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Remove default_synchronous and temp_store pragmas. Allow the safety-level

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and cache-size to be set for attached databases. (CVS 1735)

FossilOrigin-Name: 212de3ce66f746036cb2267a9f924fd55fa2f37a
This commit is contained in:
danielk1977 2004-06-26 06:37:06 +00:00
parent 75edc16f07
commit 91cf71b01f
8 changed files with 211 additions and 467 deletions
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22
manifest
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@ -1,5 +1,5 @@
C Fix\sa\sbug\sin\sthe\snew\sfull-sync\sjournal\sformat.\s(CVS\s1733)
D 2004-06-26T01:48:19
C Remove\sdefault_synchronous\sand\stemp_store\spragmas.\sAllow\sthe\ssafety-level\nand\scache-size\sto\sbe\sset\sfor\sattached\sdatabases.\s(CVS\s1735)
D 2004-06-26T06:37:07
F Makefile.in cb7a9889c38723f72b2506c4236ff30a05ff172b
F Makefile.linux-gcc a9e5a0d309fa7c38e7c14d3ecf7690879d3a5457
F README f1de682fbbd94899d50aca13d387d1b3fd3be2dd
@ -24,7 +24,7 @@ F spec.template a38492f1c1dd349fc24cb0565e08afc53045304b
F sqlite.1 83f4a9d37bdf2b7ef079a82d54eaf2e3509ee6ea
F sqlite.pc.in 30552343140c53304c2a658c080fbe810cd09ca2
F sqlite3.def 26f4e7b0a3fbaa55701e020fdec429f1594e2866
F src/attach.c 05102e2e8ac43ce639d07b47a99c7772a62420e6
F src/attach.c b105aeb8c82fbd097c5067dddde90d5f7fadf8dd
F src/auth.c 60db23b98bb94c8b0178180faaf49dc116674217
F src/btree.c 0591368af031a0ecc4620140dfdaa177b82885a1
F src/btree.h 32f96abef464cf8765b23ca669acfe90d191fcc5
@ -38,7 +38,7 @@ F src/hash.c 440c2f8cb373ee1b4e13a0988489c7cd95d55b6f
F src/hash.h 762d95f1e567664d1eafc1687de755626be962fb
F src/insert.c d99ffe87e1e1397f4233afcd06841d52d6b17b18
F src/legacy.c ad23746f15f67e34577621b1875f639c94839e1f
F src/main.c 2a4f3fe32ee6357b5b914ab5e2bd0979202570f4
F src/main.c 7a5afce156d14727a49b60ffe6ab21bcae27e6f3
F src/md5.c 7ae1c39044b95de2f62e066f47bb1deb880a1070
F src/os.h d1780e0db95cad01f213d48da22ab490eb4fd345
F src/os_common.h ba1b7306e16e2091718f2c48db0fe6c1d7a31bb8
@ -52,14 +52,14 @@ F src/os_win.c 84549f6cc815237533c5d0eb3697352b03478d96
F src/os_win.h babd4e912967c6b09088cfe38a45e8005a07ba44
F src/pager.c e3969171742e7d9681977703feed4853f5ee206a
F src/pager.h bc58d32a9dee464f7268fb68652c130a4216e438
F src/parse.y 097438674976355a10cf177bd97326c548820b86
F src/pragma.c 0750e1c360647dbe0a991f16133b0fe5e42e5039
F src/parse.y e19e066e726a31d7b2d3e6475bdf55f7e339f8a3
F src/pragma.c 16713c1bc440ccd9982a27fb4b38e1a1c95ffd29
F src/printf.c 3090c8ff397d549bc0de09b16d8ab7fd37a0c3f7
F src/random.c eff68e3f257e05e81eae6c4d50a51eb88beb4ff3
F src/select.c f02a65af34231031896e8442161cb5251e191e75
F src/shell.c 24b641700c9d90f361fcfa4f432c5b4aff704e6d
F src/sqlite.h.in b70fded2bdfeaddfb06adea3888118b722975136
F src/sqliteInt.h dd796b6abc6d50505fe33c54f0143d7000681a41
F src/sqliteInt.h ed55c1f149875b6484798381e6933f5f5ad1a4ce
F src/table.c af14284fa36c8d41f6829e3f2819dce07d3e2de2
F src/tclsqlite.c 8d093146332b2f0cbf2a8ebe8597d481619308a3
F src/test1.c e4e0ae8af8040c848ef35f92e6a22b2245b9b873
@ -141,7 +141,7 @@ F test/notnull.test 7a08117a71e74b0321aaa937dbeb41a09d6eb1d0
F test/null.test 64730a1c32955e5cc510b7632fed6b9929a4029a
F test/pager.test 059cc5c58d3b5a851343dff8c56cf7286425d03a
F test/pager2.test 55469c7c1c1a54d6b32d7b3cc99001e90101a1ce
F test/pragma.test e09ac12edbdac81d21ca88084fef376c7667f5b0
F test/pragma.test a0dac4320e130e31e855bbdb935645d7c45d6340
F test/printf.test 1eb584b7272d1abdfe117b2ef7cf3376ae8e4e06
F test/progress.test 7542a6ac7894a1b7730c1f9a27f3f8b9388a4d25 x
F test/quick.test 4c0b3eabe2e0e606622d63d7d61ef6efb3ce156b
@ -229,7 +229,7 @@ F www/tclsqlite.tcl 19191cf2a1010eaeff74c51d83fd5f5a4d899075
F www/vdbe.tcl 59288db1ac5c0616296b26dce071c36cb611dfe9
F www/version3.tcl 563ba3ac02f64da27ab17f3edbe8e56bfd0293fb
F www/whentouse.tcl a8335bce47cc2fddb07f19052cb0cb4d9129a8e4
P dfab1e9ac0fbe57fe4a1cbe6c363ef43b3b075ef
R e246eb7b8fa1d2e1a6e20fbeb7cc5c16
P 02bd3acd7efde9cc6b67c97e98db9f4b62d27877
R 609621fb2d8c2cbffc869dbeea94770a
U danielk1977
Z ead895d5ca480d6e5d884e35379e8164
Z 231b7ef4aa565faa68238895f77436c5

2
manifest.uuid
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@ -1 +1 @@
02bd3acd7efde9cc6b67c97e98db9f4b62d27877
212de3ce66f746036cb2267a9f924fd55fa2f37a

