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| Comment: | Disable automatic indices on recursive CTE references. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | common-table-expr |
| Files: | files | file ages | folders |
| SHA1: |
28aa6db8c878655255dbfb618f8d65be |
| User & Date: | dan 2014-01-15 18:21:41 |
|
2014-01-15
| ||
| 18:23 | Add a header comment to the searchWith() routine. (check-in: d9ae0f5d user: drh tags: common-table-expr) | |
| 18:21 | Disable automatic indices on recursive CTE references. (check-in: 28aa6db8 user: dan tags: common-table-expr) | |
| 18:12 | When resolving names, consider a reference to a recursive CTE column as equivalent to a reference to the outermost name-context. This ensures that correlated sub-queries are correctly identified as such. (check-in: 61be2da0 user: dan tags: common-table-expr) | |
Changes to src/where.c.
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if( !pBuilder->pOrSet
&& (pWInfo->pParse->db->flags & SQLITE_AutoIndex)!=0
&& pSrc->pIndex==0
&& !pSrc->viaCoroutine
&& !pSrc->notIndexed
&& HasRowid(pTab)
&& !pSrc->isCorrelated
){
/* Generate auto-index WhereLoops */
WhereTerm *pTerm;
WhereTerm *pWCEnd = pWC->a + pWC->nTerm;
for(pTerm=pWC->a; rc==SQLITE_OK && pTerm<pWCEnd; pTerm++){
if( pTerm->prereqRight & pNew->maskSelf ) continue;
if( termCanDriveIndex(pTerm, pSrc, 0) ){
|
> |
4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 |
if( !pBuilder->pOrSet
&& (pWInfo->pParse->db->flags & SQLITE_AutoIndex)!=0
&& pSrc->pIndex==0
&& !pSrc->viaCoroutine
&& !pSrc->notIndexed
&& HasRowid(pTab)
&& !pSrc->isCorrelated
&& !pSrc->isRecursive
){
/* Generate auto-index WhereLoops */
WhereTerm *pTerm;
WhereTerm *pWCEnd = pWC->a + pWC->nTerm;
for(pTerm=pWC->a; rc==SQLITE_OK && pTerm<pWCEnd; pTerm++){
if( pTerm->prereqRight & pNew->maskSelf ) continue;
if( termCanDriveIndex(pTerm, pSrc, 0) ){
|
Changes to test/with1.test.
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INSERT INTO f VALUES(14, 13, 'logo.gif');
}
do_execsql_test 6.2 {
WITH flat(fid, fpath) AS (
SELECT id, '' FROM f WHERE parentid IS NULL
UNION ALL
SELECT id, fpath || '/' || name FROM f, flat WHERE +parentid=+fid
)
SELECT fpath FROM flat WHERE fpath!='' ORDER BY 1;
} {
/bin
/bin/false /bin/grep /bin/ls /bin/true
/etc
/etc/rc.d
................................................................................
/home/dan/public_html/index.html/logo.gif
}
do_execsql_test 6.3 {
WITH flat(fid, fpath) AS (
SELECT id, '' FROM f WHERE parentid IS NULL
UNION ALL
SELECT id, fpath || '/' || name FROM f, flat WHERE parentid=+fid
)
SELECT count(*) FROM flat;
} {15}
do_execsql_test 6.4 {
WITH x(i) AS (
SELECT 1
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INSERT INTO f VALUES(14, 13, 'logo.gif');
}
do_execsql_test 6.2 {
WITH flat(fid, fpath) AS (
SELECT id, '' FROM f WHERE parentid IS NULL
UNION ALL
SELECT id, fpath || '/' || name FROM f, flat WHERE parentid=fid
)
SELECT fpath FROM flat WHERE fpath!='' ORDER BY 1;
} {
/bin
/bin/false /bin/grep /bin/ls /bin/true
/etc
/etc/rc.d
................................................................................
/home/dan/public_html/index.html/logo.gif
}
do_execsql_test 6.3 {
WITH flat(fid, fpath) AS (
SELECT id, '' FROM f WHERE parentid IS NULL
UNION ALL
SELECT id, fpath || '/' || name FROM f, flat WHERE parentid=fid
)
SELECT count(*) FROM flat;
} {15}
do_execsql_test 6.4 {
WITH x(i) AS (
SELECT 1
|