 80 ** Then the "b" IdList records the list "a,b,c". 81 */ 82 struct TrigEvent { int a; IdList * b; }; 83 84 /* 85 ** An instance of this structure holds the ATTACH key and the key type. 86 */ 87 struct AttachKey { int type; Token key; }; 88 89 } // end %include 90 91 // These are extra tokens used by the lexer but never seen by the 92 // parser. We put them in a rule so that the parser generator will 93 // add them to the parse.h output file. 94 // 95 %nonassoc END_OF_FILE ILLEGAL SPACE UNCLOSED_STRING COMMENT FUNCTION 96 COLUMN AGG_FUNCTION AGG_COLUMN CONST_FUNC. 97 98 // Input is a single SQL command 99 input ::= cmdlist. 100 cmdlist ::= cmdlist ecmd. 101 cmdlist ::= ecmd. 102 cmdx ::= cmd. { sqlite3FinishCoding(pParse); } 103 ecmd ::= SEMI. 104 ecmd ::= explain cmdx SEMI. 105 explain ::= . { sqlite3BeginParse(pParse, 0); } 106 %ifndef SQLITE_OMIT_EXPLAIN 107 explain ::= EXPLAIN. { sqlite3BeginParse(pParse, 1); } 108 explain ::= EXPLAIN QUERY PLAN. { sqlite3BeginParse(pParse, 2); } 109 %endif 110 111 ///////////////////// Begin and end transactions. //////////////////////////// 112 // 113 114 cmd ::= BEGIN transtype(Y) trans_opt. {sqlite3BeginTransaction(pParse, Y);} 115 trans_opt ::= . 116 trans_opt ::= TRANSACTION. 117 trans_opt ::= TRANSACTION nm. 118 %type transtype {int} 119 transtype(A) ::= . {A = TK_DEFERRED;} 120 transtype(A) ::= DEFERRED(X). {A = @X;} 121 transtype(A) ::= IMMEDIATE(X). {A = @X;} 122 transtype(A) ::= EXCLUSIVE(X). {A = @X;} 123 cmd ::= COMMIT trans_opt. {sqlite3CommitTransaction(pParse);} 124 cmd ::= END trans_opt. {sqlite3CommitTransaction(pParse);} 125 cmd ::= ROLLBACK trans_opt. {sqlite3RollbackTransaction(pParse);} 126 127 ///////////////////// The CREATE TABLE statement //////////////////////////// 128 // 129 cmd ::= create_table create_table_args. 130 create_table ::= CREATE(X) temp(T) TABLE nm(Y) dbnm(Z). { 131 sqlite3StartTable(pParse,&X,&Y,&Z,T,0); 132 } 133 %type temp {int} 134 %ifndef SQLITE_OMIT_TEMPDB 135 temp(A) ::= TEMP. {A = 1;} 136 %endif 137 temp(A) ::= . {A = 0;} 138 create_table_args ::= LP columnlist conslist_opt(X) RP(Y). { 139 sqlite3EndTable(pParse,&X,&Y,0); 140 } 141 create_table_args ::= AS select(S). { 142 sqlite3EndTable(pParse,0,0,S); 143 sqlite3SelectDelete(S); 144 } 145 columnlist ::= columnlist COMMA column. 146 columnlist ::= column. 147 148 // A "column" is a complete description of a single column in a 149 // CREATE TABLE statement. This includes the column name, its 150 // datatype, and other keywords such as PRIMARY KEY, UNIQUE, REFERENCES, 151 // NOT NULL and so forth. 152 // 153 column(A) ::= columnid(X) type carglist. { 154 A.z = X.z; 155 A.n = (pParse->sLastToken.z-X.z) + pParse->sLastToken.n; 156 } 157 columnid(A) ::= nm(X). { 158 sqlite3AddColumn(pParse,&X); 159 A = X; 160 } 161 162 163 // An IDENTIFIER can be a generic identifier, or one of several 164 // keywords. Any non-standard keyword can also be an identifier. 165 // 166 %type id {Token} 167 id(A) ::= ID(X). {A = X;} 168 169 // The following directive causes tokens ABORT, AFTER, ASC, etc. to 170 // fallback to ID if they will not parse as their original value. 171 // This obviates the need for the "id" nonterminal. 172 // 173 %fallback ID 174 ABORT AFTER ANALYZE ASC ATTACH BEFORE BEGIN CASCADE CAST CONFLICT 175 DATABASE DEFERRED DESC DETACH EACH END EXCLUSIVE EXPLAIN FAIL FOR 176 IGNORE IMMEDIATE INITIALLY INSTEAD LIKE_KW MATCH PLAN QUERY KEY 177 OF OFFSET PRAGMA RAISE REPLACE RESTRICT ROW STATEMENT 178 TEMP TRIGGER VACUUM VIEW 179 %ifdef SQLITE_OMIT_COMPOUND_SELECT 180 EXCEPT INTERSECT UNION 181 %endif 182 REINDEX RENAME CTIME_KW ALTER 183 . 184 185 // Define operator precedence early so that this is the first occurance 186 // of the operator tokens in the grammer. Keeping the operators together 187 // causes them to be assigned integer values that are close together, 188 // which keeps parser tables smaller. 189 // 190 // The token values assigned to these symbols is determined by the order 191 // in which lemon first sees them. It must be the case that ISNULL/NOTNULL, 192 // NE/EQ, GT/LE, and GE/LT are separated by only a single value. See 193 // the sqlite3ExprIfFalse() routine for additional information on this 194 // constraint. 195 // 196 %left OR. 197 %left AND. 198 %right NOT. 199 %left IS LIKE_KW BETWEEN IN ISNULL NOTNULL NE EQ. 200 %left GT LE LT GE. 201 %right ESCAPE. 202 %left BITAND BITOR LSHIFT RSHIFT. 203 %left PLUS MINUS. 204 %left STAR SLASH REM. 205 %left CONCAT. 