Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
| Comment: | Added support for CASE expressions - patches from Dan Kennedy. (CVS 437) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
836b59d057c3fb4087b138c9bfbc0339 |
| User & Date: | drh 2002-03-24 13:13:28 |
Context
|
2002-03-26
| ||
| 03:11 | Update the change log. (CVS 438) (check-in: 9637b9aa user: drh tags: trunk) | |
|
2002-03-24
| ||
| 13:13 | Added support for CASE expressions - patches from Dan Kennedy. (CVS 437) (check-in: 836b59d0 user: drh tags: trunk) | |
|
2002-03-23
| ||
| 01:00 | Version 2.4.3 (CVS 440) (check-in: 99d6764e user: drh tags: trunk) | |
Changes
Changes to VERSION.
1 |
2.4.3
|
| |
1 |
2.4.4
|
Changes to src/expr.c.
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
...
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
|
** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains routines used for analyzing expressions and ** for generating VDBE code that evaluates expressions in SQLite. ** ** $Id: expr.c,v 1.56 2002/03/13 18:54:07 drh Exp $ */ #include "sqliteInt.h" /* ** Construct a new expression node and return a pointer to it. Memory ** for this node is obtained from sqliteMalloc(). The calling function ................................................................................ sqliteVdbeResolveLabel(v, lbl); break; } case TK_AS: { sqliteExprCode(pParse, pExpr->pLeft); break; } } return; } /* ** Generate code for a boolean expression such that a jump is made ** to the label "dest" if the expression is true but execution ** continues straight thru if the expression is false. */ |
|
>
>
>
>
|
<
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
|
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
...
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
|
** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains routines used for analyzing expressions and ** for generating VDBE code that evaluates expressions in SQLite. ** ** $Id: expr.c,v 1.57 2002/03/24 13:13:29 drh Exp $ */ #include "sqliteInt.h" /* ** Construct a new expression node and return a pointer to it. Memory ** for this node is obtained from sqliteMalloc(). The calling function ................................................................................ sqliteVdbeResolveLabel(v, lbl); break; } case TK_AS: { sqliteExprCode(pParse, pExpr->pLeft); break; } case TK_CASE: { int expr_end_label; int next_when_label; int i; assert(pExpr->pList); assert((pExpr->pList->nExpr % 2) == 0); assert(pExpr->pList->nExpr > 0); expr_end_label = sqliteVdbeMakeLabel(pParse->pVdbe); if( pExpr->pLeft ){ sqliteExprCode(pParse, pExpr->pLeft); } for(i=0; i<pExpr->pList->nExpr; i=i+2){ if( i!=0 ){ sqliteVdbeResolveLabel(pParse->pVdbe, next_when_label); } next_when_label = sqliteVdbeMakeLabel(pParse->pVdbe); if( pExpr->pLeft ){ sqliteVdbeAddOp(pParse->pVdbe, OP_Dup, 0, 1); sqliteExprCode(pParse, pExpr->pList->a[i].pExpr); sqliteVdbeAddOp(pParse->pVdbe, OP_Ne, 0, next_when_label); }else{ sqliteExprIfFalse(pParse, pExpr->pList->a[i].pExpr, next_when_label); } if( pExpr->pLeft ){ sqliteVdbeAddOp(pParse->pVdbe, OP_Pop, 1, 0); } sqliteExprCode(pParse, pExpr->pList->a[i+1].pExpr); sqliteVdbeAddOp(pParse->pVdbe, OP_Goto, 0, expr_end_label); } sqliteVdbeResolveLabel(pParse->pVdbe, next_when_label); if( pExpr->pLeft ){ sqliteVdbeAddOp(pParse->pVdbe, OP_Pop, 1, 0); } if( pExpr->pRight ){ sqliteExprCode(pParse, pExpr->pRight); }else{ sqliteVdbeAddOp(pParse->pVdbe, OP_String, 0, 0); } sqliteVdbeResolveLabel(pParse->pVdbe, expr_end_label); } break; } } /* ** Generate code for a boolean expression such that a jump is made ** to the label "dest" if the expression is true but execution ** continues straight thru if the expression is false. */ |
Changes to src/parse.y.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
...
