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Overview
| Comment: | Get the "DEFAULT true" and "DEFAULT false" phrases working correctly in CREATE TABLE. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | is-true-operator |
| Files: | files | file ages | folders |
| SHA3-256: | 8002f87d96b3f885cd208e7d204907a3 |
| User & Date: | drh 2018-02-26 20:15:54 |
Context
|
2018-02-26
| ||
| 21:26 | Code simplifications. New test cases. check-in: 57508518 user: drh tags: is-true-operator | |
| 20:15 | Get the "DEFAULT true" and "DEFAULT false" phrases working correctly in CREATE TABLE. check-in: 8002f87d user: drh tags: is-true-operator | |
| 19:03 | Enhance TreeView so that it can display the new IS TRUE expression trees. check-in: 7e38305e user: drh tags: is-true-operator | |
Changes
Changes to src/expr.c.
1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 .... 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 .... 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 |
** to enforce this constraint.
*/
static int dupedExprStructSize(Expr *p, int flags){
int nSize;
assert( flags==EXPRDUP_REDUCE || flags==0 ); /* Only one flag value allowed */
assert( EXPR_FULLSIZE<=0xfff );
assert( (0xfff & (EP_Reduced|EP_TokenOnly))==0 );
if( 0==flags || p->op==TK_SELECT_COLUMN ){
nSize = EXPR_FULLSIZE;
}else{
assert( !ExprHasProperty(p, EP_TokenOnly|EP_Reduced) );
assert( !ExprHasProperty(p, EP_FromJoin) );
assert( !ExprHasProperty(p, EP_MemToken) );
assert( !ExprHasProperty(p, EP_NoReduce) );
if( p->pLeft || p->x.pList ){
................................................................................
** This callback is used by multiple expression walkers.
*/
int sqlite3SelectWalkFail(Walker *pWalker, Select *NotUsed){
UNUSED_PARAMETER(NotUsed);
pWalker->eCode = 0;
return WRC_Abort;
}
/*
** These routines are Walker callbacks used to check expressions to
** see if they are "constant" for some definition of constant. The
** Walker.eCode value determines the type of "constant" we are looking
** for.
**
................................................................................
if( pWalker->eCode>=4 || ExprHasProperty(pExpr,EP_ConstFunc) ){
return WRC_Continue;
}else{
pWalker->eCode = 0;
return WRC_Abort;
}
case TK_ID:
case TK_COLUMN:
case TK_AGG_FUNCTION:
case TK_AGG_COLUMN:
testcase( pExpr->op==TK_ID );
testcase( pExpr->op==TK_COLUMN );
testcase( pExpr->op==TK_AGG_FUNCTION );
testcase( pExpr->op==TK_AGG_COLUMN );
|
| > > > > > > > > > > > > > > > > > > > > > > > > > > |
1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 .... 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 .... 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 |
** to enforce this constraint.
*/
static int dupedExprStructSize(Expr *p, int flags){
int nSize;
assert( flags==EXPRDUP_REDUCE || flags==0 ); /* Only one flag value allowed */
assert( EXPR_FULLSIZE<=0xfff );
assert( (0xfff & (EP_Reduced|EP_TokenOnly))==0 );
if( 0==flags || p->op==TK_SELECT_COLUMN || p->op==TK_TRUEFALSE ){
nSize = EXPR_FULLSIZE;
}else{
assert( !ExprHasProperty(p, EP_TokenOnly|EP_Reduced) );
assert( !ExprHasProperty(p, EP_FromJoin) );
assert( !ExprHasProperty(p, EP_MemToken) );
assert( !ExprHasProperty(p, EP_NoReduce) );
if( p->pLeft || p->x.pList ){
................................................................................