206 %right UMINUS UPLUS BITNOT. 207 208 // And "ids" is an identifer-or-string. 209 // 210 %type ids {Token} 211 ids(A) ::= ID(X). {A = X;} 212 ids(A) ::= STRING(X). {A = X;} 213 214 // The name of a column or table can be any of the following: 215 // 216 %type nm {Token} 217 nm(A) ::= ID(X). {A = X;} 218 nm(A) ::= STRING(X). {A = X;} 219 nm(A) ::= JOIN_KW(X). {A = X;} 220 221 // A typetoken is really one or more tokens that form a type name such 222 // as can be found after the column name in a CREATE TABLE statement. 223 // Multiple tokens are concatenated to form the value of the typetoken. 224 // 225 %type typetoken {Token} 226 type ::= . 227 type ::= typetoken(X). {sqlite3AddColumnType(pParse,&X);} 228 typetoken(A) ::= typename(X). {A = X;} 229 typetoken(A) ::= typename(X) LP signed RP(Y). { 230 A.z = X.z; 231 A.n = &Y.z[Y.n] - X.z; 232 } 233 typetoken(A) ::= typename(X) LP signed COMMA signed RP(Y). { 234 A.z = X.z; 235 A.n = &Y.z[Y.n] - X.z; 236 } 237 %type typename {Token} 238 typename(A) ::= ids(X). {A = X;} 239 typename(A) ::= typename(X) ids(Y). {A.z=X.z; A.n=Y.n+(Y.z-X.z);} 240 %type signed {int} 241 signed(A) ::= plus_num(X). { A = atoi(X.z); } 242 signed(A) ::= minus_num(X). { A = -atoi(X.z); } 243 244 // "carglist" is a list of additional constraints that come after the 245 // column name and column type in a CREATE TABLE statement. 246 // 247 carglist ::= carglist carg. 248 carglist ::= . 249 carg ::= CONSTRAINT nm ccons. 250 carg ::= ccons. 251 carg ::= DEFAULT term(X). {sqlite3AddDefaultValue(pParse,X);} 252 carg ::= DEFAULT LP expr(X) RP. {sqlite3AddDefaultValue(pParse,X);} 253 carg ::= DEFAULT PLUS term(X). {sqlite3AddDefaultValue(pParse,X);} 254 carg ::= DEFAULT MINUS term(X). { 255 Expr *p = sqlite3Expr(TK_UMINUS, X, 0, 0); 256 sqlite3AddDefaultValue(pParse,p); 257 } 258 carg ::= DEFAULT id(X). { 259 Expr *p = sqlite3Expr(TK_STRING, 0, 0, &X); 260 sqlite3AddDefaultValue(pParse,p); 261 } 262 263 // In addition to the type name, we also care about the primary key and 264 // UNIQUE constraints. 265 // 266 ccons ::= NULL onconf. 267 ccons ::= NOT NULL onconf(R). {sqlite3AddNotNull(pParse, R);} 268 ccons ::= PRIMARY KEY sortorder onconf(R) autoinc(I). 269 {sqlite3AddPrimaryKey(pParse,0,R,I);} 270 ccons ::= UNIQUE onconf(R). {sqlite3CreateIndex(pParse,0,0,0,0,R,0,0);} 271 ccons ::= CHECK LP expr(X) RP onconf. {sqlite3ExprDelete(X);} 272 ccons ::= REFERENCES nm(T) idxlist_opt(TA) refargs(R). 273 {sqlite3CreateForeignKey(pParse,0,&T,TA,R);} 274 ccons ::= defer_subclause(D). {sqlite3DeferForeignKey(pParse,D);} 275 ccons ::= COLLATE id(C). {sqlite3AddCollateType(pParse, C.z, C.n);} 276 277 // The optional AUTOINCREMENT keyword 278 %type autoinc {int} 279 autoinc(X) ::= . {X = 0;} 280 autoinc(X) ::= AUTOINCR. {X = 1;} 281 282 // The next group of rules parses the arguments to a REFERENCES clause 283 // that determine if the referential integrity checking is deferred or 284 // or immediate and which determine what action to take if a ref-integ 285 // check fails. 286 // 287 %type refargs {int} 288 refargs(A) ::= . { A = OE_Restrict * 0x010101; } 289 refargs(A) ::= refargs(X) refarg(Y). { A = (X & Y.mask) | Y.value; } 290 %type refarg {struct {int value; int mask;}} 291 refarg(A) ::= MATCH nm. { A.value = 0; A.mask = 0x000000; } 292 refarg(A) ::= ON DELETE refact(X). { A.value = X; A.mask = 0x0000ff; } 293 refarg(A) ::= ON UPDATE refact(X). { A.value = X<<8; A.mask = 0x00ff00; } 294 refarg(A) ::= ON INSERT refact(X). { A.value = X<<16; A.mask = 0xff0000; } 295 %type refact {int} 296 refact(A) ::= SET NULL. { A = OE_SetNull; } 297 refact(A) ::= SET DEFAULT. { A = OE_SetDflt; } 298 refact(A) ::= CASCADE. { A = OE_Cascade; } 299 refact(A) ::= RESTRICT. { A = OE_Restrict; } 300 %type defer_subclause {int} 301 defer_subclause(A) ::= NOT DEFERRABLE init_deferred_pred_opt(X). {A = X;} 302 defer_subclause(A) ::= DEFERRABLE init_deferred_pred_opt(X). {A = X;} 303 %type init_deferred_pred_opt {int} 304 init_deferred_pred_opt(A) ::= . {A = 0;} 305 init_deferred_pred_opt(A) ::= INITIALLY DEFERRED. {A = 1;} 306 init_deferred_pred_opt(A) ::= INITIALLY IMMEDIATE. {A = 0;} 307 308 // For the time being, the only constraint we care about is the primary 309 // key and UNIQUE. Both create indices. 310 // 311 conslist_opt(A) ::= . {A.n = 0; A.z = 0;} 312 conslist_opt(A) ::= COMMA(X) conslist. {A = X;} 313 conslist ::= conslist COMMA tcons. 314 conslist ::= conslist tcons. 315 conslist ::= tcons. 