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Overview
Comment: | Modify ATTACH and DETACH to execute at runtime instead of compile time. (CVS 2803) |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
5e04ec694add7a8331e3d6fbdfcaed51 |
User & Date: | danielk1977 2005-12-06 17:19:11.000 |
Context
2005-12-06
| ||
17:48 | Allow VACUUM to detach the auxillary database after malloc() fails. (CVS 2804) (check-in: 6824a78bc7 user: danielk1977 tags: trunk) | |
17:19 | Modify ATTACH and DETACH to execute at runtime instead of compile time. (CVS 2803) (check-in: 5e04ec694a user: danielk1977 tags: trunk) | |
13:19 | Report errors out of sqlite3_open16(). (CVS 2802) (check-in: f5b58163d4 user: drh tags: trunk) | |
Changes
Changes to src/attach.c.
1 2 3 4 5 6 7 8 9 10 11 12 13 | /* ** 2003 April 6 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains code used to implement the ATTACH and DETACH commands. ** | | > > > > | | > > > > > > > > > > > > > > > > > > > > > | > | > > > > > > > > | | < < | < > > > > > > < | | < < | < | | > > > > | < > > | | < | < | < < < < < < | < < < < < < < < < < | < | > > > | | | < > > < < | < < < < | | | | > > | | | | < | > | < | | | | > > > | < | > > > > > > > | < > | > | | | | < | > | > > > | > > | > | > | < > > | | | > > > | | < < < < < < < | > | | | | < | < | < < < | < > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 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 | /* ** 2003 April 6 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains code used to implement the ATTACH and DETACH commands. ** ** $Id: attach.c,v 1.36 2005/12/06 17:19:11 danielk1977 Exp $ */ #include "sqliteInt.h" /* ** Resolve an expression that was part of an ATTACH or DETACH statement. This ** is slightly different from resolving a normal SQL expression, because simple ** identifiers are treated as strings, not possible column names or aliases. ** ** i.e. if the parser sees: ** ** ATTACH DATABASE abc AS def ** ** it treats the two expressions as literal strings 'abc' and 'def' instead of ** looking for columns of the same name. ** ** This only applies to the root node of pExpr, so the statement: ** ** ATTACH DATABASE abc||def AS 'db2' ** ** will fail because neither abc or def can be resolved. */ int resolveAttachExpr(NameContext *pName, Expr *pExpr) { int rc = SQLITE_OK; if( pExpr ){ if( pExpr->op!=TK_ID ){ rc = sqlite3ExprResolveNames(pName, pExpr); }else{ pExpr->op = TK_STRING; } } return rc; } /* ** An SQL user-function registered to do the work of an ATTACH statement. The ** three arguments to the function come directly from an attach statement: ** ** ATTACH DATABASE x AS y KEY z ** ** SELECT sqlite_attach(x, y, z) ** ** If the optional "KEY z" syntax is omitted, an SQL NULL is passed as the ** third argument. */ static void attachFunc( sqlite3_context *context, int argc, sqlite3_value **argv ){ int i; int rc = 0; sqlite3 *db = sqlite3_user_data(context); const char *zName; const char *zFile; Db *aNew; char zErr[128]; char *zErrDyn = 0; zFile = (const char *)sqlite3_value_text(argv[0]); zName = (const char *)sqlite3_value_text(argv[1]); /* Check for the following errors: ** ** * Too many attached databases, ** * Transaction currently open ** * Specified database name already being used. */ if( db->nDb>=MAX_ATTACHED+2 ){ sqlite3_snprintf( 127, zErr, "too many attached databases - max %d", MAX_ATTACHED ); goto attach_error; } if( !db->autoCommit ){ strcpy(zErr, "cannot ATTACH database within transaction"); goto attach_error; } for(i=0; i<db->nDb; i++){ char *z = db->aDb[i].zName; if( z && sqlite3StrICmp(z, zName)==0 ){ sqlite3_snprintf(127, zErr, "database %s is already in use", zName); goto attach_error; } } /* Allocate the new entry in the db->aDb[] array and initialise the schema ** hash tables. */ if( db->aDb==db->aDbStatic ){ aNew = sqliteMalloc( sizeof(db->aDb[0])*3 ); if( aNew==0 ){ return; } memcpy(aNew, db->aDb, sizeof(db->aDb[0])*2); }else{ aNew = sqliteRealloc(db->aDb, sizeof(db->aDb[0])*(db->nDb+1) ); if( aNew==0 ){ return; } } db->aDb = aNew; aNew = &db->aDb[db->nDb++]; memset(aNew, 0, sizeof(*aNew)); sqlite3HashInit(&aNew->tblHash, SQLITE_HASH_STRING, 0); sqlite3HashInit(&aNew->idxHash, SQLITE_HASH_STRING, 0); sqlite3HashInit(&aNew->trigHash, SQLITE_HASH_STRING, 0); sqlite3HashInit(&aNew->aFKey, SQLITE_HASH_STRING, 1); aNew->zName = sqliteStrDup(zName); aNew->safety_level = 3; /* Open the database file */ rc = sqlite3BtreeFactory(db, zFile, 0, MAX_PAGES, &aNew->pBt); #if SQLITE_HAS_CODEC { extern int sqlite3CodecAttach(sqlite3*, int, void*, int); extern void sqlite3CodecGetKey(sqlite3*, int, void**, int*); int t = sqlite3_value_type(argv[2]); switch( t ){ case SQLITE_INTEGER: case SQLITE_FLOAT: zErrDyn = sqliteStrDup("Invalid key value"); rc = SQLITE_ERROR; break; case SQLITE_TEXT: case SQLITE_BLOB: nKey = sqlite3_value_bytes(argv[2]); zKey = (char *)sqlite3_value_blob(argv[2]); sqlite3CodecAttach(db, db->nDb-1, zKey, nKey); break; case SQLITE_NULL: /* No key specified. Use the key from the main database */ sqlite3CodecGetKey(db, 0, (void**)&zKey, &nKey); sqlite3CodecAttach(db, db->nDb-1, zKey, nKey); break; } } #endif /* If the file was opened successfully, read the schema for the new database. ** If this fails, or if opening the file failed, then close the file and ** remove the entry from the db->aDb[] array. i.e. put everything back the way ** we found it. */ if( rc==SQLITE_OK ){ db->flags &= ~SQLITE_Initialized; sqlite3SafetyOn(db); rc = sqlite3Init(db, &zErrDyn); sqlite3SafetyOff(db); } if( rc ){ int i = db->nDb - 1; assert( i>=2 ); if( db->aDb[i].pBt ){ sqlite3BtreeClose(db->aDb[i].pBt); db->aDb[i].pBt = 0; } sqlite3ResetInternalSchema(db, 0); db->nDb = i; sqlite3_snprintf(127, zErr, "unable to open database: %s", zFile); goto attach_error; } return; attach_error: /* Return an error if we get here */ if( zErrDyn ){ sqlite3_result_error(context, zErrDyn, -1); sqliteFree(zErrDyn); }else{ zErr[sizeof(zErr)-1] = 0; sqlite3_result_error(context, zErr, -1); } } /* ** An SQL user-function registered to do the work of an DETACH statement. The ** three arguments to the function come directly from a detach statement: ** ** DETACH DATABASE x ** ** SELECT sqlite_detach(x) */ static void detachFunc( sqlite3_context *context, int argc, sqlite3_value **argv ){ const char *zName = (const char *)sqlite3_value_text(argv[0]); sqlite3 *db = sqlite3_user_data(context); int i; Db *pDb = 0; char zErr[128]; assert(zName); for(i=0; i<db->nDb; i++){ pDb = &db->aDb[i]; if( pDb->pBt==0 ) continue; if( sqlite3StrICmp(pDb->zName, zName)==0 ) break; } if( i>=db->nDb ){ sqlite3_snprintf(sizeof(zErr), zErr, "no such database: %s", zName); goto detach_error; } if( i<2 ){ sqlite3_snprintf(sizeof(zErr), zErr, "cannot detach database %s", zName); goto detach_error; } if( !db->autoCommit ){ strcpy(zErr, "cannot DETACH database within transaction"); goto detach_error; } sqlite3BtreeClose(pDb->pBt); pDb->pBt = 0; sqlite3ResetInternalSchema(db, 0); return; detach_error: sqlite3_result_error(context, zErr, -1); } /* ** This procedure generates VDBE code for a single invocation of either the ** sqlite_detach() or sqlite_attach() SQL user functions. */ static void codeAttach( Parse *pParse, /* The parser context */ int type, /* Either SQLITE_ATTACH or SQLITE_DETACH */ const char *zFunc, /* Either "sqlite_attach" or "sqlite_detach */ int nFunc, /* Number of args to pass to zFunc */ Expr *pAuthArg, /* Expression to pass to authorization callback */ Expr *pFilename, /* Name of database file */ Expr *pDbname, /* Name of the database to use internally */ Expr *pKey /* Database key for encryption extension */ ){ int rc; NameContext sName; Vdbe *v; FuncDef *pFunc; sqlite3* db = pParse->db; #ifndef SQLITE_OMIT_AUTHORIZATION char *zAuthArg = sqlite3NameFromToken(&pAuthArg->span); if( !zAuthArg ){ goto attach_end; } if( sqlite3AuthCheck(pParse, type, zAuthArg, 0, 0)!=SQLITE_OK ){ goto attach_end; } #endif /* SQLITE_OMIT_AUTHORIZATION */ memset(&sName, 0, sizeof(NameContext)); sName.pParse = pParse; if( SQLITE_OK!=(rc = resolveAttachExpr(&sName, pFilename)) || SQLITE_OK!=(rc = resolveAttachExpr(&sName, pDbname)) || SQLITE_OK!=(rc = resolveAttachExpr(&sName, pKey)) ){ pParse->nErr++; goto attach_end; } v = sqlite3GetVdbe(pParse); sqlite3ExprCode(pParse, pFilename); sqlite3ExprCode(pParse, pDbname); sqlite3ExprCode(pParse, pKey); assert(v || sqlite3Tsd()->mallocFailed); if( v ){ sqlite3VdbeAddOp(v, OP_Function, 0, nFunc); pFunc = sqlite3FindFunction(db, zFunc, strlen(zFunc), nFunc, SQLITE_UTF8,0); sqlite3VdbeChangeP3(v, -1, (char *)pFunc, P3_FUNCDEF); /* Code an OP_Expire. For an ATTACH statement, set P1 to true (expire this ** statement only). For DETACH, set it to false (expire all existing ** statements). */ sqlite3VdbeAddOp(v, OP_Expire, (type==SQLITE_ATTACH), 0); } attach_end: sqlite3ExprDelete(pFilename); sqlite3ExprDelete(pDbname); sqlite3ExprDelete(pKey); sqliteFree(zAuthArg); } /* ** Called by the parser to compile a DETACH statement. ** ** DETACH pDbname */ void sqlite3Detach(Parse *pParse, Expr *pDbname){ codeAttach(pParse, SQLITE_DETACH, "sqlite_detach", 1, pDbname, 0, 0, pDbname); } /* ** Called by the parser to compile an ATTACH statement. ** ** ATTACH p AS pDbname KEY pKey */ void sqlite3Attach(Parse *pParse, Expr *p, Expr *pDbname, Expr *pKey){ codeAttach(pParse, SQLITE_ATTACH, "sqlite_attach", 3, p, p, pDbname, pKey); } void sqlite3AttachFunctions(sqlite3 *db) { static const int enc = SQLITE_UTF8; sqlite3_create_function(db, "sqlite_attach", 3, enc, db, attachFunc, 0, 0); sqlite3_create_function(db, "sqlite_detach", 1, enc, db, detachFunc, 0, 0); } /* ** Initialize a DbFixer structure. This routine must be called prior ** to passing the structure to one of the sqliteFixAAAA() routines below. ** ** The return value indicates whether or not fixation is required. TRUE |
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Changes to src/func.c.