3
src/attach.c
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@ -11,7 +11,7 @@
*************************************************************************
** This file contains code used to implement the ATTACH and DETACH commands.
**
** $Id: attach.c,v 1.17 2004/06/19 16:06:11 drh Exp $
** $Id: attach.c,v 1.18 2004/06/26 06:37:07 danielk1977 Exp $
*/
#include "sqliteInt.h"
@ -84,6 +84,7 @@ void sqlite3Attach(Parse *pParse, Token *pFilename, Token *pDbname, Token *pKey)
sqlite3HashInit(&aNew->trigHash, SQLITE_HASH_STRING, 0);
sqlite3HashInit(&aNew->aFKey, SQLITE_HASH_STRING, 1);
aNew->zName = zName;
aNew->safety_level = 3;
rc = sqlite3BtreeFactory(db, zFile, 0, MAX_PAGES, &aNew->pBt);
if( rc ){
sqlite3ErrorMsg(pParse, "unable to open database: %s", zFile);

50
src/main.c
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@ -14,7 +14,7 @@
** other files are for internal use by SQLite and should not be
** accessed by users of the library.
**
** $Id: main.c,v 1.233 2004/06/22 12:13:55 drh Exp $
** $Id: main.c,v 1.234 2004/06/26 06:37:07 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "os.h"
@ -218,9 +218,9 @@ static int sqlite3InitOne(sqlite *db, int iDb, char **pzErrMsg){
** meta[0] Schema cookie. Changes with each schema change.
** meta[1] File format of schema layer.
** meta[2] Size of the page cache.
** meta[3] Synchronous setting. 1:off, 2:normal, 3:full
** meta[3]
** meta[4] Db text encoding. 1:UTF-8 3:UTF-16 LE 4:UTF-16 BE
** meta[5] Pragma temp_store value. See comments on BtreeFactory
** meta[5]
** meta[6]
** meta[7]
** meta[8]
@ -265,16 +265,11 @@ static int sqlite3InitOne(sqlite *db, int iDb, char **pzErrMsg){
}
}
if( iDb==0 ){
size = meta[2];
if( size==0 ){ size = MAX_PAGES; }
db->cache_size = size;
db->safety_level = meta[3];
if( meta[5]>0 && meta[5]<=2 && db->temp_store==0 ){
db->temp_store = meta[5];
}
if( db->safety_level==0 ) db->safety_level = 2;
db->aDb[iDb].cache_size = size;
if( iDb==0 ){
db->file_format = meta[1];
if( db->file_format==0 ){
/* This happens if the database was initially empty */
@ -291,8 +286,7 @@ static int sqlite3InitOne(sqlite *db, int iDb, char **pzErrMsg){
return SQLITE_ERROR;
}
sqlite3BtreeSetCacheSize(db->aDb[iDb].pBt, db->cache_size);
sqlite3BtreeSetSafetyLevel(db->aDb[iDb].pBt, meta[3]==0 ? 2 : meta[3]);
sqlite3BtreeSetCacheSize(db->aDb[iDb].pBt, db->aDb[iDb].cache_size);
/* Read the schema information out of the schema tables
*/
@ -807,22 +801,6 @@ void *sqlite3_commit_hook(
** the connection is closed.) If zFilename is NULL then the database
** is for temporary use only and is deleted as soon as the connection
** is closed.
**
** A temporary database can be either a disk file (that is automatically
** deleted when the file is closed) or a set of red-black trees held in memory,
** depending on the values of the TEMP_STORE compile-time macro and the
** db->temp_store variable, according to the following chart:
**
** TEMP_STORE db->temp_store Location of temporary database
** ---------- -------------- ------------------------------
** 0 any file
** 1 1 file
** 1 2 memory
** 1 0 file
** 2 1 file
** 2 2 memory
** 2 0 memory
** 3 any memory
*/
int sqlite3BtreeFactory(
const sqlite *db, /* Main database when opening aux otherwise 0 */
@ -837,7 +815,10 @@ int sqlite3BtreeFactory(
if( omitJournal ){
btree_flags |= BTREE_OMIT_JOURNAL;