316 tcons ::= CONSTRAINT nm. 317 tcons ::= PRIMARY KEY LP idxlist(X) autoinc(I) RP onconf(R). 318 {sqlite3AddPrimaryKey(pParse,X,R,I);} 319 tcons ::= UNIQUE LP idxlist(X) RP onconf(R). 320 {sqlite3CreateIndex(pParse,0,0,0,X,R,0,0);} 321 tcons ::= CHECK expr onconf. 322 tcons ::= FOREIGN KEY LP idxlist(FA) RP 323 REFERENCES nm(T) idxlist_opt(TA) refargs(R) defer_subclause_opt(D). { 324 sqlite3CreateForeignKey(pParse, FA, &T, TA, R); 325 sqlite3DeferForeignKey(pParse, D); 326 } 327 %type defer_subclause_opt {int} 328 defer_subclause_opt(A) ::= . {A = 0;} 329 defer_subclause_opt(A) ::= defer_subclause(X). {A = X;} 330 331 // The following is a non-standard extension that allows us to declare the 332 // default behavior when there is a constraint conflict. 333 // 334 %type onconf {int} 335 %type orconf {int} 336 %type resolvetype {int} 337 onconf(A) ::= . {A = OE_Default;} 338 onconf(A) ::= ON CONFLICT resolvetype(X). {A = X;} 339 orconf(A) ::= . {A = OE_Default;} 340 orconf(A) ::= OR resolvetype(X). {A = X;} 341 resolvetype(A) ::= raisetype(X). {A = X;} 342 resolvetype(A) ::= IGNORE. {A = OE_Ignore;} 343 resolvetype(A) ::= REPLACE. {A = OE_Replace;} 344 345 ////////////////////////// The DROP TABLE ///////////////////////////////////// 346 // 347 cmd ::= DROP TABLE fullname(X). { 348 sqlite3DropTable(pParse, X, 0); 349 } 350 351 ///////////////////// The CREATE VIEW statement ///////////////////////////// 352 // 353 %ifndef SQLITE_OMIT_VIEW 354 cmd ::= CREATE(X) temp(T) VIEW nm(Y) dbnm(Z) AS select(S). { 355 sqlite3CreateView(pParse, &X, &Y, &Z, S, T); 356 } 357 cmd ::= DROP VIEW fullname(X). { 358 sqlite3DropTable(pParse, X, 1); 359 } 360 %endif // SQLITE_OMIT_VIEW 361 362 //////////////////////// The SELECT statement ///////////////////////////////// 363 // 364 cmd ::= select(X). { 365 sqlite3Select(pParse, X, SRT_Callback, 0, 0, 0, 0, 0); 366 sqlite3SelectDelete(X); 367 } 368 369 %type select {Select*} 370 %destructor select {sqlite3SelectDelete($$);} 371 %type oneselect {Select*} 372 %destructor oneselect {sqlite3SelectDelete($$);} 373 374 select(A) ::= oneselect(X). {A = X;} 375 %ifndef SQLITE_OMIT_COMPOUND_SELECT 376 select(A) ::= select(X) multiselect_op(Y) oneselect(Z). { 377 if( Z ){ 378 Z->op = Y; 379 Z->pPrior = X; 380 } 381 A = Z; 382 } 383 %type multiselect_op {int} 384 multiselect_op(A) ::= UNION(OP). {A = @OP;} 385 multiselect_op(A) ::= UNION ALL. {A = TK_ALL;} 386 multiselect_op(A) ::= INTERSECT(OP). {A = @OP;} 387 multiselect_op(A) ::= EXCEPT(OP). {A = @OP;} 388 %endif // SQLITE_OMIT_COMPOUND_SELECT 389 oneselect(A) ::= SELECT distinct(D) selcollist(W) from(X) where_opt(Y) 390 groupby_opt(P) having_opt(Q) orderby_opt(Z) limit_opt(L). { 391 A = sqlite3SelectNew(W,X,Y,P,Q,Z,D,L.pLimit,L.pOffset); 392 } 393 394 // The "distinct" nonterminal is true (1) if the DISTINCT keyword is 395 // present and false (0) if it is not. 396 // 397 %type distinct {int} 398 distinct(A) ::= DISTINCT. {A = 1;} 399 distinct(A) ::= ALL. {A = 0;} 400 distinct(A) ::= . {A = 0;} 401 402 // selcollist is a list of expressions that are to become the return 403 // values of the SELECT statement. The "*" in statements like 404 // "SELECT * FROM ..." is encoded as a special expression with an 405 // opcode of TK_ALL. 406 // 407 %type selcollist {ExprList*} 408 %destructor selcollist {sqlite3ExprListDelete($$);} 409 %type sclp {ExprList*} 410 %destructor sclp {sqlite3ExprListDelete($$);} 411 sclp(A) ::= selcollist(X) COMMA. {A = X;} 412 sclp(A) ::= . {A = 0;} 413 selcollist(A) ::= sclp(P) expr(X) as(Y). { 414 A = sqlite3ExprListAppend(P,X,Y.n?&Y:0); 415 } 416 selcollist(A) ::= sclp(P) STAR. { 417 A = sqlite3ExprListAppend(P, sqlite3Expr(TK_ALL, 0, 0, 0), 0); 418 } 419 selcollist(A) ::= sclp(P) nm(X) DOT STAR. { 420 Expr *pRight = sqlite3Expr(TK_ALL, 0, 0, 0); 421 Expr *pLeft = sqlite3Expr(TK_ID, 0, 0, &X); 422 A = sqlite3ExprListAppend(P, sqlite3Expr(TK_DOT, pLeft, pRight, 0), 0); 423 } 424 425 // An option "AS <id>" phrase that can follow one of the expressions that 426 // define the result set, or one of the tables in the FROM clause. 427 // 428 %type as {Token} 429 as(X) ::= AS nm(Y). {X = Y;} 430 as(X) ::= ids(Y). {X = Y;} 431 as(X) ::= . {X.n = 0;} 432 433 434 %type seltablist {SrcList*} 435 %destructor seltablist {sqlite3SrcListDelete($$);} 436 %type stl_prefix {SrcList*} 437 %destructor stl_prefix {sqlite3SrcListDelete($$);} 438 %type from {SrcList*} 439 %destructor from {sqlite3SrcListDelete($$);} 440 441 // A complete FROM clause. 