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Adding table column query capability to support ODBC. (CVS 278)

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FossilOrigin-Name: b63b3f3684a3d584ef99f54cde76b6c483bbfef7
This commit is contained in:
drh
2001-10-06 16:33:02 +00:00
parent 480bf1769d
commit 382c0247c7
20 changed files with 361 additions and 105 deletions
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35
src/main.c
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@@ -14,14 +14,16 @@
** other files are for internal use by SQLite and should not be
** accessed by users of the library.
**
** $Id: main.c,v 1.42 2001/09/27 15:11:54 drh Exp $
** $Id: main.c,v 1.43 2001/10/06 16:33:03 drh Exp $
*/
#include "sqliteInt.h"
#include "os.h"
/*
** This is the callback routine for the code that initializes the
** database. Each callback contains the following information:
** database. See sqliteInit() below for additional information.
**
** Each callback contains the following information:
**
** argv[0] = "meta" or "table" or "index"
** argv[1] = table or index name or meta statement type.
@@ -34,8 +36,9 @@ static int sqliteOpenCb(void *pDb, int argc, char **argv, char **azColName){
Parse sParse;
int nErr = 0;
/* TODO: Do some validity checks on all fields. In particular,
** make sure fields do not contain NULLs. */
/* TODO: Do some validity checks on all fields. In particular,
** make sure fields do not contain NULLs. Otherwise we might core
** when attempting to initialize from a corrupt database file. */
assert( argc==4 );
switch( argv[0][0] ){
@@ -51,12 +54,23 @@ static int sqliteOpenCb(void *pDb, int argc, char **argv, char **azColName){
case 'i':
case 't': { /* CREATE TABLE and CREATE INDEX statements */
if( argv[3] && argv[3][0] ){
/* Call the parser to process a CREATE TABLE or CREATE INDEX statement.
** But because sParse.initFlag is set to 1, no VDBE code is generated
** or executed. All the parser does is build the internal data
** structures that describe the table or index.
*/
memset(&sParse, 0, sizeof(sParse));
sParse.db = db;
sParse.initFlag = 1;
sParse.newTnum = atoi(argv[2]);
nErr = sqliteRunParser(&sParse, argv[3], 0);
}else{
/* If the SQL column is blank it means this is an index that
** was created to be the PRIMARY KEY or to fulfill a UNIQUE
** constraint or a CREATE TABLE. The index should have already
** been created when we processed the CREATE TABLE. All we have
** to do here is record the root page.
*/
Index *pIndex = sqliteFindIndex(db, argv[1]);
if( pIndex==0 || pIndex->tnum!=0 ){
nErr++;
@@ -123,9 +137,12 @@ static int sqliteInit(sqlite *db, char **pzErrMsg){
** The "tbl_name" is the name of the associated table. For tables,
** the tbl_name column is always the same as name. For indices, the
** tbl_name column contains the name of the table that the index
** indexes. Finally, the "sql" column contains the complete text of
** the CREATE TABLE or CREATE INDEX statement that originally created
** the table or index.
** indexes. The "rootpage" column holds the number of the root page
** for the b-tree for the table or index. Finally, the "sql" column
** contains the complete text of the CREATE TABLE or CREATE INDEX
** statement that originally created the table or index. If an index
** was created to fulfill a PRIMARY KEY or UNIQUE constraint on a table,
** then the "sql" column is NULL.
**
** If the "type" column has the value "meta", then the "sql" column
** contains extra information about the database, such as the
@@ -175,7 +192,7 @@ static int sqliteInit(sqlite *db, char **pzErrMsg){
{ OP_Goto, 0, 24, 0},
{ OP_String, 0, 0, "meta"}, /* 34 */
{ OP_String, 0, 0, "schema-cookie"},
{ OP_Null, 0, 0, 0},
{ OP_String, 0, 0, 0},
{ OP_ReadCookie,0,0, 0},
{ OP_Callback, 4, 0, 0},
{ OP_Close, 0, 0, 0},
@@ -183,7 +200,7 @@ static int sqliteInit(sqlite *db, char **pzErrMsg){
};
/* Create a virtual machine to run the initialization program. Run
** the program. The delete the virtual machine.
** the program. Then delete the virtual machine.
*/
vdbe = sqliteVdbeCreate(db);
if( vdbe==0 ){