}
if( !zFilename ){
if( !zFilename || !strcmp(zFilename, ":memory:") ){
/* If zFilename is NULL or the magic string ":memory:" then the
** new btree storest data in main memory, not a file.
*/
btree_flags |= BTREE_MEMORY;
}
@ -1127,12 +1108,6 @@ static int openDatabase(
sqlite3_create_collation(db, "NOCASE", SQLITE_UTF8, 0, nocaseCollatingFunc);
/* Open the backend database driver */
if( zFilename[0]==':' && strcmp(zFilename,":memory:")==0 ){
db->temp_store = 2;
db->nMaster = 0; /* Disable atomic multi-file commit for :memory: */
}else{
db->nMaster = -1; /* Size of master journal filename initially unknown */
}
rc = sqlite3BtreeFactory(db, zFilename, 0, MAX_PAGES, &db->aDb[0].pBt);
if( rc!=SQLITE_OK ){
sqlite3Error(db, rc, 0);
@ -1142,6 +1117,11 @@ static int openDatabase(
db->aDb[0].zName = "main";
db->aDb[1].zName = "temp";
/* The default safety_level for the main database is 'full' for the temp
** database it is 'NONE'. This matches the pager layer defaults. */
db->aDb[0].safety_level = 3;
db->aDb[1].safety_level = 1;
/* Register all built-in functions, but do not attempt to read the
** database schema yet. This is delayed until the first time the database
** is accessed.

16
src/parse.y
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@ -14,7 +14,7 @@
** the parser. Lemon will also generate a header file containing
** numeric codes for all of the tokens.
**
** @(#) $Id: parse.y,v 1.127 2004/06/09 09:55:18 danielk1977 Exp $
** @(#) $Id: parse.y,v 1.128 2004/06/26 06:37:07 danielk1977 Exp $
*/
%token_prefix TK_
%token_type {Token}
@ -782,12 +782,14 @@ cmd ::= VACUUM nm(X). {sqlite3Vacuum(pParse,&X);}
///////////////////////////// The PRAGMA command /////////////////////////////
//
cmd ::= PRAGMA ids(X) EQ nm(Y). {sqlite3Pragma(pParse,&X,&Y,0);}
cmd ::= PRAGMA ids(X) EQ ON(Y). {sqlite3Pragma(pParse,&X,&Y,0);}
cmd ::= PRAGMA ids(X) EQ plus_num(Y). {sqlite3Pragma(pParse,&X,&Y,0);}
cmd ::= PRAGMA ids(X) EQ minus_num(Y). {sqlite3Pragma(pParse,&X,&Y,1);}
cmd ::= PRAGMA ids(X) LP nm(Y) RP. {sqlite3Pragma(pParse,&X,&Y,0);}
cmd ::= PRAGMA ids(X). {sqlite3Pragma(pParse,&X,&X,0);}
cmd ::= PRAGMA nm(X) dbnm(Z) EQ nm(Y). {sqlite3Pragma(pParse,&X,&Z,&Y,0);}
cmd ::= PRAGMA nm(X) dbnm(Z) EQ ON(Y). {sqlite3Pragma(pParse,&X,&Z,&Y,0);}
cmd ::= PRAGMA nm(X) dbnm(Z) EQ plus_num(Y). {sqlite3Pragma(pParse,&X,&Z,&Y,0);}
cmd ::= PRAGMA nm(X) dbnm(Z) EQ minus_num(Y). {
sqlite3Pragma(pParse,&X,&Z,&Y,1);
}
cmd ::= PRAGMA nm(X) dbnm(Z) LP nm(Y) RP. {sqlite3Pragma(pParse,&X,&Z,&Y,0);}
cmd ::= PRAGMA nm(X) dbnm(Z). {sqlite3Pragma(pParse,&X,&Z,0,0);}
plus_num(A) ::= plus_opt number(X). {A = X;}
minus_num(A) ::= MINUS number(X). {A = X;}
number(A) ::= INTEGER(X). {A = X;}

261
src/pragma.c
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@ -11,7 +11,7 @@
*************************************************************************
** This file contains code used to implement the PRAGMA command.
**
** $Id: pragma.c,v 1.52 2004/06/21 09:06:42 danielk1977 Exp $
** $Id: pragma.c,v 1.53 2004/06/26 06:37:07 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
@ -71,46 +71,6 @@ static int getSafetyLevel(char *z){
return 1;
}
/*
** Interpret the given string as a temp db location. Return 1 for file
** backed temporary databases, 2 for the Red-Black tree in memory database
** and 0 to use the compile-time default.
*/
static int getTempStore(const char *z){
if( z[0]>='0' && z[0]<='2' ){
return z[0] - '0';
}else if( sqlite3StrICmp(z, "file")==0 ){
return 1;
}else if( sqlite3StrICmp(z, "memory")==0 ){
return 2;
}else{
return 0;
}
}
/*
** If the TEMP database is open, close it and mark the database schema
** as needing reloading. This must be done when using the TEMP_STORE
** or DEFAULT_TEMP_STORE pragmas.
*/
static int changeTempStorage(Parse *pParse, const char *zStorageType){
int ts = getTempStore(zStorageType);
sqlite *db = pParse->db;
if( db->temp_store==ts ) return SQLITE_OK;
if( db->aDb[1].pBt!=0 ){
if( !db->autoCommit ){
sqlite3ErrorMsg(pParse, "temporary storage cannot be changed "
"from within a transaction");
return SQLITE_ERROR;
}
sqlite3BtreeClose(db->aDb[1].pBt);
db->aDb[1].pBt = 0;
sqlite3ResetInternalSchema(db, 0);
}
db->temp_store = ts;
return SQLITE_OK;