442 // 443 from(A) ::= . {A = sqliteMalloc(sizeof(*A));} 444 from(A) ::= FROM seltablist(X). {A = X;} 445 446 // "seltablist" is a "Select Table List" - the content of the FROM clause 447 // in a SELECT statement. "stl_prefix" is a prefix of this list. 448 // 449 stl_prefix(A) ::= seltablist(X) joinop(Y). { 450 A = X; 451 if( A && A->nSrc>0 ) A->a[A->nSrc-1].jointype = Y; 452 } 453 stl_prefix(A) ::= . {A = 0;} 454 seltablist(A) ::= stl_prefix(X) nm(Y) dbnm(D) as(Z) on_opt(N) using_opt(U). { 455 A = sqlite3SrcListAppend(X,&Y,&D); 456 if( Z.n ) sqlite3SrcListAddAlias(A,&Z); 457 if( N ){ 458 if( A && A->nSrc>1 ){ A->a[A->nSrc-2].pOn = N; } 459 else { sqlite3ExprDelete(N); } 460 } 461 if( U ){ 462 if( A && A->nSrc>1 ){ A->a[A->nSrc-2].pUsing = U; } 463 else { sqlite3IdListDelete(U); } 464 } 465 } 466 %ifndef SQLITE_OMIT_SUBQUERY 467 seltablist(A) ::= stl_prefix(X) LP seltablist_paren(S) RP 468 as(Z) on_opt(N) using_opt(U). { 469 A = sqlite3SrcListAppend(X,0,0); 470 A->a[A->nSrc-1].pSelect = S; 471 if( Z.n ) sqlite3SrcListAddAlias(A,&Z); 472 if( N ){ 473 if( A && A->nSrc>1 ){ A->a[A->nSrc-2].pOn = N; } 474 else { sqlite3ExprDelete(N); } 475 } 476 if( U ){ 477 if( A && A->nSrc>1 ){ A->a[A->nSrc-2].pUsing = U; } 478 else { sqlite3IdListDelete(U); } 479 } 480 } 481 482 // A seltablist_paren nonterminal represents anything in a FROM that 483 // is contained inside parentheses. This can be either a subquery or 484 // a grouping of table and subqueries. 485 // 486 %type seltablist_paren {Select*} 487 %destructor seltablist_paren {sqlite3SelectDelete($$);} 488 seltablist_paren(A) ::= select(S). {A = S;} 489 seltablist_paren(A) ::= seltablist(F). { 490 A = sqlite3SelectNew(0,F,0,0,0,0,0,0,0); 491 } 492 %endif // SQLITE_OMIT_SUBQUERY 493 494 %type dbnm {Token} 495 dbnm(A) ::= . {A.z=0; A.n=0;} 496 dbnm(A) ::= DOT nm(X). {A = X;} 497 498 %type fullname {SrcList*} 499 %destructor fullname {sqlite3SrcListDelete($$);} 500 fullname(A) ::= nm(X) dbnm(Y). {A = sqlite3SrcListAppend(0,&X,&Y);} 501 502 %type joinop {int} 503 %type joinop2 {int} 504 joinop(X) ::= COMMA. { X = JT_INNER; } 505 joinop(X) ::= JOIN. { X = JT_INNER; } 506 joinop(X) ::= JOIN_KW(A) JOIN. { X = sqlite3JoinType(pParse,&A,0,0); } 507 joinop(X) ::= JOIN_KW(A) nm(B) JOIN. { X = sqlite3JoinType(pParse,&A,&B,0); } 508 joinop(X) ::= JOIN_KW(A) nm(B) nm(C) JOIN. 509 { X = sqlite3JoinType(pParse,&A,&B,&C); } 510 511 %type on_opt {Expr*} 512 %destructor on_opt {sqlite3ExprDelete($$);} 513 on_opt(N) ::= ON expr(E). {N = E;} 514 on_opt(N) ::= . {N = 0;} 515 516 %type using_opt {IdList*} 517 %destructor using_opt {sqlite3IdListDelete($$);} 518 using_opt(U) ::= USING LP inscollist(L) RP. {U = L;} 519 using_opt(U) ::= . {U = 0;} 520 521 522 %type orderby_opt {ExprList*} 523 %destructor orderby_opt {sqlite3ExprListDelete($$);} 524 %type sortlist {ExprList*} 525 %destructor sortlist {sqlite3ExprListDelete($$);} 526 %type sortitem {Expr*} 527 %destructor sortitem {sqlite3ExprDelete($$);} 528 529 orderby_opt(A) ::= . {A = 0;} 530 orderby_opt(A) ::= ORDER BY sortlist(X). {A = X;} 531 sortlist(A) ::= sortlist(X) COMMA sortitem(Y) collate(C) sortorder(Z). { 532 A = sqlite3ExprListAppend(X,Y,C.n>0?&C:0); 533 if( A ) A->a[A->nExpr-1].sortOrder = Z; 534 } 535 sortlist(A) ::= sortitem(Y) collate(C) sortorder(Z). { 536 A = sqlite3ExprListAppend(0,Y,C.n>0?&C:0); 537 if( A && A->a ) A->a[0].sortOrder = Z; 538 } 539 sortitem(A) ::= expr(X). {A = X;} 540 541 %type sortorder {int} 542 %type collate {Token} 543 544 sortorder(A) ::= ASC. {A = SQLITE_SO_ASC;} 545 sortorder(A) ::= DESC. {A = SQLITE_SO_DESC;} 546 sortorder(A) ::= . {A = SQLITE_SO_ASC;} 547 collate(C) ::= . {C.z = 0; C.n = 0;} 548 collate(C) ::= COLLATE id(X). {C = X;} 549 550 %type groupby_opt {ExprList*} 551 %destructor groupby_opt {sqlite3ExprListDelete($$);} 552 groupby_opt(A) ::= . {A = 0;} 553 groupby_opt(A) ::= GROUP BY exprlist(X). {A = X;} 554 555 %type having_opt {Expr*} 556 %destructor having_opt {sqlite3ExprDelete($$);} 557 having_opt(A) ::= . {A = 0;} 558 having_opt(A) ::= HAVING expr(X). {A = X;} 559 560 %type limit_opt {struct LimitVal} 561 %destructor limit_opt { 562 sqlite3ExprDelete($$.pLimit); 563 sqlite3ExprDelete($$.pOffset); 564 } 565 limit_opt(A) ::= . {A.pLimit = 0; A.pOffset = 0;} 566 limit_opt(A) ::= LIMIT expr(X). {A.pLimit = X; A.pOffset = 0;} 567 limit_opt(A) ::= LIMIT expr(X) OFFSET expr(Y). 568 {A.pLimit = X; A.pOffset = Y;} 569 limit_opt(A) ::= LIMIT expr(X) COMMA expr(Y). 