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
|
** ************************************************************************* ** This file contains SQLite's grammar for SQL. Process this file ** using the lemon parser generator to generate C code that runs ** the parser. Lemon will also generate a header file containing ** numeric codes for all of the tokens. ** ** @(#) $Id: parse.y,v 1.57 2002/03/13 18:54:08 drh Exp $ */ %token_prefix TK_ %token_type {Token} %default_type {Token} %extra_argument {Parse *pParse} %syntax_error { sqliteSetString(&pParse->zErrMsg,"syntax error",0); ................................................................................ expr(A) ::= expr(X) NOT IN LP select(Y) RP(E). { A = sqliteExpr(TK_IN, X, 0, 0); if( A ) A->pSelect = Y; A = sqliteExpr(TK_NOT, A, 0, 0); sqliteExprSpan(A,&X->span,&E); } %type exprlist {ExprList*} %destructor exprlist {sqliteExprListDelete($$);} %type expritem {Expr*} %destructor expritem {sqliteExprDelete($$);} exprlist(A) ::= exprlist(X) COMMA expritem(Y). |
|
>
>
>
>
>
|
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
|
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
...
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
|
** ************************************************************************* ** This file contains SQLite's grammar for SQL. Process this file ** using the lemon parser generator to generate C code that runs ** the parser. Lemon will also generate a header file containing ** numeric codes for all of the tokens. ** ** @(#) $Id: parse.y,v 1.58 2002/03/24 13:13:29 drh Exp $ */ %token_prefix TK_ %token_type {Token} %default_type {Token} %extra_argument {Parse *pParse} %syntax_error { sqliteSetString(&pParse->zErrMsg,"syntax error",0); ................................................................................ expr(A) ::= expr(X) NOT IN LP select(Y) RP(E). { A = sqliteExpr(TK_IN, X, 0, 0); if( A ) A->pSelect = Y; A = sqliteExpr(TK_NOT, A, 0, 0); sqliteExprSpan(A,&X->span,&E); } /* CASE expressions */ expr(A) ::= CASE(C) case_operand(X) case_exprlist(Y) case_else(Z) END(E). { A = sqliteExpr(TK_CASE, X, Z, 0); if( A ) A->pList = Y; sqliteExprSpan(A, &C, &E); } %type case_exprlist {ExprList*} %destructor case_exprlist {sqliteExprListDelete($$);} case_exprlist(A) ::= case_exprlist(X) WHEN expr(Y) THEN expr(Z). { A = sqliteExprListAppend(X, Y, 0); A = sqliteExprListAppend(A, Z, 0); } case_exprlist(A) ::= WHEN expr(Y) THEN expr(Z). { A = sqliteExprListAppend(0, Y, 0); A = sqliteExprListAppend(A, Z, 0); } %type case_else {Expr*} case_else(A) ::= ELSE expr(X). {A = X;} case_else(A) ::= . {A = 0;} %type case_operand {Expr*} case_operand(A) ::= expr(X). {A = X;} case_operand(A) ::= . {A = 0;} %type exprlist {ExprList*} %destructor exprlist {sqliteExprListDelete($$);} %type expritem {Expr*} %destructor expritem {sqliteExprDelete($$);} exprlist(A) ::= exprlist(X) COMMA expritem(Y). |
Changes to src/tokenize.c.
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 .. 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 .. 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 |
************************************************************************* ** An tokenizer for SQL ** ** This file contains C code that splits an SQL input string up into ** individual tokens and sends those tokens one-by-one over to the ** parser for analysis. ** ** $Id: tokenize.c,v 1.39 2002/03/13 18:54:08 drh Exp $ */ #include "sqliteInt.h" #include "os.h" #include <ctype.h> #include <stdlib.h> /* ................................................................................ { "ALL", 0, TK_ALL, 0 }, { "AND", 0, TK_AND, 0 }, { "AS", 0, TK_AS, 0 }, { "ASC", 0, TK_ASC, 0 }, { "BEGIN", 0, TK_BEGIN, 0 }, { "BETWEEN", 0, TK_BETWEEN, 0 }, { "BY", 0, TK_BY, 0 }, { "CHECK", 0, TK_CHECK, 0 }, { "CLUSTER", 0, TK_CLUSTER, 0 }, { "COMMIT", 0, TK_COMMIT, 0 }, { "CONFLICT", 0, TK_CONFLICT, 0 }, { "CONSTRAINT", 0, TK_CONSTRAINT, 0 }, { "COPY", 0, TK_COPY, 0 }, { "CREATE", 0, TK_CREATE, 0 }, ................................................................................ { "DEFAULT", 0, TK_DEFAULT, 0 }, { "DELETE", 0, TK_DELETE, 0 }, { "DELIMITERS", 0, TK_DELIMITERS, 0 }, { "DESC", 0, TK_DESC, 0 }, { "DISTINCT", 0, TK_DISTINCT, 0 }, { "DROP", 0, TK_DROP, 0 }, { "END", 0, TK_END, 0 }, { "EXCEPT", 0, TK_EXCEPT, 0 }, { "EXPLAIN", 0, TK_EXPLAIN, 0 }, { "FAIL", 0, TK_FAIL, 0 }, { "FROM", 0, TK_FROM, 0 }, { "GLOB", 0, TK_GLOB, 0 }, { "GROUP", 0, TK_GROUP, 0 }, { "HAVING", 0, TK_HAVING, 0 }, ................................................................................ { "REPLACE", 0, TK_REPLACE, 0 }, { "ROLLBACK", 0, TK_ROLLBACK, 0 }, { "SELECT", 0, TK_SELECT, 0 }, { "SET", 0, TK_SET, 0 }, { "TABLE", 0, TK_TABLE, 0 }, { "TEMP", 0, TK_TEMP, 0 }, { "TEMPORARY", 0, TK_TEMP, 0 }, { "TRANSACTION", 0, TK_TRANSACTION, 0 }, { "UNION", 0, TK_UNION, 0 }, { "UNIQUE", 0, TK_UNIQUE, 0 }, { "UPDATE", 0, TK_UPDATE, 0 }, { "USING", 0, TK_USING, 0 }, { "VACUUM", 0, TK_VACUUM, 0 }, { "VALUES", 0, TK_VALUES, 0 }, { "VIEW", 0, TK_VIEW, 0 }, { "WHERE", 0, TK_WHERE, 0 }, }; /* ** This is the hash table */ #define KEY_HASH_SIZE 71 |
| > > > > |
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 .. 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 .. 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 |
************************************************************************* ** An tokenizer for SQL ** ** This file contains C code that splits an SQL input string up into ** individual tokens and sends those tokens one-by-one over to the ** parser for analysis. ** ** $Id: tokenize.c,v 1.40 2002/03/24 13:13:29 drh Exp $ */ #include "sqliteInt.h" #include "os.h" #include <ctype.h> #include <stdlib.h> /* ................................................................................ { "ALL", 0, TK_ALL, 0 }, { "AND", 0, TK_AND, 0 }, { "AS", 0, TK_AS, 0 }, { "ASC", 0, TK_ASC, 0 }, { "BEGIN", 0, TK_BEGIN, 0 }, { "BETWEEN", 0, TK_BETWEEN, 0 }, { "BY", 0, TK_BY, 0 }, { "CASE", 0, TK_CASE, 0 }, { "CHECK", 0, TK_CHECK, 0 }, { "CLUSTER", 0, TK_CLUSTER, 0 }, { "COMMIT", 0, TK_COMMIT, 0 }, { "CONFLICT", 0, TK_CONFLICT, 0 }, { "CONSTRAINT", 0, TK_CONSTRAINT, 0 }, { "COPY", 0, TK_COPY, 0 }, { "CREATE", 0, TK_CREATE, 0 }, ................................................................................ { "DEFAULT", 0, TK_DEFAULT, 0 }, { "DELETE", 0, TK_DELETE, 0 }, { "DELIMITERS", 0, TK_DELIMITERS, 0 }, { "DESC", 0, TK_DESC, 0 }, { "DISTINCT", 0, TK_DISTINCT, 0 }, { "DROP", 0, TK_DROP, 0 }, { "END", 0, TK_END, 0 }, { "ELSE", 0, TK_ELSE, 0 }, { "EXCEPT", 0, TK_EXCEPT, 0 }, { "EXPLAIN", 0, TK_EXPLAIN, 0 }, { "FAIL", 0, TK_FAIL, 0 }, { "FROM", 0, TK_FROM, 0 }, { "GLOB", 0, TK_GLOB, 0 }, { "GROUP", 0, TK_GROUP, 0 }, { "HAVING", 0, TK_HAVING, 0 }, ................................................................................ { "REPLACE", 0, TK_REPLACE, 0 }, { "ROLLBACK", 0, TK_ROLLBACK, 0 }, { "SELECT", 0, TK_SELECT, 0 }, { "SET", 0, TK_SET, 0 }, { "TABLE", 0, TK_TABLE, 0 }, { "TEMP", 0, TK_TEMP, 0 }, { "TEMPORARY", 0, TK_TEMP, 0 }, { "THEN", 0, TK_THEN, 0 }, { "TRANSACTION", 0, TK_TRANSACTION, 0 }, { "UNION", 0, TK_UNION, 0 }, { "UNIQUE", 0, TK_UNIQUE, 0 }, { "UPDATE", 0, TK_UPDATE, 0 }, { "USING", 0, TK_USING, 0 }, { "VACUUM", 0, TK_VACUUM, 0 }, { "VALUES", 0, TK_VALUES, 0 }, { "VIEW", 0, TK_VIEW, 0 }, { "WHEN", 0, TK_WHEN, 0 }, { "WHERE", 0, TK_WHERE, 0 }, }; /* ** This is the hash table */ #define KEY_HASH_SIZE 71 |
Changes to test/expr.test.