}
/*
** Check to see if zRight and zLeft refer to a pragma that queries
** or changes one of the flags in db->flags. Return 1 if so and 0 if not.
@ -157,27 +117,43 @@ static int flagPragma(Parse *pParse, const char *zLeft, const char *zRight){
**
** Pragmas are of this form:
**
** PRAGMA id = value
** PRAGMA [database.]id [= value]
**
** The identifier might also be a string. The value is a string, and
** identifier, or a number. If minusFlag is true, then the value is
** a number that was preceded by a minus sign.
*/
void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
char *zLeft = 0;
char *zRight = 0;
void sqlite3Pragma(
Parse *pParse,
Token *pId1, /* First part of [database.]id field */
Token *pId2, /* Second part of [database.]id field, or NULL */
Token *pValue, /* Token for <value>, or NULL */
int minusFlag /* True if a '-' sign preceded <value> */
){
char *zLeft = 0; /* Nul-terminated UTF-8 string <id> */
char *zRight = 0; /* Nul-terminated UTF-8 string <value>, or NULL */
const char *zDb = 0; /* The database name */
Token *pId; /* Pointer to <id> token */
int iDb; /* Database index for <database> */
sqlite *db = pParse->db;
Vdbe *v = sqlite3GetVdbe(pParse);
if( v==0 ) return;
zLeft = sqlite3NameFromToken(pLeft);
/* Interpret the [database.] part of the pragma statement. iDb is the
** index of the database this pragma is being applied to in db.aDb[]. */
iDb = sqlite3TwoPartName(pParse, pId1, pId2, &pId);
if( iDb<0 ) return;
zLeft = sqlite3NameFromToken(pId);
if( minusFlag ){
zRight = 0;
sqlite3SetNString(&zRight, "-", 1, pRight->z, pRight->n, 0);
sqlite3SetNString(&zRight, "-", 1, pValue->z, pValue->n, 0);
}else{
zRight = sqlite3NameFromToken(pRight);
zRight = sqlite3NameFromToken(pValue);
}
if( sqlite3AuthCheck(pParse, SQLITE_PRAGMA, zLeft, zRight, 0) ){
zDb = ((iDb>0)?db->aDb[iDb].zName:0);
if( sqlite3AuthCheck(pParse, SQLITE_PRAGMA, zLeft, zRight, zDb) ){
goto pragma_out;
}
@ -199,7 +175,7 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
*/
if( sqlite3StrICmp(zLeft,"default_cache_size")==0 ){
static VdbeOpList getCacheSize[] = {
{ OP_ReadCookie, 0, 2, 0},
{ OP_ReadCookie, 0, 2, 0}, /* 0 */
{ OP_AbsValue, 0, 0, 0},
{ OP_Dup, 0, 0, 0},
{ OP_Integer, 0, 0, 0},
@ -212,24 +188,25 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
pParse->nErr++;
goto pragma_out;
}
if( pRight->z==pLeft->z ){
if( !zRight ){
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, "cache_size", P3_STATIC);
addr = sqlite3VdbeAddOpList(v, ArraySize(getCacheSize), getCacheSize);
sqlite3VdbeChangeP1(v, addr, iDb);
sqlite3VdbeChangeP1(v, addr+5, MAX_PAGES);
}else{
int size = atoi(zRight);
if( size<0 ) size = -size;
sqlite3BeginWriteOperation(pParse, 0, 0);
sqlite3BeginWriteOperation(pParse, 0, iDb);
sqlite3VdbeAddOp(v, OP_Integer, size, 0);
sqlite3VdbeAddOp(v, OP_ReadCookie, 0, 2);
sqlite3VdbeAddOp(v, OP_ReadCookie, iDb, 2);
addr = sqlite3VdbeAddOp(v, OP_Integer, 0, 0);
sqlite3VdbeAddOp(v, OP_Ge, 0, addr+3);
sqlite3VdbeAddOp(v, OP_Negative, 0, 0);
sqlite3VdbeAddOp(v, OP_SetCookie, 0, 2);
sqlite3VdbeAddOp(v, OP_SetCookie, iDb, 2);
sqlite3EndWriteOperation(pParse);
db->cache_size = db->cache_size<0 ? -size : size;
sqlite3BtreeSetCacheSize(db->aDb[0].pBt, db->cache_size);
db->aDb[iDb].cache_size = size;
sqlite3BtreeSetCacheSize(db->aDb[iDb].pBt, db->aDb[iDb].cache_size);
}
}else
@ -255,9 +232,9 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
pParse->nErr++;
goto pragma_out;
}
if( pRight->z==pLeft->z ){
int size = db->cache_size;;
if( size<0 ) size = -size;
if( !zRight ){
int size = db->aDb[iDb].cache_size;
assert( size>0 );
sqlite3VdbeAddOp(v, OP_Integer, size, 0);
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, "cache_size", P3_STATIC);
@ -265,77 +242,8 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
}else{
int size = atoi(zRight);
if( size<0 ) size = -size;
if( db->cache_size<0 ) size = -size;
db->cache_size = size;
sqlite3BtreeSetCacheSize(db->aDb[0].pBt, db->cache_size);
