Do not allow parameters in a DEFAULT clause of a CREATE TABLE statement.
Ticket [78c0c8c3c9f7c1]. FossilOrigin-Name: 1ad2bc1ed4c4ac81ac67a9660761f0eeb47c7fef
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drh
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18
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@ -1,5 +1,5 @@
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C Have\sthe\sclearCell()\sroutine\sreturn\sthe\scell\ssize\sto\sthe\scaller,\srather\nthan\shave\sthe\scaller\smake\sa\sseparate\scall\sto\scellSizePtr().
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D 2014-09-24T02:05:41.968
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C Do\snot\sallow\sparameters\sin\sa\sDEFAULT\sclause\sof\sa\sCREATE\sTABLE\sstatement.\nTicket\s[78c0c8c3c9f7c1].
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D 2014-09-24T13:20:22.559
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F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
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F Makefile.in cf57f673d77606ab0f2d9627ca52a9ba1464146a
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F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
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@ -175,13 +175,13 @@ F src/btmutex.c 49ca66250c7dfa844a4d4cb8272b87420d27d3a5
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F src/btree.c 183d62b37358f95d2ffac796f8491591a3456362
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F src/btree.h a79aa6a71e7f1055f01052b7f821bd1c2dce95c8
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F src/btreeInt.h 9db0d303b203d18871dc9a1d78a3e1ae4d62c1ef
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F src/build.c 8dbca25988045fbf2a33c9631c42706fa6449e60
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F src/build.c bde83dd5cf812e310a7e5ad2846790a14745bef4
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F src/callback.c 7b44ce59674338ad48b0e84e7b72f935ea4f68b0
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F src/complete.c 535183afb3c75628b78ce82612931ac7cdf26f14
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F src/ctime.c 16cd19215d9fd849ee2b7509b092f2e0bbd6a958
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F src/date.c 57a7f9ba9f6b4d5268f5e411739066a611f99036
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F src/delete.c fae81cc2eb14b75267d4f47d3cfc9ae02aae726f
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F src/expr.c 4f101c8ddc6d5a22303c88278069f5261562a9a8
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F src/expr.c f32119248996680aa73c5c37bfdd42820804dc17
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F src/fault.c 160a0c015b6c2629d3899ed2daf63d75754a32bb
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F src/fkey.c da985ae673efef2c712caef825a5d2edb087ead7
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F src/func.c 1629ccdd8ef3f19d7accc9d9287190489469ff81
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@ -232,7 +232,7 @@ F src/shell.c dad23987c34faddb061a339da3e92e05ccc6935e
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F src/sqlite.h.in 8b018219ce988913e5977d5de9ab4beb33be23b6
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F src/sqlite3.rc 992c9f5fb8285ae285d6be28240a7e8d3a7f2bad
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F src/sqlite3ext.h 17d487c3c91b0b8c584a32fbeb393f6f795eea7d
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F src/sqliteInt.h 5ecde2191721a94cdce0d5248e26a373e0b17a70
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F src/sqliteInt.h ca777ba045b1849d36a44dee1c71c652ae915093
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F src/sqliteLimit.h 164b0e6749d31e0daa1a4589a169d31c0dec7b3d
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F src/status.c 7ac05a5c7017d0b9f0b4bcd701228b784f987158
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F src/table.c 2e99ef7ef16187e17033d9398dc962ce22dab5cb
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@ -438,7 +438,7 @@ F test/ctime.test 7bd009071e242aac4f18521581536b652b789a47
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F test/date.test 42973251b9429f2c41b77eb98a7b0b0ba2d3b2c0
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F test/dbstatus.test 8de104bb5606f19537d23cd553b41349b5ab1204
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F test/dbstatus2.test 10418e62b3db5dca070f0c3eef3ea13946f339c2
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F test/default.test 792c3c70836f1901e2a8cb34fa0880ed71e2c1a9
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F test/default.test 0cb49b1c315a0d81c81d775e407f66906a2a604d
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F test/delete.test a065b05d2ebf60fd16639c579a4adfb7c381c701
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F test/delete2.test 3a03f2cca1f9a67ec469915cb8babd6485db43fa