570 {A.pOffset = X; A.pLimit = Y;} 571 572 /////////////////////////// The DELETE statement ///////////////////////////// 573 // 574 cmd ::= DELETE FROM fullname(X) where_opt(Y). {sqlite3DeleteFrom(pParse,X,Y);} 575 576 %type where_opt {Expr*} 577 %destructor where_opt {sqlite3ExprDelete($$);} 578 579 where_opt(A) ::= . {A = 0;} 580 where_opt(A) ::= WHERE expr(X). {A = X;} 581 582 ////////////////////////// The UPDATE command //////////////////////////////// 583 // 584 cmd ::= UPDATE orconf(R) fullname(X) SET setlist(Y) where_opt(Z). 585 {sqlite3Update(pParse,X,Y,Z,R);} 586 587 %type setlist {ExprList*} 588 %destructor setlist {sqlite3ExprListDelete($$);} 589 590 setlist(A) ::= setlist(Z) COMMA nm(X) EQ expr(Y). 591 {A = sqlite3ExprListAppend(Z,Y,&X);} 592 setlist(A) ::= nm(X) EQ expr(Y). {A = sqlite3ExprListAppend(0,Y,&X);} 593 594 ////////////////////////// The INSERT command ///////////////////////////////// 595 // 596 cmd ::= insert_cmd(R) INTO fullname(X) inscollist_opt(F) 597 VALUES LP itemlist(Y) RP. 598 {sqlite3Insert(pParse, X, Y, 0, F, R);} 599 cmd ::= insert_cmd(R) INTO fullname(X) inscollist_opt(F) select(S). 600 {sqlite3Insert(pParse, X, 0, S, F, R);} 601 602 %type insert_cmd {int} 603 insert_cmd(A) ::= INSERT orconf(R). {A = R;} 604 insert_cmd(A) ::= REPLACE. {A = OE_Replace;} 605 606 607 %type itemlist {ExprList*} 608 %destructor itemlist {sqlite3ExprListDelete($$);} 609 610 itemlist(A) ::= itemlist(X) COMMA expr(Y). {A = sqlite3ExprListAppend(X,Y,0);} 611 itemlist(A) ::= expr(X). {A = sqlite3ExprListAppend(0,X,0);} 612 613 %type inscollist_opt {IdList*} 614 %destructor inscollist_opt {sqlite3IdListDelete($$);} 615 %type inscollist {IdList*} 616 %destructor inscollist {sqlite3IdListDelete($$);} 617 618 inscollist_opt(A) ::= . {A = 0;} 619 inscollist_opt(A) ::= LP inscollist(X) RP. {A = X;} 620 inscollist(A) ::= inscollist(X) COMMA nm(Y). {A = sqlite3IdListAppend(X,&Y);} 621 inscollist(A) ::= nm(Y). {A = sqlite3IdListAppend(0,&Y);} 622 623 /////////////////////////// Expression Processing ///////////////////////////// 624 // 625 626 %type expr {Expr*} 627 %destructor expr {sqlite3ExprDelete($$);} 628 %type term {Expr*} 629 %destructor term {sqlite3ExprDelete($$);} 630 631 expr(A) ::= term(X). {A = X;} 632 expr(A) ::= LP(B) expr(X) RP(E). {A = X; sqlite3ExprSpan(A,&B,&E); } 633 term(A) ::= NULL(X). {A = sqlite3Expr(@X, 0, 0, &X);} 634 expr(A) ::= ID(X). {A = sqlite3Expr(TK_ID, 0, 0, &X);} 635 expr(A) ::= JOIN_KW(X). {A = sqlite3Expr(TK_ID, 0, 0, &X);} 636 expr(A) ::= nm(X) DOT nm(Y). { 637 Expr *temp1 = sqlite3Expr(TK_ID, 0, 0, &X); 638 Expr *temp2 = sqlite3Expr(TK_ID, 0, 0, &Y); 639 A = sqlite3Expr(TK_DOT, temp1, temp2, 0); 640 } 641 expr(A) ::= nm(X) DOT nm(Y) DOT nm(Z). { 642 Expr *temp1 = sqlite3Expr(TK_ID, 0, 0, &X); 643 Expr *temp2 = sqlite3Expr(TK_ID, 0, 0, &Y); 644 Expr *temp3 = sqlite3Expr(TK_ID, 0, 0, &Z); 645 Expr *temp4 = sqlite3Expr(TK_DOT, temp2, temp3, 0); 646 A = sqlite3Expr(TK_DOT, temp1, temp4, 0); 647 } 648 term(A) ::= INTEGER(X). {A = sqlite3Expr(@X, 0, 0, &X);} 649 term(A) ::= FLOAT(X). {A = sqlite3Expr(@X, 0, 0, &X);} 650 term(A) ::= STRING(X). {A = sqlite3Expr(@X, 0, 0, &X);} 651 term(A) ::= BLOB(X). {A = sqlite3Expr(@X, 0, 0, &X);} 652 expr(A) ::= REGISTER(X). {A = sqlite3RegisterExpr(pParse, &X);} 653 expr(A) ::= VARIABLE(X). { 654 Token *pToken = &X; 655 Expr *pExpr = A = sqlite3Expr(TK_VARIABLE, 0, 0, pToken); 656 sqlite3ExprAssignVarNumber(pParse, pExpr); 657 } 658 %ifndef SQLITE_OMIT_CAST 659 expr(A) ::= CAST(X) LP expr(E) AS typetoken(T) RP(Y). { 660 A = sqlite3Expr(TK_CAST, E, 0, &T); 661 sqlite3ExprSpan(A,&X,&Y); 662 } 663 %endif // SQLITE_OMIT_CAST 664 expr(A) ::= ID(X) LP distinct(D) exprlist(Y) RP(E). { 665 A = sqlite3ExprFunction(Y, &X); 666 sqlite3ExprSpan(A,&X,&E); 667 if( D ){ 668 A->flags |= EP_Distinct; 669 } 670 } 671 expr(A) ::= ID(X) LP STAR RP(E). { 672 A = sqlite3ExprFunction(0, &X); 673 sqlite3ExprSpan(A,&X,&E); 674 } 675 term(A) ::= CTIME_KW(OP). { 676 /* The CURRENT_TIME, CURRENT_DATE, and CURRENT_TIMESTAMP values are 677 ** treated as functions that return constants */ 678 A = sqlite3ExprFunction(0,&OP); 679 if( A ) A->op = TK_CONST_FUNC; 680 } 681 expr(A) ::= expr(X) AND(OP) expr(Y). {A = sqlite3Expr(@OP, X, Y, 0);} 682 expr(A) ::= expr(X) OR(OP) expr(Y). {A = sqlite3Expr(@OP, X, Y, 0);} 683 expr(A) ::= expr(X) LT(OP) expr(Y). {A = sqlite3Expr(@OP, X, Y, 0);} 684 expr(A) ::= expr(X) GT(OP) expr(Y). {A = sqlite3Expr(@OP, X, Y, 0);} 685 expr(A) ::= expr(X) LE(OP) expr(Y). {A = sqlite3Expr(@OP, X, Y, 