}
}else
/*
** PRAGMA default_synchronous
** PRAGMA default_synchronous=ON|OFF|NORMAL|FULL
**
** The first form returns the persistent value of the "synchronous" setting
** that is stored in the database. This is the synchronous setting that
** is used whenever the database is opened unless overridden by a separate
** "synchronous" pragma. The second form changes the persistent and the
** local synchronous setting to the value given.
**
** If synchronous is OFF, SQLite does not attempt any fsync() systems calls
** to make sure data is committed to disk. Write operations are very fast,
** but a power failure can leave the database in an inconsistent state.
** If synchronous is ON or NORMAL, SQLite will do an fsync() system call to
** make sure data is being written to disk. The risk of corruption due to
** a power loss in this mode is negligible but non-zero. If synchronous
** is FULL, extra fsync()s occur to reduce the risk of corruption to near
** zero, but with a write performance penalty. The default mode is NORMAL.
*/
if( sqlite3StrICmp(zLeft,"default_synchronous")==0 ){
static VdbeOpList getSync[] = {
{ OP_ReadCookie, 0, 3, 0},
{ OP_Dup, 0, 0, 0},
{ OP_If, 0, 0, 0}, /* 2 */
{ OP_ReadCookie, 0, 2, 0},
{ OP_Integer, 0, 0, 0},
{ OP_Lt, 0, 5, 0},
{ OP_AddImm, 1, 0, 0},
{ OP_Callback, 1, 0, 0},
{ OP_Halt, 0, 0, 0},
{ OP_AddImm, -1, 0, 0}, /* 9 */
{ OP_Callback, 1, 0, 0}
};
int addr;
if( SQLITE_OK!=sqlite3ReadSchema(pParse->db, &pParse->zErrMsg) ){
pParse->nErr++;
goto pragma_out;
}
if( pRight->z==pLeft->z ){
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, "synchronous", P3_STATIC);
addr = sqlite3VdbeAddOpList(v, ArraySize(getSync), getSync);
sqlite3VdbeChangeP2(v, addr+2, addr+9);
}else{
int size = db->cache_size;
if( size<0 ) size = -size;
sqlite3BeginWriteOperation(pParse, 0, 0);
sqlite3VdbeAddOp(v, OP_ReadCookie, 0, 2);
sqlite3VdbeAddOp(v, OP_Dup, 0, 0);
addr = sqlite3VdbeAddOp(v, OP_Integer, 0, 0);
sqlite3VdbeAddOp(v, OP_Ne, 0, addr+3);
sqlite3VdbeAddOp(v, OP_AddImm, MAX_PAGES, 0);
sqlite3VdbeAddOp(v, OP_AbsValue, 0, 0);
db->safety_level = getSafetyLevel(zRight)+1;
if( db->safety_level==1 ){
sqlite3VdbeAddOp(v, OP_Negative, 0, 0);
size = -size;
}
sqlite3VdbeAddOp(v, OP_SetCookie, 0, 2);
sqlite3VdbeAddOp(v, OP_Integer, db->safety_level, 0);
sqlite3VdbeAddOp(v, OP_SetCookie, 0, 3);
sqlite3EndWriteOperation(pParse);
db->cache_size = size;
sqlite3BtreeSetCacheSize(db->aDb[0].pBt, db->cache_size);
sqlite3BtreeSetSafetyLevel(db->aDb[0].pBt, db->safety_level);
db->aDb[iDb].cache_size = size;
sqlite3BtreeSetCacheSize(db->aDb[iDb].pBt, db->aDb[iDb].cache_size);
}
}else
@ -356,19 +264,19 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
pParse->nErr++;
goto pragma_out;
}
if( pRight->z==pLeft->z ){
if( !zRight ){
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, "synchronous", P3_STATIC);
sqlite3VdbeAddOp(v, OP_Integer, db->safety_level-1, 0);
sqlite3VdbeAddOp(v, OP_Integer, db->aDb[iDb].safety_level-1, 0);
sqlite3VdbeAddOpList(v, ArraySize(getSync), getSync);
}else{
int size = db->cache_size;
if( size<0 ) size = -size;
db->safety_level = getSafetyLevel(zRight)+1;
if( db->safety_level==1 ) size = -size;
db->cache_size = size;
sqlite3BtreeSetCacheSize(db->aDb[0].pBt, db->cache_size);
sqlite3BtreeSetSafetyLevel(db->aDb[0].pBt, db->safety_level);
if( !db->autoCommit ){
sqlite3ErrorMsg(pParse,
"Safety level may not be changed inside a transaction");
}else{
db->aDb[iDb].safety_level = getSafetyLevel(zRight)+1;
sqlite3BtreeSetSafetyLevel(db->aDb[iDb].pBt,db->aDb[iDb].safety_level);
}
}
}else
@ -386,6 +294,18 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
/* The flagPragma() call also generates any necessary code */
}else
/*
** PRAGMA table_info(<table>)
**
** Return a single row for each column of the named table. The columns of
** the returned data set are:
**
** cid: Column id (numbered from left to right, starting at 0)
** name: Column name
** type: Column declaration type.
** notnull: True if 'NOT NULL' is part of column declaration
** dflt_value: The default value for the column, if any.
*/
if( sqlite3StrICmp(zLeft, "table_info")==0 ){
Table *pTab;