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F test/delete3.test 555e84a00a99230b7d049d477a324a631126a6ab
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@ -1200,7 +1200,7 @@ F tool/vdbe_profile.tcl 67746953071a9f8f2f668b73fe899074e2c6d8c1
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F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
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F tool/warnings.sh 0abfd78ceb09b7f7c27c688c8e3fe93268a13b32
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F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
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P 5dd41cdbfebdd088ebd9a90a394ee296c207ad90
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R c3c34442c09fda273806b002932cda25
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P f21d217583c205dc17f98bb4877fd4ed98cefcb1
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R 0c35c4c692384a20d9dc945800977dcf
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U drh
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Z 4d0ec3d41d82b7fff44b33f0ea314f2b
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Z ea463bda0fe2fcb1086a67d4498e377c
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@ -1 +1 @@
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f21d217583c205dc17f98bb4877fd4ed98cefcb1
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1ad2bc1ed4c4ac81ac67a9660761f0eeb47c7fef
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@ -1236,7 +1236,7 @@ void sqlite3AddDefaultValue(Parse *pParse, ExprSpan *pSpan){
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p = pParse->pNewTable;
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if( p!=0 ){
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pCol = &(p->aCol[p->nCol-1]);
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if( !sqlite3ExprIsConstantOrFunction(pSpan->pExpr) ){
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if( !sqlite3ExprIsConstantOrFunction(pSpan->pExpr, db->init.busy) ){
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sqlite3ErrorMsg(pParse, "default value of column [%s] is not constant",
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pCol->zName);
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}else{
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44
src/expr.c
44
src/expr.c
@ -1212,32 +1212,40 @@ void sqlite3ExprListDelete(sqlite3 *db, ExprList *pList){
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/*
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** These routines are Walker callbacks. Walker.u.pi is a pointer
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** to an integer. These routines are checking an expression to see
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** if it is a constant. Set *Walker.u.pi to 0 if the expression is
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** if it is a constant. Set *Walker.u.i to 0 if the expression is
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** not constant.
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**
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** These callback routines are used to implement the following:
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**
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** sqlite3ExprIsConstant()
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** sqlite3ExprIsConstantNotJoin()
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** sqlite3ExprIsConstantOrFunction()
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** sqlite3ExprIsConstant() pWalker->u.i==1
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** sqlite3ExprIsConstantNotJoin() pWalker->u.i==2
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** sqlite3ExprIsConstantOrFunction() pWalker->u.i==3 or 4
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**
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** The sqlite3ExprIsConstantOrFunction() is used for evaluating expressions
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** in a CREATE TABLE statement. The Walker.u.i value is 4 when parsing
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** an existing schema and 3 when processing a new statement. A bound
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** parameter raises an error for new statements, but is silently converted
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** to NULL for existing schemas. This allows sqlite_master tables that
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** contain a bound parameter because they were generated by older versions
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** of SQLite to be parsed by newer versions of SQLite without raising a
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** malformed schema error.
