database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-11-14 00:22:38 +03:00
Code Activity

Begin reengineering the EXPLAIN QUERY PLAN function to provide more

Browse Source 
intuitive output.

FossilOrigin-Name: 70b48a7972dfbb44af3ccd8ccd830e984bec88d80a78b3566a5de86a16e7fc14
This commit is contained in:
drh
2018-05-02 00:33:43 +00:00
parent 8c2e6c5fe0
commit e2ca99c907
9 changed files with 151 additions and 147 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/wherecode.c
View File

@@ -134,7 +134,6 @@ int sqlite3WhereExplainOneScan(
struct SrcList_item *pItem = &pTabList->a[pLevel->iFrom];
Vdbe *v = pParse->pVdbe; /* VM being constructed */
sqlite3 *db = pParse->db; /* Database handle */
int iId = pParse->iSelectId; /* Select id (left-most output column) */
int isSearch; /* True for a SEARCH. False for SCAN. */
WhereLoop *pLoop; /* The controlling WhereLoop object */
u32 flags; /* Flags that describe this loop */
@@ -153,7 +152,7 @@ int sqlite3WhereExplainOneScan(
sqlite3StrAccumInit(&str, db, zBuf, sizeof(zBuf), SQLITE_MAX_LENGTH);
sqlite3StrAccumAppendAll(&str, isSearch ? "SEARCH" : "SCAN");
if( pItem->pSelect ){
sqlite3XPrintf(&str, " SUBQUERY %d", pItem->iSelectId);
sqlite3XPrintf(&str, " SUBQUERY %p", pItem->pSelect);
}else{
sqlite3XPrintf(&str, " TABLE %s", pItem->zName);
}
@@ -214,7 +213,8 @@ int sqlite3WhereExplainOneScan(
}
#endif
zMsg = sqlite3StrAccumFinish(&str);
ret = sqlite3VdbeAddOp4(v, OP_Explain, iId, iLevel, iFrom, zMsg,P4_DYNAMIC);
ret = sqlite3VdbeAddOp4(v, OP_Explain, sqlite3VdbeCurrentAddr(v),
pParse->addrExplain, 0, zMsg,P4_DYNAMIC);
}
return ret;
}