** This callback is used by multiple expression walkers.
*/
int sqlite3SelectWalkFail(Walker *pWalker, Select *NotUsed){
UNUSED_PARAMETER(NotUsed);
pWalker->eCode = 0;
return WRC_Abort;
}
/*
** If the input expression is an ID with the name "true" or "false"
** then convert it into an appropriate TK_TRUEFALSE term. Return true
** if a conversion occurred, and false if the expression is unaltered.
*/
int sqlite3ExprIdToTrueFalse(Expr *pExpr){
assert( pExpr->op==TK_ID || pExpr->op==TK_STRING );
if( sqlite3StrICmp(pExpr->u.zToken, "true")==0
|| sqlite3StrICmp(pExpr->u.zToken, "false")==0
){
pExpr->op = TK_TRUEFALSE;
pExpr->iTable = pExpr->u.zToken[4]==0;
pExpr->pTab = 0;
ExprSetProperty(pExpr, EP_NoReduce);
return 1;
}
return 0;
}
/*
** These routines are Walker callbacks used to check expressions to
** see if they are "constant" for some definition of constant. The
** Walker.eCode value determines the type of "constant" we are looking
** for.
**
................................................................................
if( pWalker->eCode>=4 || ExprHasProperty(pExpr,EP_ConstFunc) ){
return WRC_Continue;
}else{
pWalker->eCode = 0;
return WRC_Abort;
}
case TK_ID:
/* Convert "true" or "false" in a DEFAULT clause into the
** appropriate TK_TRUEFALSE operator */
if( pWalker->eCode>=4 && sqlite3ExprIdToTrueFalse(pExpr) ){
return WRC_Prune;
}
/* Fall thru */
case TK_COLUMN:
case TK_AGG_FUNCTION:
case TK_AGG_COLUMN:
testcase( pExpr->op==TK_ID );
testcase( pExpr->op==TK_COLUMN );
testcase( pExpr->op==TK_AGG_FUNCTION );
testcase( pExpr->op==TK_AGG_COLUMN );
|
Changes to src/parse.y.
309 310 311 312 313 314 315 316 317 318 319 320 321 322 |
{sqlite3AddDefaultValue(pParse,X,A.z,Z);}
ccons ::= DEFAULT MINUS(A) term(X) scanpt(Z). {
Expr *p = sqlite3PExpr(pParse, TK_UMINUS, X, 0);
sqlite3AddDefaultValue(pParse,p,A.z,Z);
}
ccons ::= DEFAULT scanpt id(X). {
Expr *p = tokenExpr(pParse, TK_STRING, X);
sqlite3AddDefaultValue(pParse,p,X.z,X.z+X.n);
}
// In addition to the type name, we also care about the primary key and
// UNIQUE constraints.
//
ccons ::= NULL onconf.
|
> > |
309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 |
{sqlite3AddDefaultValue(pParse,X,A.z,Z);}
ccons ::= DEFAULT MINUS(A) term(X) scanpt(Z). {
Expr *p = sqlite3PExpr(pParse, TK_UMINUS, X, 0);
sqlite3AddDefaultValue(pParse,p,A.z,Z);
}
ccons ::= DEFAULT scanpt id(X). {
Expr *p = tokenExpr(pParse, TK_STRING, X);
sqlite3ExprIdToTrueFalse(p);
testcase( p->op==TK_TRUEFALSE && p->iTable==0 );
sqlite3AddDefaultValue(pParse,p,X.z,X.z+X.n);
}
// In addition to the type name, we also care about the primary key and
// UNIQUE constraints.
//
ccons ::= NULL onconf.
|
Changes to src/resolve.c.