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*/
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static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){
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/* If pWalker->u.i is 3 then any term of the expression that comes from
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/* If pWalker->u.i is 2 then any term of the expression that comes from
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** the ON or USING clauses of a join disqualifies the expression
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** from being considered constant. */
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if( pWalker->u.i==3 && ExprHasProperty(pExpr, EP_FromJoin) ){
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if( pWalker->u.i==2 && ExprHasProperty(pExpr, EP_FromJoin) ){
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pWalker->u.i = 0;
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return WRC_Abort;
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}
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switch( pExpr->op ){
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/* Consider functions to be constant if all their arguments are constant
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** and either pWalker->u.i==2 or the function as the SQLITE_FUNC_CONST
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** and either pWalker->u.i==3 or 4 or the function as the SQLITE_FUNC_CONST
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** flag. */
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case TK_FUNCTION:
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if( pWalker->u.i==2 || ExprHasProperty(pExpr,EP_Constant) ){
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if( pWalker->u.i>=3 || ExprHasProperty(pExpr,EP_Constant) ){
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return WRC_Continue;
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}
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/* Fall through */
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@ -1251,6 +1259,19 @@ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){
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testcase( pExpr->op==TK_AGG_COLUMN );
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pWalker->u.i = 0;
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return WRC_Abort;
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case TK_VARIABLE:
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if( pWalker->u.i==4 ){
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/* Silently convert bound parameters that appear inside of CREATE
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** statements into a NULL when parsing the CREATE statement text out
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** of the sqlite_master table */
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pExpr->op = TK_NULL;
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}else if( pWalker->u.i==3 ){
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/* A bound parameter in a CREATE statement that originates from
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** sqlite3_prepare() causes an error */
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pWalker->u.i = 0;
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return WRC_Abort;
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}
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/* Fall through */
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default:
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testcase( pExpr->op==TK_SELECT ); /* selectNodeIsConstant will disallow */
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testcase( pExpr->op==TK_EXISTS ); /* selectNodeIsConstant will disallow */
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@ -1291,7 +1312,7 @@ int sqlite3ExprIsConstant(Expr *p){
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** an ON or USING clause.
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*/
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int sqlite3ExprIsConstantNotJoin(Expr *p){
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return exprIsConst(p, 3);
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return exprIsConst(p, 2);
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}
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/*
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@ -1303,8 +1324,9 @@ int sqlite3ExprIsConstantNotJoin(Expr *p){
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** is considered a variable but a single-quoted string (ex: 'abc') is
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** a constant.
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*/
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int sqlite3ExprIsConstantOrFunction(Expr *p){
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return exprIsConst(p, 2);
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int sqlite3ExprIsConstantOrFunction(Expr *p, u8 isInit){
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assert( isInit==0 || isInit==1 );
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return exprIsConst(p, 3+isInit);
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}
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/*
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@ -3285,7 +3285,7 @@ void sqlite3CloseSavepoints(sqlite3 *);
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void sqlite3LeaveMutexAndCloseZombie(sqlite3*);
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int sqlite3ExprIsConstant(Expr*);
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int sqlite3ExprIsConstantNotJoin(Expr*);
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int sqlite3ExprIsConstantOrFunction(Expr*);
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int sqlite3ExprIsConstantOrFunction(Expr*, u8);
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int sqlite3ExprIsInteger(Expr*, int*);
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int sqlite3ExprCanBeNull(const Expr*);
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int sqlite3ExprNeedsNoAffinityChange(const Expr*, char);
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@ -99,4 +99,32 @@ do_execsql_test default-3.3 {
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SELECT * FROM t300;
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} {2147483647 2147483648 9223372036854775807 -2147483647 -2147483648 -9223372036854775808 9.22337203685478e+18 9223372036854775807}
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# Do now allow bound parameters in new DEFAULT values.
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# Silently convert bound parameters to NULL in DEFAULT causes
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# in the sqlite_master table, for backwards compatibility.
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#
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db close
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forcedelete test.db
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sqlite3 db test.db
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do_execsql_test default-4.0 {
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CREATE TABLE t1(a TEXT, b TEXT DEFAULT(99));
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PRAGMA writable_schema=ON;
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UPDATE sqlite_master SET sql='CREATE TABLE t1(a TEXT, b TEXT DEFAULT(:xyz))';
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} {}
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db close
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sqlite3 db test.db
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do_execsql_test default-4.1 {
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INSERT INTO t1(a) VALUES('xyzzy');
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SELECT a, quote(b) FROM t1;
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} {xyzzy NULL}
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do_catchsql_test default-4.2 {
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CREATE TABLE t2(a TEXT, b TEXT DEFAULT(:xyz));
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} {1 {default value of column [b] is not constant}}
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do_catchsql_test default-4.3 {
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CREATE TABLE t2(a TEXT, b TEXT DEFAULT(abs(:xyz)));
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} {1 {default value of column [b] is not constant}}
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do_catchsql_test default-4.4 {
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CREATE TABLE t2(a TEXT, b TEXT DEFAULT(98+coalesce(5,:xyz)));
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} {1 {default value of column [b] is not constant}}
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finish_test
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