if( SQLITE_OK!=sqlite3ReadSchema(pParse->db, &pParse->zErrMsg) ){
@ -530,67 +450,6 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
}
}else
/*
** PRAGMA temp_store
** PRAGMA temp_store = "default"|"memory"|"file"
**
** Return or set the local value of the temp_store flag. Changing
** the local value does not make changes to the disk file and the default
** value will be restored the next time the database is opened.
**
** Note that it is possible for the library compile-time options to
** override this setting
*/
if( sqlite3StrICmp(zLeft, "temp_store")==0 ){
static VdbeOpList getTmpDbLoc[] = {
{ OP_Callback, 1, 0, 0},
};
if( SQLITE_OK!=sqlite3ReadSchema(pParse->db, &pParse->zErrMsg) ){
pParse->nErr++;
goto pragma_out;
}
if( pRight->z==pLeft->z ){
sqlite3VdbeAddOp(v, OP_Integer, db->temp_store, 0);
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, "temp_store", P3_STATIC);
sqlite3VdbeAddOpList(v, ArraySize(getTmpDbLoc), getTmpDbLoc);
}else{
changeTempStorage(pParse, zRight);
}
}else
/*
** PRAGMA default_temp_store
** PRAGMA default_temp_store = "default"|"memory"|"file"
**
** Return or set the value of the persistent temp_store flag. Any
** change does not take effect until the next time the database is
** opened.
**
** Note that it is possible for the library compile-time options to
** override this setting
*/
if( sqlite3StrICmp(zLeft, "default_temp_store")==0 ){
static VdbeOpList getTmpDbLoc[] = {
{ OP_ReadCookie, 0, 5, 0},
{ OP_Callback, 1, 0, 0}};
if( SQLITE_OK!=sqlite3ReadSchema(pParse->db, &pParse->zErrMsg) ){
pParse->nErr++;
goto pragma_out;
}
if( pRight->z==pLeft->z ){
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, "temp_store", P3_STATIC);
sqlite3VdbeAddOpList(v, ArraySize(getTmpDbLoc), getTmpDbLoc);
}else{
sqlite3BeginWriteOperation(pParse, 0, 0);
sqlite3VdbeAddOp(v, OP_Integer, getTempStore(zRight), 0);
sqlite3VdbeAddOp(v, OP_SetCookie, 0, 5);
sqlite3EndWriteOperation(pParse);
}
}else
#ifndef NDEBUG
if( sqlite3StrICmp(zLeft, "parser_trace")==0 ){
extern void sqlite3ParserTrace(FILE*, char *);
@ -779,7 +638,7 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
};
struct EncName *pEnc;
encnames[6].enc = encnames[7].enc = SQLITE_UTF16NATIVE;
if( pRight->z==pLeft->z ){ /* "PRAGMA encoding" */
if( !zRight ){ /* "PRAGMA encoding" */
if( SQLITE_OK!=sqlite3ReadSchema(pParse->db, &pParse->zErrMsg) ){
pParse->nErr++;
goto pragma_out;

27
src/sqliteInt.h
View File

@ -11,7 +11,7 @@
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.299 2004/06/22 12:13:55 drh Exp $
** @(#) $Id: sqliteInt.h,v 1.300 2004/06/26 06:37:07 danielk1977 Exp $
*/
#ifndef _SQLITEINT_H_
#define _SQLITEINT_H_
@ -67,19 +67,6 @@
*/
#define MAX_ATTACHED 10
/*
** The next macro is used to determine where TEMP tables and indices
** are stored. Possible values:
**
** 0 Always use a temporary files
** 1 Use a file unless overridden by "PRAGMA temp_store"
** 2 Use memory unless overridden by "PRAGMA temp_store"
** 3 Always use memory
*/
#ifndef TEMP_STORE
# define TEMP_STORE 1
#endif
/*
** When building SQLite for embedded systems where memory is scarce,
** you can define one or more of the following macros to omit extra
@ -290,6 +277,8 @@ struct Db {
Hash aFKey; /* Foreign keys indexed by to-table */
u8 inTrans; /* 0: not writable. 1: Transaction. 2: Checkpoint */
u16 flags; /* Flags associated with this database */
u8 safety_level; /* How aggressive at synching data to disk */
int cache_size; /* Number of pages to use in the cache */
void *pAux; /* Auxiliary data. Usually NULL */
void (*xFreeAux)(void*); /* Routine to free pAux */
};
@ -335,11 +324,6 @@ struct BusyHandler {
/*
** Each database is an instance of the following structure.
**
** The sqlite.temp_store determines where temporary database files
** are stored. If 1, then a file is created to hold those tables. If
** 2, then they are held in memory. 0 means use the default value in
** the TEMP_STORE macro.
**
** The sqlite.lastRowid records the last insert rowid generated by an
** insert statement. Inserts on views do not affect its value. Each
** trigger has its own context, so that lastRowid can be updated inside
@ -369,9 +353,6 @@ struct sqlite {
Db aDbStatic[2]; /* Static space for the 2 default backends */
int flags; /* Miscellanous flags. See below */
u8 file_format; /* What file format version is this database? */
u8 safety_level; /* How aggressive at synching data to disk */
u8 temp_store; /* 1=file, 2=memory, 0=compile-time default */
int cache_size; /* Number of pages to use in the cache */
int nTable; /* Number of tables in the database */
BusyHandler busyHandler; /* Busy callback */
void *pCommitArg; /* Argument to xCommitCallback() */
@ -1225,7 +1206,7 @@ void sqlite3ExprDelete(Expr*);
ExprList *sqlite3ExprListAppend(ExprList*,Expr*,Token*);
void sqlite3ExprListDelete(ExprList*);
int sqlite3Init(sqlite*, char**);
void sqlite3Pragma(Parse*,Token*,Token*,int);
void sqlite3Pragma(Parse*,Token*,Token*,Token*,int);
void sqlite3ResetInternalSchema(sqlite*, int);
void sqlite3BeginParse(Parse*,int);
void sqlite3RollbackInternalChanges(sqlite*);

275
test/pragma.test
View File

