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Change the sqlite3OpenTable() utility to open the PRIMARY KEY index when

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reading a WITHOUT ROWID table.

FossilOrigin-Name: 247f389930aededaa54ecb792748aa8d0ad6d57b
This commit is contained in:
drh
2013-10-23 23:37:02 +00:00
parent 4415628a4a
commit dd9930ef20
5 changed files with 27 additions and 23 deletions
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19
src/insert.c
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@@ -15,7 +15,13 @@
#include "sqliteInt.h"
/*
** Generate code that will open a table for reading.
** Generate code that will open table pTab for reading or writing
** on cursor iCur.
**
** Always acquire a table lock. Always do the open for rowid tables.
** For WITHOUT ROWID tables, only do read opens, and then open the
** PRIMARY KEY index, not the main table, since the main table doesn't
** exist.
*/
void sqlite3OpenTable(
Parse *p, /* Generate code into this VDBE */
@@ -30,8 +36,15 @@ void sqlite3OpenTable(
assert( opcode==OP_OpenWrite || opcode==OP_OpenRead );
sqlite3TableLock(p, iDb, pTab->tnum, (opcode==OP_OpenWrite)?1:0, pTab->zName);
if( HasRowid(pTab) ){
sqlite3VdbeAddOp3(v, opcode, iCur, pTab->tnum, iDb);
sqlite3VdbeChangeP4(v, -1, SQLITE_INT_TO_PTR(pTab->nCol), P4_INT32);
sqlite3VdbeAddOp4(v, opcode, iCur, pTab->tnum, iDb,
SQLITE_INT_TO_PTR(pTab->nCol), P4_INT32);
VdbeComment((v, "%s", pTab->zName));
}else if( opcode==OP_OpenRead ){
Index *pPk = sqlite3PrimaryKeyIndex(pTab);
assert( pPk!=0 );
assert( pPk->tnum=pTab->tnum );
sqlite3VdbeAddOp4(v, opcode, iCur, pPk->tnum, iDb,
(char*)sqlite3IndexKeyinfo(p, pPk), P4_KEYINFO_HANDOFF);
VdbeComment((v, "%s", pTab->zName));
}
}