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12 13 14 15 16 17 18 | ** This file contains the C functions that implement various SQL ** functions of SQLite. ** ** There is only one exported symbol in this file - the function ** sqliteRegisterBuildinFunctions() found at the bottom of the file. ** All other code has file scope. ** | | | 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | ** This file contains the C functions that implement various SQL ** functions of SQLite. ** ** There is only one exported symbol in this file - the function ** sqliteRegisterBuildinFunctions() found at the bottom of the file. ** All other code has file scope. ** ** $Id: func.c,v 1.112 2005/12/06 17:19:11 danielk1977 Exp $ */ #include "sqliteInt.h" #include <ctype.h> /* #include <math.h> */ #include <stdlib.h> #include <assert.h> #include "vdbeInt.h" |
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1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 | pFunc->needCollSeq = 1; } } } #ifndef SQLITE_OMIT_ALTERTABLE sqlite3AlterFunctions(db); #endif for(i=0; i<sizeof(aAggs)/sizeof(aAggs[0]); i++){ void *pArg = 0; switch( aAggs[i].argType ){ case 1: pArg = db; break; case 2: pArg = (void *)(-1); break; } sqlite3_create_function(db, aAggs[i].zName, aAggs[i].nArg, SQLITE_UTF8, | > | 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 | pFunc->needCollSeq = 1; } } } #ifndef SQLITE_OMIT_ALTERTABLE sqlite3AlterFunctions(db); #endif sqlite3AttachFunctions(db); for(i=0; i<sizeof(aAggs)/sizeof(aAggs[0]); i++){ void *pArg = 0; switch( aAggs[i].argType ){ case 1: pArg = db; break; case 2: pArg = (void *)(-1); break; } sqlite3_create_function(db, aAggs[i].zName, aAggs[i].nArg, SQLITE_UTF8, |
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Changes to src/parse.y.
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10 11 12 13 14 15 16 | ** ************************************************************************* ** 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. ** | | | 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | ** ************************************************************************* ** 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 1.186 2005/12/06 17:19:11 danielk1977 Exp $ */ // All token codes are small integers with #defines that begin with "TK_" %token_prefix TK_ // The type of the data attached to each token is Token. This is also the // default type for non-terminals. |
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986 987 988 989 990 991 992 | %ifndef SQLITE_OMIT_TRIGGER cmd ::= DROP TRIGGER fullname(X). { sqlite3DropTrigger(pParse,X); } %endif // !SQLITE_OMIT_TRIGGER //////////////////////// ATTACH DATABASE file AS name ///////////////////////// | | | | | | < | | | 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 | %ifndef SQLITE_OMIT_TRIGGER cmd ::= DROP TRIGGER fullname(X). { sqlite3DropTrigger(pParse,X); } %endif // !SQLITE_OMIT_TRIGGER //////////////////////// ATTACH DATABASE file AS name ///////////////////////// cmd ::= ATTACH database_kw_opt expr(F) AS expr(D) key_opt(K). { sqlite3Attach(pParse, F, D, K); } %type key_opt {Expr *} key_opt(A) ::= . { A = 0; } key_opt(A) ::= KEY expr(X). { A = X; } database_kw_opt ::= DATABASE. database_kw_opt ::= . //////////////////////// DETACH DATABASE name ///////////////////////////////// cmd ::= DETACH database_kw_opt expr(D). { sqlite3Detach(pParse, D); } ////////////////////////// REINDEX collation ////////////////////////////////// %ifndef SQLITE_OMIT_REINDEX cmd ::= REINDEX. {sqlite3Reindex(pParse, 0, 0);} cmd ::= REINDEX nm(X) dbnm(Y). {sqlite3Reindex(pParse, &X, &Y);} %endif |
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Changes to src/sqliteInt.h.
