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Overview
| Comment: | Have the ALTER TABLE code handle the case where an entire expression that includes a sub-select is excluded from a view, trigger or index. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
f2c8179f3c0b77f10da3f9b0771db4de |
| User & Date: | dan 2019-06-11 12:03:10 |
Context
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2019-06-11
| ||
| 16:06 | Off-by-one error in the CAST to NUMERIC logic. check-in: 25b8963020 user: drh tags: trunk | |
| 12:03 | Have the ALTER TABLE code handle the case where an entire expression that includes a sub-select is excluded from a view, trigger or index. check-in: f2c8179f3c user: dan tags: trunk | |
| 10:43 | Add the new sqlite3ExprUnmapAndDelete() function and use it in place of separate calls to sqlite3RenameExprUnmap() and sqlite3ExprDelete(). check-in: 36ea13e0a8 user: drh tags: trunk | |
Changes
Changes to src/alter.c.
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** Walker callback used by sqlite3RenameExprUnmap().
*/
static int renameUnmapExprCb(Walker *pWalker, Expr *pExpr){
Parse *pParse = pWalker->pParse;
sqlite3RenameTokenRemap(pParse, 0, (void*)pExpr);
return WRC_Continue;
}
/*
** Remove all nodes that are part of expression pExpr from the rename list.
*/
void sqlite3RenameExprUnmap(Parse *pParse, Expr *pExpr){
Walker sWalker;
memset(&sWalker, 0, sizeof(Walker));
sWalker.pParse = pParse;
sWalker.xExprCallback = renameUnmapExprCb;
sqlite3WalkExpr(&sWalker, pExpr);
}
/*
** Remove all nodes that are part of expression-list pEList from the
** rename list.
*/
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** Walker callback used by sqlite3RenameExprUnmap().
*/
static int renameUnmapExprCb(Walker *pWalker, Expr *pExpr){
Parse *pParse = pWalker->pParse;
sqlite3RenameTokenRemap(pParse, 0, (void*)pExpr);
return WRC_Continue;
}
/*
** Walker callback used by sqlite3RenameExprUnmap().
*/
static int renameUnmapSelectCb(Walker *pWalker, Select *p){
if( p->pSrc ){
Parse *pParse = pWalker->pParse;
int i;
for(i=0; i<p->pSrc->nSrc; i++){
sqlite3RenameTokenRemap(pParse, 0, (void*)p->pSrc->a[0].zName);
}
}
return WRC_Continue;
}
/*
** Remove all nodes that are part of expression pExpr from the rename list.
*/
void sqlite3RenameExprUnmap(Parse *pParse, Expr *pExpr){
Walker sWalker;
memset(&sWalker, 0, sizeof(Walker));
sWalker.pParse = pParse;
sWalker.xExprCallback = renameUnmapExprCb;
sWalker.xSelectCallback = renameUnmapSelectCb;
sqlite3WalkExpr(&sWalker, pExpr);
}
/*
** Remove all nodes that are part of expression-list pEList from the
** rename list.
*/
|
Changes to test/altertab3.test.
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do_execsql_test 8.1 {
ALTER TABLE t0 RENAME TO t1;
SELECT sql FROM sqlite_master;
} {
{CREATE TABLE "t1"(c0)}
{CREATE INDEX i0 ON "t1"('1' IN ())}
}
do_execsql_test 8.2.1 {
CREATE TABLE t2 (c0);
CREATE INDEX i2 ON t2((LIKELIHOOD(c0, 100) IN ()));
ALTER TABLE t2 RENAME COLUMN c0 TO c1;
}
do_execsql_test 8.2.2 {
SELECT sql FROM sqlite_master WHERE tbl_name = 't2';
................................................................................
}
do_test 8.2.3 {
sqlite3 db2 test.db
db2 eval { INSERT INTO t2 VALUES (1), (2), (3) }
db close
} {}
finish_test
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do_execsql_test 8.1 {
ALTER TABLE t0 RENAME TO t1;
SELECT sql FROM sqlite_master;
} {
{CREATE TABLE "t1"(c0)}
{CREATE INDEX i0 ON "t1"('1' IN ())}
}
do_execsql_test 8.2.1 {
CREATE TABLE t2 (c0);
CREATE INDEX i2 ON t2((LIKELIHOOD(c0, 100) IN ()));
ALTER TABLE t2 RENAME COLUMN c0 TO c1;
}
do_execsql_test 8.2.2 {
SELECT sql FROM sqlite_master WHERE tbl_name = 't2';
................................................................................
}
do_test 8.2.3 {
sqlite3 db2 test.db
db2 eval { INSERT INTO t2 VALUES (1), (2), (3) }
db close
} {}
#-------------------------------------------------------------------------
reset_db
do_execsql_test 9.1 {
CREATE TABLE t1(a,b,c);
CREATE TRIGGER AFTER INSERT ON t1 WHEN new.a NOT NULL BEGIN
SELECT true WHERE (SELECT a, b FROM (t1)) IN ();
END;
}
do_execsql_test 9.2 {
ALTER TABLE t1 RENAME TO t1x;
}
finish_test
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