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Fix problem with window functions min() and max() when used with a PARTITION

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clause and a frame starting point other than "UNBOUNDED PRECEDING".

FossilOrigin-Name: 43eb1e75a4d7ac0973ed8589bbaf379c24cdc8eacc4e613610d2d4c24d385dc1
This commit is contained in:
dan
2018-06-14 19:06:36 +00:00
parent 09882a75c4
commit 9a94722d48
12 changed files with 916 additions and 39 deletions
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8
src/sqliteInt.h
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@@ -1685,7 +1685,7 @@ struct FuncDestructor {
#define SQLITE_FUNC_AFFINITY 0x4000 /* Built-in affinity() function */
#define SQLITE_FUNC_OFFSET 0x8000 /* Built-in sqlite_offset() function */
#define SQLITE_FUNC_WINDOW 0x10000 /* Built-in window-only function */
#define SQLITE_FUNC_WINDOW_SIZE 0x20000
#define SQLITE_FUNC_WINDOW_SIZE 0x20000 /* Requires partition size as arg. */
/*
** The following three macros, FUNCTION(), LIKEFUNC() and AGGREGATE() are
@@ -3485,6 +3485,10 @@ struct TreeView {
};
#endif /* SQLITE_DEBUG */
/*
** Object used to encode the OVER() clause attached to a window-function
** invocation. And some fields used while generating VM code for the same.
*/
struct Window {
char *zName; /* Name of window (may be NULL) */
ExprList *pPartition; /* PARTITION BY clause */
@@ -3524,6 +3528,7 @@ int sqlite3WindowRewrite(Parse*, Select*);
int sqlite3ExpandSubquery(Parse*, struct SrcList_item*);
void sqlite3WindowUpdate(Parse*, Window*, Window*, FuncDef*);
Window *sqlite3WindowDup(sqlite3 *db, Expr *pOwner, Window *p);
void sqlite3WindowFunctions(void);
/*
** Assuming zIn points to the first byte of a UTF-8 character,
@@ -4198,7 +4203,6 @@ extern sqlite3_uint64 sqlite3NProfileCnt;
void sqlite3RootPageMoved(sqlite3*, int, int, int);
void sqlite3Reindex(Parse*, Token*, Token*);
void sqlite3AlterFunctions(void);
void sqlite3WindowFunctions(void);
void sqlite3AlterRenameTable(Parse*, SrcList*, Token*);
int sqlite3GetToken(const unsigned char *, int *);
void sqlite3NestedParse(Parse*, const char*, ...);