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Add support for "ROWS BETWEEN <expr> PRECEDING AND <expr> FOLLOWING" window

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FossilOrigin-Name: 3a203660f1e4da3b8d2d605c494f4843f6e00752f28042b49e11d7d6550dd406
This commit is contained in:
dan
2018-05-23 20:55:37 +00:00
parent 72779425b5
commit c3a20c19a8
11 changed files with 452 additions and 137 deletions
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7
src/btree.c
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@@ -5176,6 +5176,13 @@ int sqlite3BtreeFirst(BtCursor *pCur, int *pRes){
return rc;
}
void sqlite3BtreeSkipNext(BtCursor *pCur){
if( pCur->eState==CURSOR_VALID ){
pCur->eState = CURSOR_SKIPNEXT;
pCur->skipNext = 1;
}
}
/* Move the cursor to the last entry in the table. Return SQLITE_OK
** on success. Set *pRes to 0 if the cursor actually points to something
** or set *pRes to 1 if the table is empty.