0);} 686 expr(A) ::= expr(X) GE(OP) expr(Y). {A = sqlite3Expr(@OP, X, Y, 0);} 687 expr(A) ::= expr(X) NE(OP) expr(Y). {A = sqlite3Expr(@OP, X, Y, 0);} 688 expr(A) ::= expr(X) EQ(OP) expr(Y). {A = sqlite3Expr(@OP, X, Y, 0);} 689 expr(A) ::= expr(X) BITAND(OP) expr(Y). {A = sqlite3Expr(@OP, X, Y, 0);} 690 expr(A) ::= expr(X) BITOR(OP) expr(Y). {A = sqlite3Expr(@OP, X, Y, 0);} 691 expr(A) ::= expr(X) LSHIFT(OP) expr(Y). {A = sqlite3Expr(@OP, X, Y, 0);} 692 expr(A) ::= expr(X) RSHIFT(OP) expr(Y). {A = sqlite3Expr(@OP, X, Y, 0);} 693 expr(A) ::= expr(X) PLUS(OP) expr(Y). {A = sqlite3Expr(@OP, X, Y, 0);} 694 expr(A) ::= expr(X) MINUS(OP) expr(Y). {A = sqlite3Expr(@OP, X, Y, 0);} 695 expr(A) ::= expr(X) STAR(OP) expr(Y). {A = sqlite3Expr(@OP, X, Y, 0);} 696 expr(A) ::= expr(X) SLASH(OP) expr(Y). {A = sqlite3Expr(@OP, X, Y, 0);} 697 expr(A) ::= expr(X) REM(OP) expr(Y). {A = sqlite3Expr(@OP, X, Y, 0);} 698 expr(A) ::= expr(X) CONCAT(OP) expr(Y). {A = sqlite3Expr(@OP, X, Y, 0);} 699 %type likeop {struct LikeOp} 700 likeop(A) ::= LIKE_KW(X). {A.operator = X; A.not = 0;} 701 likeop(A) ::= NOT LIKE_KW(X). {A.operator = X; A.not = 1;} 702 %type escape {Expr*} 703 escape(X) ::= ESCAPE expr(A). [ESCAPE] {X = A;} 704 escape(X) ::= . [ESCAPE] {X = 0;} 705 expr(A) ::= expr(X) likeop(OP) expr(Y) escape(E). [LIKE_KW] { 706 ExprList *pList = sqlite3ExprListAppend(0, Y, 0); 707 pList = sqlite3ExprListAppend(pList, X, 0); 708 if( E ){ 709 pList = sqlite3ExprListAppend(pList, E, 0); 710 } 711 A = sqlite3ExprFunction(pList, &OP.operator); 712 if( OP.not ) A = sqlite3Expr(TK_NOT, A, 0, 0); 713 sqlite3ExprSpan(A, &X->span, &Y->span); 714 } 715 716 expr(A) ::= expr(X) ISNULL(E). { 717 A = sqlite3Expr(TK_ISNULL, X, 0, 0); 718 sqlite3ExprSpan(A,&X->span,&E); 719 } 720 expr(A) ::= expr(X) IS NULL(E). { 721 A = sqlite3Expr(TK_ISNULL, X, 0, 0); 722 sqlite3ExprSpan(A,&X->span,&E); 723 } 724 expr(A) ::= expr(X) NOTNULL(E). { 725 A = sqlite3Expr(TK_NOTNULL, X, 0, 0); 726 sqlite3ExprSpan(A,&X->span,&E); 727 } 728 expr(A) ::= expr(X) NOT NULL(E). { 729 A = sqlite3Expr(TK_NOTNULL, X, 0, 0); 730 sqlite3ExprSpan(A,&X->span,&E); 731 } 732 expr(A) ::= expr(X) IS NOT NULL(E). { 733 A = sqlite3Expr(TK_NOTNULL, X, 0, 0); 734 sqlite3ExprSpan(A,&X->span,&E); 735 } 736 expr(A) ::= NOT(B) expr(X). { 737 A = sqlite3Expr(@B, X, 0, 0); 738 sqlite3ExprSpan(A,&B,&X->span); 739 } 740 expr(A) ::= BITNOT(B) expr(X). { 741 A = sqlite3Expr(@B, X, 0, 0); 742 sqlite3ExprSpan(A,&B,&X->span); 743 } 744 expr(A) ::= MINUS(B) expr(X). [UMINUS] { 745 A = sqlite3Expr(TK_UMINUS, X, 0, 0); 746 sqlite3ExprSpan(A,&B,&X->span); 747 } 748 expr(A) ::= PLUS(B) expr(X). [UPLUS] { 749 A = sqlite3Expr(TK_UPLUS, X, 0, 0); 750 sqlite3ExprSpan(A,&B,&X->span); 751 } 752 %type between_op {int} 753 between_op(A) ::= BETWEEN. {A = 0;} 754 between_op(A) ::= NOT BETWEEN. {A = 1;} 755 expr(A) ::= expr(W) between_op(N) expr(X) AND expr(Y). [BETWEEN] { 756 ExprList *pList = sqlite3ExprListAppend(0, X, 0); 757 pList = sqlite3ExprListAppend(pList, Y, 0); 758 A = sqlite3Expr(TK_BETWEEN, W, 0, 0); 759 if( A ){ 760 A->pList = pList; 761 }else{ 762 sqlite3ExprListDelete(pList); 763 } 764 if( N ) A = sqlite3Expr(TK_NOT, A, 0, 0); 765 sqlite3ExprSpan(A,&W->span,&Y->span); 766 } 767 %ifndef SQLITE_OMIT_SUBQUERY 768 %type in_op {int} 769 in_op(A) ::= IN. {A = 0;} 770 in_op(A) ::= NOT IN. {A = 1;} 771 expr(A) ::= expr(X) in_op(N) LP exprlist(Y) RP(E). [IN] { 772 A = sqlite3Expr(TK_IN, X, 0, 0); 773 if( A ){ 774 A->pList = Y; 775 }else{ 776 sqlite3ExprListDelete(Y); 777 } 778 if( N ) A = sqlite3Expr(TK_NOT, A, 0, 0); 779 sqlite3ExprSpan(A,&X->span,&E); 780 } 781 expr(A) ::= LP(B) select(X) RP(E). { 782 A = sqlite3Expr(TK_SELECT, 0, 0, 0); 783 if( A ){ 784 A->pSelect = X; 785 }else{ 786 sqlite3SelectDelete(X); 787 } 788 sqlite3ExprSpan(A,&B,&E); 789 } 790 expr(A) ::= expr(X) in_op(N) LP select(Y) RP(E). [IN] { 791 A = sqlite3Expr(TK_IN, X, 0, 0); 792 if( A ){ 793 A->pSelect = Y; 794 }else{ 795 sqlite3SelectDelete(Y); 796 } 797 if( N ) A = sqlite3Expr(TK_NOT, A, 0, 0); 798 sqlite3ExprSpan(A,&X->span,&E); 799 } 800 expr(A) ::= expr(X) in_op(N) nm(Y) dbnm(Z). [IN] { 801 SrcList *pSrc = sqlite3SrcListAppend(0,&Y,&Z); 802 A = sqlite3Expr(TK_IN, X, 0, 0); 803 if( A ){ 804 A->pSelect = sqlite3SelectNew(0,pSrc,0,0,0,0,0,0,0); 805 }else{ 806 sqlite3SrcListDelete(pSrc); 807 } 808 if( N ) A = sqlite3Expr(TK_NOT, A, 0, 0); 809 sqlite3ExprSpan(A,&X->span,Z.z?