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Ensure that the "PRAGMA schema_version" command causes the schema to be

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reparsed and reloaded.

FossilOrigin-Name: 27d4a9a7b530c77a5b2593d1a5232b10746da9906f8d12890de7a8fbd7270256
This commit is contained in:
drh
2020-07-01 16:19:14 +00:00
parent fa4b0d4453
commit e3863b5176
5 changed files with 36 additions and 10 deletions
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9
src/vdbe.c
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@@ -3629,7 +3629,7 @@ case OP_ReadCookie: { /* out2 */
break;
}
/* Opcode: SetCookie P1 P2 P3 * *
/* Opcode: SetCookie P1 P2 P3 * P5
**
** Write the integer value P3 into cookie number P2 of database P1.
** P2==1 is the schema version. P2==2 is the database format.
@@ -3638,6 +3638,11 @@ case OP_ReadCookie: { /* out2 */
** database file used to store temporary tables.
**
** A transaction must be started before executing this opcode.
**
** If P2 is the SCHEMA_VERSION cookie (cookie number 1) then the internal
** schema version is set to P3-P5. The "PRAGMA schema_version=N" statement
** has P5 set to 1, so that the internal schema version will be different
** from the database schema version, resulting in a schema reset.
*/
case OP_SetCookie: {
Db *pDb;
@@ -3654,7 +3659,7 @@ case OP_SetCookie: {
rc = sqlite3BtreeUpdateMeta(pDb->pBt, pOp->p2, pOp->p3);
if( pOp->p2==BTREE_SCHEMA_VERSION ){
/* When the schema cookie changes, record the new cookie internally */
pDb->pSchema->schema_cookie = pOp->p3;
pDb->pSchema->schema_cookie = pOp->p3 - pOp->p5;
db->mDbFlags |= DBFLAG_SchemaChange;
}else if( pOp->p2==BTREE_FILE_FORMAT ){
/* Record changes in the file format */