@ -12,11 +12,21 @@
#
# This file implements tests for the PRAGMA command.
#
# $Id: pragma.test,v 1.13 2004/06/19 00:16:31 drh Exp $
# $Id: pragma.test,v 1.14 2004/06/26 06:37:07 danielk1977 Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
# Test organization:
#
# pragma-1.*: Test cache_size, default_cache_size and synchronous on main db.
# pragma-2.*: Test synchronous on attached db.
# pragma-3.*: Test detection of table/index inconsistency by integrity_check.
# pragma-4.*: Test cache_size and default_cache_size on attached db.
# pragma-5.*: Test that pragma synchronous may not be used inside of a
# transaction.
#
# Delete the preexisting database to avoid the special setup
# that the "all.test" script does.
#
@ -29,18 +39,16 @@ do_test pragma-1.1 {
PRAGMA cache_size;
PRAGMA default_cache_size;
PRAGMA synchronous;
PRAGMA default_synchronous;
}
} {2000 2000 1 1}
} {2000 2000 2}
do_test pragma-1.2 {
execsql {
PRAGMA cache_size=1234;
PRAGMA cache_size;
PRAGMA default_cache_size;
PRAGMA synchronous;
PRAGMA default_synchronous;
}
} {1234 2000 1 1}
} {1234 2000 2}
do_test pragma-1.3 {
db close
sqlite3 db test.db
@ -48,36 +56,32 @@ do_test pragma-1.3 {
PRAGMA cache_size;
PRAGMA default_cache_size;
PRAGMA synchronous;
PRAGMA default_synchronous;
}
} {2000 2000 1 1}
} {2000 2000 2}
do_test pragma-1.4 {
execsql {
PRAGMA synchronous=OFF;
PRAGMA cache_size;
PRAGMA default_cache_size;
PRAGMA synchronous;
PRAGMA default_synchronous;
}
} {2000 2000 0 1}
} {2000 2000 0}
do_test pragma-1.5 {
execsql {
PRAGMA cache_size=4321;
PRAGMA cache_size;
PRAGMA default_cache_size;
PRAGMA synchronous;
PRAGMA default_synchronous;
}
} {4321 2000 0 1}
} {4321 2000 0}
do_test pragma-1.6 {
execsql {
PRAGMA synchronous=ON;
PRAGMA cache_size;
PRAGMA default_cache_size;
PRAGMA synchronous;
PRAGMA default_synchronous;
}
} {4321 2000 1 1}
} {4321 2000 1}
do_test pragma-1.7 {
db close
sqlite3 db test.db
@ -85,84 +89,78 @@ do_test pragma-1.7 {
PRAGMA cache_size;
PRAGMA default_cache_size;
PRAGMA synchronous;
PRAGMA default_synchronous;
}
} {2000 2000 1 1}
} {2000 2000 2}
do_test pragma-1.8 {
execsql {
PRAGMA default_synchronous=OFF;
PRAGMA cache_size;
PRAGMA default_cache_size;
PRAGMA synchronous;
PRAGMA default_synchronous;
}
} {2000 2000 0 0}
do_test pragma-1.9 {
execsql {
PRAGMA default_cache_size=123;
PRAGMA cache_size;
PRAGMA default_cache_size;
PRAGMA synchronous;
PRAGMA default_synchronous;
}
} {123 123 0 0}
do_test pragma-1.10 {
} {123 123 2}
do_test pragma-1.9 {
db close
set ::DB [sqlite3 db test.db]
execsql {
PRAGMA cache_size;
PRAGMA default_cache_size;
PRAGMA synchronous;
PRAGMA default_synchronous;
}
} {123 123 0 0}
do_test pragma-1.11 {
} {123 123 2}
do_test pragma-1.10 {
execsql {
PRAGMA synchronous=NORMAL;
PRAGMA cache_size;
PRAGMA default_cache_size;
PRAGMA synchronous;
PRAGMA default_synchronous;
}
} {123 123 1 0}
do_test pragma-1.12 {
} {123 123 1}
do_test pragma-1.11 {
execsql {
PRAGMA synchronous=FULL;
PRAGMA cache_size;
PRAGMA default_cache_size;
PRAGMA synchronous;
PRAGMA default_synchronous;
}
} {123 123 2 0}
do_test pragma-1.13 {
} {123 123 2}
do_test pragma-1.12 {
db close
set ::DB [sqlite3 db test.db]
execsql {
PRAGMA cache_size;
PRAGMA default_cache_size;
PRAGMA synchronous;
PRAGMA default_synchronous;
}
} {123 123 0 0}
do_test pragma-1.14 {
} {123 123 2}
# Test modifying the safety_level of an attached database.
do_test pragma-2.1 {
file delete -force test2.db
file delete -force test2.db-journal
execsql {
PRAGMA default_synchronous=FULL;
PRAGMA cache_size;
PRAGMA default_cache_size;
PRAGMA synchronous;
PRAGMA default_synchronous;
ATTACH 'test2.db' AS aux;
}
} {123 123 2 2}
do_test pragma-1.15 {
db close
set ::DB [sqlite3 db test.db]
} {}
do_test pragma-2.2 {
execsql {
PRAGMA cache_size;
PRAGMA default_cache_size;
PRAGMA synchronous;
PRAGMA default_synchronous;
pragma aux.synchronous;
}
} {123 123 2 2}
} {2}
do_test pragma-2.3 {
execsql {
pragma aux.synchronous = OFF;
pragma aux.synchronous;
pragma synchronous;
}
} {0 2}
do_test pragma-2.4 {
execsql {
pragma aux.synchronous = ON;
pragma synchronous;
pragma aux.synchronous;