&Z:&Y); 810 } 811 expr(A) ::= EXISTS(B) LP select(Y) RP(E). { 812 Expr *p = A = sqlite3Expr(TK_EXISTS, 0, 0, 0); 813 if( p ){ 814 p->pSelect = Y; 815 sqlite3ExprSpan(p,&B,&E); 816 }else{ 817 sqlite3SelectDelete(Y); 818 } 819 } 820 %endif // SQLITE_OMIT_SUBQUERY 821 822 /* CASE expressions */ 823 expr(A) ::= CASE(C) case_operand(X) case_exprlist(Y) case_else(Z) END(E). { 824 A = sqlite3Expr(TK_CASE, X, Z, 0); 825 if( A ){ 826 A->pList = Y; 827 }else{ 828 sqlite3ExprListDelete(Y); 829 } 830 sqlite3ExprSpan(A, &C, &E); 831 } 832 %type case_exprlist {ExprList*} 833 %destructor case_exprlist {sqlite3ExprListDelete($$);} 834 case_exprlist(A) ::= case_exprlist(X) WHEN expr(Y) THEN expr(Z). { 835 A = sqlite3ExprListAppend(X, Y, 0); 836 A = sqlite3ExprListAppend(A, Z, 0); 837 } 838 case_exprlist(A) ::= WHEN expr(Y) THEN expr(Z). { 839 A = sqlite3ExprListAppend(0, Y, 0); 840 A = sqlite3ExprListAppend(A, Z, 0); 841 } 842 %type case_else {Expr*} 843 case_else(A) ::= ELSE expr(X). {A = X;} 844 case_else(A) ::= . {A = 0;} 845 %type case_operand {Expr*} 846 case_operand(A) ::= expr(X). {A = X;} 847 case_operand(A) ::= . {A = 0;} 848 849 %type exprlist {ExprList*} 850 %destructor exprlist {sqlite3ExprListDelete($$);} 851 %type expritem {Expr*} 852 %destructor expritem {sqlite3ExprDelete($$);} 853 854 exprlist(A) ::= exprlist(X) COMMA expritem(Y). 855 {A = sqlite3ExprListAppend(X,Y,0);} 856 exprlist(A) ::= expritem(X). {A = sqlite3ExprListAppend(0,X,0);} 857 expritem(A) ::= expr(X). {A = X;} 858 expritem(A) ::= . {A = 0;} 859 860 ///////////////////////////// The CREATE INDEX command /////////////////////// 861 // 862 cmd ::= CREATE(S) uniqueflag(U) INDEX nm(X) dbnm(D) 863 ON nm(Y) LP idxlist(Z) RP(E) onconf(R). { 864 if( U!=OE_None ) U = R; 865 if( U==OE_Default) U = OE_Abort; 866 sqlite3CreateIndex(pParse, &X, &D, sqlite3SrcListAppend(0,&Y,0),Z,U, &S, &E); 867 } 868 869 %type uniqueflag {int} 870 uniqueflag(A) ::= UNIQUE. {A = OE_Abort;} 871 uniqueflag(A) ::= . {A = OE_None;} 872 873 %type idxlist {ExprList*} 874 %destructor idxlist {sqlite3ExprListDelete($$);} 875 %type idxlist_opt {ExprList*} 876 %destructor idxlist_opt {sqlite3ExprListDelete($$);} 877 %type idxitem {Token} 878 879 idxlist_opt(A) ::= . {A = 0;} 880 idxlist_opt(A) ::= LP idxlist(X) RP. {A = X;} 881 idxlist(A) ::= idxlist(X) COMMA idxitem(Y) collate(C) sortorder. { 882 Expr *p = 0; 883 if( C.n>0 ){ 884 p = sqlite3Expr(TK_COLUMN, 0, 0, 0); 885 if( p ) p->pColl = sqlite3LocateCollSeq(pParse, C.z, C.n); 886 } 887 A = sqlite3ExprListAppend(X, p, &Y); 888 } 889 idxlist(A) ::= idxitem(Y) collate(C) sortorder. { 890 Expr *p = 0; 891 if( C.n>0 ){ 892 p = sqlite3Expr(TK_COLUMN, 0, 0, 0); 893 if( p ) p->pColl = sqlite3LocateCollSeq(pParse, C.z, C.n); 894 } 895 A = sqlite3ExprListAppend(0, p, &Y); 896 } 897 idxitem(A) ::= nm(X). {A = X;} 898 899 900 ///////////////////////////// The DROP INDEX command ///////////////////////// 901 // 902 cmd ::= DROP INDEX fullname(X). {sqlite3DropIndex(pParse, X);} 903 904 ///////////////////////////// The VACUUM command ///////////////////////////// 905 // 906 cmd ::= VACUUM. {sqlite3Vacuum(pParse,0);} 907 cmd ::= VACUUM nm. {sqlite3Vacuum(pParse,0);} 908 909 ///////////////////////////// The PRAGMA command ///////////////////////////// 910 // 911 %ifndef SQLITE_OMIT_PRAGMA 912 cmd ::= PRAGMA nm(X) dbnm(Z) EQ nm(Y). {sqlite3Pragma(pParse,&X,&Z,&Y,0);} 913 cmd ::= PRAGMA nm(X) dbnm(Z) EQ ON(Y). {sqlite3Pragma(pParse,&X,&Z,&Y,0);} 914 cmd ::= PRAGMA nm(X) dbnm(Z) EQ plus_num(Y). {sqlite3Pragma(pParse,&X,&Z,&Y,0);} 915 cmd ::= PRAGMA nm(X) dbnm(Z) EQ minus_num(Y). { 916 sqlite3Pragma(pParse,&X,&Z,&Y,1); 917 } 918 cmd ::= PRAGMA nm(X) dbnm(Z) LP nm(Y) RP. {sqlite3Pragma(pParse,&X,&Z,&Y,0);} 919 cmd ::= PRAGMA nm(X) dbnm(Z). {sqlite3Pragma(pParse,&X,&Z,0,0);} 920 %endif // SQLITE_OMIT_PRAGMA 921 plus_num(A) ::= plus_opt number(X). {A = X;} 922 minus_num(A) ::= MINUS number(X). {A = X;} 923 number(A) ::= INTEGER(X). {A = X;} 924 number(A) ::= FLOAT(X). {A = X;} 925 plus_opt ::= PLUS. 926 plus_opt ::= . 