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
...
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
# May you find forgiveness for yourself and forgive others. # May you share freely, never taking more than you give. # #*********************************************************************** # This file implements regression tests for SQLite library. The # focus of this file is testing expressions. # # $Id: expr.test,v 1.18 2002/01/15 18:39:45 drh Exp $ set testdir [file dirname $argv0] source $testdir/tester.tcl # Create a table to work with. # execsql {CREATE TABLE test1(i1 int, i2 int, r1 real, r2 real, t1 text, t2 text)} ................................................................................ test_expr expr-6.19 {t1='abc', t2='a[]b]c'} {t1 GLOB t2} 1 test_expr expr-6.20 {t1='abc', t2='a[^]b]c'} {t1 GLOB t2} 0 test_expr expr-6.21 {t1='abcdefg', t2='a*[de]g'} {t1 GLOB t2} 0 test_expr expr-6.22 {t1='abcdefg', t2='a*[^de]g'} {t1 GLOB t2} 1 test_expr expr-6.23 {t1='abcdefg', t2='a*?g'} {t1 GLOB t2} 1 test_expr expr-6.24 {t1='ac', t2='a*c'} {t1 GLOB t2} 1 test_expr expr-6.25 {t1='ac', t2='a*?c'} {t1 GLOB t2} 0 # These tests only work on versions of TCL that support Unicode # if {"\u1234"!="u1234" && [sqlite -encoding]=="UTF-8"} { test_expr expr-6.26 "t1='a\u0080c', t2='a?c'" {t1 GLOB t2} 1 test_expr expr-6.27 "t1='a\u07ffc', t2='a?c'" {t1 GLOB t2} 1 test_expr expr-6.28 "t1='a\u0800c', t2='a?c'" {t1 GLOB t2} 1 |
|
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
|
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
...
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
|
# May you find forgiveness for yourself and forgive others. # May you share freely, never taking more than you give. # #*********************************************************************** # This file implements regression tests for SQLite library. The # focus of this file is testing expressions. # # $Id: expr.test,v 1.19 2002/03/24 13:13:29 drh Exp $ set testdir [file dirname $argv0] source $testdir/tester.tcl # Create a table to work with. # execsql {CREATE TABLE test1(i1 int, i2 int, r1 real, r2 real, t1 text, t2 text)} ................................................................................ test_expr expr-6.19 {t1='abc', t2='a[]b]c'} {t1 GLOB t2} 1 test_expr expr-6.20 {t1='abc', t2='a[^]b]c'} {t1 GLOB t2} 0 test_expr expr-6.21 {t1='abcdefg', t2='a*[de]g'} {t1 GLOB t2} 0 test_expr expr-6.22 {t1='abcdefg', t2='a*[^de]g'} {t1 GLOB t2} 1 test_expr expr-6.23 {t1='abcdefg', t2='a*?g'} {t1 GLOB t2} 1 test_expr expr-6.24 {t1='ac', t2='a*c'} {t1 GLOB t2} 1 test_expr expr-6.25 {t1='ac', t2='a*?c'} {t1 GLOB t2} 0 test_expr expr-case.1 {i1=1, i2=2} \ {CASE WHEN i1 = i2 THEN 'eq' ELSE 'ne' END} ne test_expr expr-case.2 {i1=2, i2=2} \ {CASE WHEN i1 = i2 THEN 'eq' ELSE 'ne' END} eq test_expr expr-case.3 {i1=2} \ {CASE i1 WHEN 1 THEN 'one' WHEN 2 THEN 'two' ELSE 'error' END} two test_expr expr-case.4 {i1=3} \ {CASE i1 WHEN 1 THEN 'one' WHEN 2 THEN 'two' ELSE 'error' END} error test_expr expr-case.5 {i1=3} \ {CASE i1 WHEN 1 THEN 'one' WHEN 2 THEN 'two' END} {{}} test_expr expr-case.6 {i1=7} \ { CASE WHEN i1 < 5 THEN 'low' WHEN i1 < 10 THEN 'medium' WHEN i1 < 15 THEN 'high' ELSE 'error' END} medium # These tests only work on versions of TCL that support Unicode # if {"\u1234"!="u1234" && [sqlite -encoding]=="UTF-8"} { test_expr expr-6.26 "t1='a\u0080c', t2='a?c'" {t1 GLOB t2} 1 test_expr expr-6.27 "t1='a\u07ffc', t2='a?c'" {t1 GLOB t2} 1 test_expr expr-6.28 "t1='a\u0800c', t2='a?c'" {t1 GLOB t2} 1 |