}
} {2 1}
# Construct a corrupted index and make sure the integrity_check
# pragma finds it.
@ -192,150 +190,73 @@ do_test pragma-3.2 {
} {{rowid 1 missing from index i2} {wrong # of entries in index i2}}
}; # endif has-codec
# Test the temp_store and default_temp_store pragmas
#
do_test pragma-3.3 {
execsql {
DROP INDEX i2;
}
} {}
# Test modifying the cache_size of an attached database.
do_test pragma-4.1 {
execsql {
pragma aux.cache_size;
pragma aux.default_cache_size;
}
} {2000 2000}
do_test pragma-4.2 {
execsql {
PRAGMA temp_store='default';
PRAGMA temp_store;
pragma aux.cache_size = 50;
pragma aux.cache_size;
pragma aux.default_cache_size;
}
} {0}
} {50 2000}
do_test pragma-4.3 {
execsql {
PRAGMA temp_store='file';
PRAGMA temp_store;
pragma aux.default_cache_size = 456;
pragma aux.cache_size;
pragma aux.default_cache_size;
}
} {1}
} {456 456}
do_test pragma-4.4 {
execsql {
PRAGMA temp_store='memory';
PRAGMA temp_store;
pragma cache_size;
pragma default_cache_size;
}
} {2}
} {123 123}
do_test pragma-4.5 {
execsql {
PRAGMA default_temp_store='default';
PRAGMA default_temp_store;
DETACH aux;
ATTACH 'test3.db' AS aux;
pragma aux.cache_size;
pragma aux.default_cache_size;
}
} {0}
} {2000 2000}
do_test pragma-4.6 {
execsql {
PRAGMA temp_store;
DETACH aux;
ATTACH 'test2.db' AS aux;
pragma aux.cache_size;
pragma aux.default_cache_size;
}
} {2}
do_test pragma-4.7 {
db close
sqlite3 db test.db
execsql {
PRAGMA temp_store;
}
} {0}
do_test pragma-4.8 {
execsql {
PRAGMA default_temp_store;
}
} {0}
do_test pragma-4.9 {
execsql {
PRAGMA default_temp_store='file';
PRAGMA default_temp_store;
}
} {1}
do_test pragma-4.10 {
execsql {
PRAGMA temp_store;
}
} {0}
do_test pragma-4.11 {
db close
sqlite3 db test.db
execsql {
PRAGMA temp_store;
}
} {1}
do_test pragma-4.12 {
execsql {
PRAGMA default_temp_store;
}
} {1}
do_test pragma-4.13 {
execsql {
PRAGMA default_temp_store='memory';
PRAGMA default_temp_store;
}
} {2}
do_test pragma-4.14 {
execsql {
PRAGMA temp_store;
}
} {1}
do_test pragma-4.15 {
db close
sqlite3 db test.db
execsql {
PRAGMA temp_store;
}
} {2}
do_test pragma-4.16 {
execsql {
PRAGMA default_temp_store;
}
} {2}
do_test pragma-4.17 {
execsql {
PRAGMA temp_store='file';
PRAGMA temp_store
}
} {1}
do_test pragma-4.18 {
execsql {
PRAGMA default_temp_store
}
} {2}
do_test pragma-4.19 {
db close
sqlite3 db test.db
execsql {
PRAGMA temp_store
}
} {2}
} {456 456}
# Changing the TEMP_STORE deletes any existing temporary tables
#
do_test pragma-4.20 {
execsql {SELECT name FROM sqlite_temp_master}
} {}
do_test pragma-4.21 {
# Test that modifying the sync-level in the middle of a transaction is
# disallowed.
do_test pragma-5.0 {
execsql {
CREATE TEMP TABLE test1(a,b,c);
SELECT name FROM sqlite_temp_master;
pragma synchronous;
}
} {test1}
do_test pragma-4.22 {
execsql {
PRAGMA temp_store='file';
SELECT name FROM sqlite_temp_master;
}
} {}
do_test pragma-4.23 {
execsql {
CREATE TEMP TABLE test1(a,b,c);
SELECT name FROM sqlite_temp_master;
}
} {test1}
do_test pragma-4.24 {
execsql {
PRAGMA temp_store='memory';
SELECT name FROM sqlite_temp_master;
}
} {}
do_test pragma-4.25 {
} {2}
do_test pragma-5.1 {
catchsql {
BEGIN;
PRAGMA temp_store='default';
COMMIT;
pragma synchronous = OFF;
}
} {1 {temporary storage cannot be changed from within a transaction}}
catchsql {COMMIT}
} {1 {Safety level may not be changed inside a transaction}}
do_test pragma-5.2 {
execsql {
pragma synchronous;
}
} {2}
finish_test