927 928 //////////////////////////// The CREATE TRIGGER command ///////////////////// 929 930 %ifndef SQLITE_OMIT_TRIGGER 931 932 cmd ::= CREATE trigger_decl(A) BEGIN trigger_cmd_list(S) END(Z). { 933 Token all; 934 all.z = A.z; 935 all.n = (Z.z - A.z) + Z.n; 936 sqlite3FinishTrigger(pParse, S, &all); 937 } 938 939 trigger_decl(A) ::= temp(T) TRIGGER nm(B) dbnm(Z) trigger_time(C) 940 trigger_event(D) 941 ON fullname(E) foreach_clause(F) when_clause(G). { 942 sqlite3BeginTrigger(pParse, &B, &Z, C, D.a, D.b, E, F, G, T); 943 A = (Z.n==0?B:Z); 944 } 945 946 %type trigger_time {int} 947 trigger_time(A) ::= BEFORE. { A = TK_BEFORE; } 948 trigger_time(A) ::= AFTER. { A = TK_AFTER; } 949 trigger_time(A) ::= INSTEAD OF. { A = TK_INSTEAD;} 950 trigger_time(A) ::= . { A = TK_BEFORE; } 951 952 %type trigger_event {struct TrigEvent} 953 %destructor trigger_event {sqlite3IdListDelete($$.b);} 954 trigger_event(A) ::= DELETE(OP). {A.a = @OP; A.b = 0;} 955 trigger_event(A) ::= INSERT(OP). {A.a = @OP; A.b = 0;} 956 trigger_event(A) ::= UPDATE(OP). {A.a = @OP; A.b = 0;} 957 trigger_event(A) ::= UPDATE OF inscollist(X). {A.a = TK_UPDATE; A.b = X;} 958 959 %type foreach_clause {int} 960 foreach_clause(A) ::= . { A = TK_ROW; } 961 foreach_clause(A) ::= FOR EACH ROW. { A = TK_ROW; } 962 foreach_clause(A) ::= FOR EACH STATEMENT. { A = TK_STATEMENT; } 963 964 %type when_clause {Expr*} 965 when_clause(A) ::= . { A = 0; } 966 when_clause(A) ::= WHEN expr(X). { A = X; } 967 968 %type trigger_cmd_list {TriggerStep*} 969 %destructor trigger_cmd_list {sqlite3DeleteTriggerStep($$);} 970 trigger_cmd_list(A) ::= trigger_cmd(X) SEMI trigger_cmd_list(Y). { 971 X->pNext = Y; 972 A = X; 973 } 974 trigger_cmd_list(A) ::= . { A = 0; } 975 976 %type trigger_cmd {TriggerStep*} 977 %destructor trigger_cmd {sqlite3DeleteTriggerStep($$);} 978 // UPDATE 979 trigger_cmd(A) ::= UPDATE orconf(R) nm(X) SET setlist(Y) where_opt(Z). 980 { A = sqlite3TriggerUpdateStep(&X, Y, Z, R); } 981 982 // INSERT 983 trigger_cmd(A) ::= insert_cmd(R) INTO nm(X) inscollist_opt(F) 984 VALUES LP itemlist(Y) RP. 985 {A = sqlite3TriggerInsertStep(&X, F, Y, 0, R);} 986 987 trigger_cmd(A) ::= insert_cmd(R) INTO nm(X) inscollist_opt(F) select(S). 988 {A = sqlite3TriggerInsertStep(&X, F, 0, S, R);} 989 990 // DELETE 991 trigger_cmd(A) ::= DELETE FROM nm(X) where_opt(Y). 992 {A = sqlite3TriggerDeleteStep(&X, Y);} 993 994 // SELECT 995 trigger_cmd(A) ::= select(X). {A = sqlite3TriggerSelectStep(X); } 996 997 // The special RAISE expression that may occur in trigger programs 998 expr(A) ::= RAISE(X) LP IGNORE RP(Y). { 999 A = sqlite3Expr(TK_RAISE, 0, 0, 0); 1000 A->iColumn = OE_Ignore; 1001 sqlite3ExprSpan(A, &X, &Y); 1002 } 1003 expr(A) ::= RAISE(X) LP raisetype(T) COMMA nm(Z) RP(Y). { 1004 A = sqlite3Expr(TK_RAISE, 0, 0, &Z); 1005 A->iColumn = T; 1006 sqlite3ExprSpan(A, &X, &Y); 1007 } 1008 %endif // !SQLITE_OMIT_TRIGGER 1009 1010 %type raisetype {int} 1011 raisetype(A) ::= ROLLBACK. {A = OE_Rollback;} 1012 raisetype(A) ::= ABORT. {A = OE_Abort;} 1013 raisetype(A) ::= FAIL. {A = OE_Fail;} 1014 1015 1016 //////////////////////// DROP TRIGGER statement ////////////////////////////// 1017 %ifndef SQLITE_OMIT_TRIGGER 1018 cmd ::= DROP TRIGGER fullname(X). { 1019 sqlite3DropTrigger(pParse,X); 1020 } 1021 %endif // !SQLITE_OMIT_TRIGGER 1022 1023 //////////////////////// ATTACH DATABASE file AS name ///////////////////////// 1024 cmd ::= ATTACH database_kw_opt ids(F) AS nm(D) key_opt(K). { 1025 sqlite3Attach(pParse, &F, &D, K.type, &K.key); 1026 } 1027 %type key_opt {struct AttachKey} 1028 key_opt(A) ::= . { A.type = 0; } 1029 key_opt(A) ::= KEY ids(X). { A.type=1; A.key = X; } 1030 key_opt(A) ::= KEY BLOB(X). { A.type=2; A.key = X; } 1031 1032 database_kw_opt ::= DATABASE. 1033 database_kw_opt ::= . 1034 1035 //////////////////////// DETACH DATABASE name ///////////////////////////////// 1036 cmd ::= DETACH database_kw_opt nm(D). { 1037 sqlite3Detach(pParse, &D); 1038 } 1039 1040 ////////////////////////// REINDEX collation ////////////////////////////////// 1041 %ifndef SQLITE_OMIT_REINDEX 1042 cmd ::= REINDEX. {sqlite3Reindex(pParse, 0, 0);} 1043 cmd ::= REINDEX nm(X) dbnm(Y). {sqlite3Reindex(pParse, &X, &Y);} 1044 %endif 1045 1046 /////////////////////////////////// ANALYZE /////////////////////////////////// 1047 %ifndef SQLITE_OMIT_ANALYZE 1048 cmd ::= ANALYZE. {sqlite3Analyze(pParse, 0, 0);} 1049 cmd ::= ANALYZE nm(X) dbnm(Y). {sqlite3Analyze(pParse, &X, &Y);} 1050 %endif 1051 1052 //////////////////////// ALTER TABLE table ... //////////////////////////////// 1053 %ifndef SQLITE_OMIT_ALTERTABLE 1054 cmd ::= ALTER TABLE fullname(X) RENAME TO nm(Z). { 1055 sqlite3AlterRenameTable(pParse,X,&Z); 1056 } 1057 cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt column(Y). { 1058 sqlite3AlterFinishAddColumn(pParse, &Y); 1059 } 1060 add_column_fullname ::= fullname(X). { 1061 sqlite3AlterBeginAddColumn(pParse, X); 1062 } 1063 kwcolumn_opt ::= . 1064 kwcolumn_opt ::= COLUMNKW. 1065 %endif 1066