428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 |
** case, we need to return right away and not make any changes to
** pExpr.
**
** Because no reference was made to outer contexts, the pNC->nRef
** fields are not changed in any context.
*/
if( cnt==0 && zTab==0 ){
if( ExprHasProperty(pExpr,EP_DblQuoted) ){
pExpr->op = TK_STRING;
pExpr->pTab = 0;
return WRC_Prune;
}
if( sqlite3StrICmp(zCol, "true")==0 || sqlite3StrICmp(zCol, "false")==0 ){
pExpr->op = TK_TRUEFALSE;
pExpr->iTable = zCol[4]==0;
pExpr->pTab = 0;
return WRC_Prune;
}
}
/*
** cnt==0 means there was not match. cnt>1 means there were two or
** more matches. Either way, we have an error.
|
> | < < < |
428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 |
** case, we need to return right away and not make any changes to
** pExpr.
**
** Because no reference was made to outer contexts, the pNC->nRef
** fields are not changed in any context.
*/
if( cnt==0 && zTab==0 ){
assert( pExpr->op==TK_ID );
if( ExprHasProperty(pExpr,EP_DblQuoted) ){
pExpr->op = TK_STRING;
pExpr->pTab = 0;
return WRC_Prune;
}
if( sqlite3ExprIdToTrueFalse(pExpr) ){
return WRC_Prune;
}
}
/*
** cnt==0 means there was not match. cnt>1 means there were two or
** more matches. Either way, we have an error.
|
Changes to src/sqliteInt.h.
3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 |
void sqlite3CodeVerifySchema(Parse*, int); void sqlite3CodeVerifyNamedSchema(Parse*, const char *zDb); void sqlite3BeginTransaction(Parse*, int); void sqlite3EndTransaction(Parse*,int); void sqlite3Savepoint(Parse*, int, Token*); void sqlite3CloseSavepoints(sqlite3 *); void sqlite3LeaveMutexAndCloseZombie(sqlite3*); int sqlite3ExprIsConstant(Expr*); int sqlite3ExprIsConstantNotJoin(Expr*); int sqlite3ExprIsConstantOrFunction(Expr*, u8); int sqlite3ExprIsConstantOrGroupBy(Parse*, Expr*, ExprList*); int sqlite3ExprIsTableConstant(Expr*,int); #ifdef SQLITE_ENABLE_CURSOR_HINTS int sqlite3ExprContainsSubquery(Expr*); |
> |
3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 |
void sqlite3CodeVerifySchema(Parse*, int);
void sqlite3CodeVerifyNamedSchema(Parse*, const char *zDb);
void sqlite3BeginTransaction(Parse*, int);
void sqlite3EndTransaction(Parse*,int);
void sqlite3Savepoint(Parse*, int, Token*);
void sqlite3CloseSavepoints(sqlite3 *);
void sqlite3LeaveMutexAndCloseZombie(sqlite3*);
int sqlite3ExprIdToTrueFalse(Expr*);
int sqlite3ExprIsConstant(Expr*);
int sqlite3ExprIsConstantNotJoin(Expr*);
int sqlite3ExprIsConstantOrFunction(Expr*, u8);
int sqlite3ExprIsConstantOrGroupBy(Parse*, Expr*, ExprList*);
int sqlite3ExprIsTableConstant(Expr*,int);
#ifdef SQLITE_ENABLE_CURSOR_HINTS
int sqlite3ExprContainsSubquery(Expr*);
|
Changes to test/istrue.test.
73 74 75 76 77 78 79 80 81 |
do_execsql_test istrue-400 {
SELECT x FROM t1 WHERE true;
} {1 2 3}
do_execsql_test istrue-410 {
SELECT x FROM t1 WHERE false;
} {}
finish_test
|
> > > > > > > > > > > |
73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 |
do_execsql_test istrue-400 {
SELECT x FROM t1 WHERE true;
} {1 2 3}
do_execsql_test istrue-410 {
SELECT x FROM t1 WHERE false;
} {}
do_execsql_test istrue-500 {
CREATE TABLE t2(
a INTEGER PRIMARY KEY,
b BOOLEAN DEFAULT true,
c BOOLEAN DEFAULT(true),
d BOOLEAN DEFAULT false,
e BOOLEAN DEFAULT(false)
);
INSERT INTO t2 DEFAULT VALUES;
SELECT * FROM t2;
} {1 1 1 0 0}
finish_test
|