1 2 3 4 5 6 7 8 9 10 11 12 13 | /* ** 2001 September 15 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** Internal interface definitions for SQLite. ** | | | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | /* ** 2001 September 15 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** Internal interface definitions for SQLite. ** ** @(#) $Id: sqliteInt.h,v 1.430 2005/12/06 17:19:11 danielk1977 Exp $ */ #ifndef _SQLITEINT_H_ #define _SQLITEINT_H_ /* ** Many people are failing to set -DNDEBUG=1 when compiling SQLite. ** Setting NDEBUG makes the code smaller and run faster. So the following |
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1599 1600 1601 1602 1603 1604 1605 | void sqlite3AuthContextPop(AuthContext*); #else # define sqlite3AuthRead(a,b,c) # define sqlite3AuthCheck(a,b,c,d,e) SQLITE_OK # define sqlite3AuthContextPush(a,b,c) # define sqlite3AuthContextPop(a) ((void)(a)) #endif | | | | 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 | void sqlite3AuthContextPop(AuthContext*); #else # define sqlite3AuthRead(a,b,c) # define sqlite3AuthCheck(a,b,c,d,e) SQLITE_OK # define sqlite3AuthContextPush(a,b,c) # define sqlite3AuthContextPop(a) ((void)(a)) #endif void sqlite3Attach(Parse*, Expr*, Expr*, Expr*); void sqlite3Detach(Parse*, Expr*); int sqlite3BtreeFactory(const sqlite3 *db, const char *zFilename, int omitJournal, int nCache, Btree **ppBtree); int sqlite3FixInit(DbFixer*, Parse*, int, const char*, const Token*); int sqlite3FixSrcList(DbFixer*, SrcList*); int sqlite3FixSelect(DbFixer*, Select*); int sqlite3FixExpr(DbFixer*, Expr*); int sqlite3FixExprList(DbFixer*, ExprList*); |
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1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 | int sqlite3FindDb(sqlite3*, Token*); void sqlite3AnalysisLoad(sqlite3*,int iDB); void sqlite3DefaultRowEst(Index*); void sqlite3RegisterLikeFunctions(sqlite3*, int); int sqlite3IsLikeFunction(sqlite3*,Expr*,int*,char*); SqliteTsd *sqlite3Tsd(); void sqlite3ClearMallocFailed(); #ifdef SQLITE_SSE #include "sseInt.h" #endif #endif | > | 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 | int sqlite3FindDb(sqlite3*, Token*); void sqlite3AnalysisLoad(sqlite3*,int iDB); void sqlite3DefaultRowEst(Index*); void sqlite3RegisterLikeFunctions(sqlite3*, int); int sqlite3IsLikeFunction(sqlite3*,Expr*,int*,char*); SqliteTsd *sqlite3Tsd(); void sqlite3ClearMallocFailed(); void sqlite3AttachFunctions(sqlite3 *); #ifdef SQLITE_SSE #include "sseInt.h" #endif #endif |
Changes to test/attach2.test.
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8 9 10 11 12 13 14 | # May you share freely, never taking more than you give. # #*********************************************************************** # This file implements regression tests for SQLite library. The # focus of this script is testing the ATTACH and DETACH commands # and related functionality. # | | | 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | # May you share freely, never taking more than you give. # #*********************************************************************** # This file implements regression tests for SQLite library. The # focus of this script is testing the ATTACH and DETACH commands # and related functionality. # # $Id: attach2.test,v 1.33 2005/12/06 17:19:12 danielk1977 Exp $ # set testdir [file dirname $argv0] source $testdir/tester.tcl # Ticket #354 |
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130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 | # Ticket #574: Make sure it works using the non-callback API # do_test attach2-3.1 { db close set DB [sqlite3 db test.db] set rc [catch {sqlite3_prepare $DB "ATTACH 'test2.db' AS t2" -1 TAIL} VM] if {$rc} {lappend rc $VM} sqlite3_finalize $VM set rc } {0} do_test attach2-3.2 { set rc [catch {sqlite3_prepare $DB "DETACH t2" -1 TAIL} VM] if {$rc} {lappend rc $VM} sqlite3_finalize $VM set rc } {0} db close for {set i 2} {$i<=15} {incr i} { catch {db$i close} | > > | 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 | # Ticket #574: Make sure it works using the non-callback API # do_test attach2-3.1 { db close set DB [sqlite3 db test.db] set rc [catch {sqlite3_prepare $DB "ATTACH 'test2.db' AS t2" -1 TAIL} VM] if {$rc} {lappend rc $VM} sqlite3_step $VM sqlite3_finalize $VM set rc } {0} do_test attach2-3.2 { set rc [catch {sqlite3_prepare $DB "DETACH t2" -1 TAIL} VM] if {$rc} {lappend rc $VM} sqlite3_step $VM sqlite3_finalize $VM set rc } {0} db close for {set i 2} {$i<=15} {incr i} { catch {db$i close} |
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