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Remove an unused #define from whereInt.h. Add comments describing the new sqlite3BtreeCursor() flags.

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FossilOrigin-Name: 4c0ba8be43bb7c7100456bd8cd6921c164be31e1
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dan
2015-10-23 11:50:23 +00:00
parent fd261ec67e
commit 2b4e95226c
4 changed files with 20 additions and 14 deletions
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14
src/btree.h
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@@ -167,9 +167,19 @@ int sqlite3BtreeNewDb(Btree *p);
/*
** Flags passed as the third argument to sqlite3BtreeCursor().
**
** For read-only cursors the wrFlag argument is always zero. For read-write
** cursors it may be set to either (BTREE_WRCSR|BTREE_FORDELETE) or
** (BTREE_WRCSR). If the BTREE_FORDELETE flag is set, then the cursor will
** only be used by SQLite for the following:
**
** * to seek to and delete specific entries, and/or
**
** * to read values that will be used to create keys that other
** BTREE_FORDELETE cursors will seek to and delete.
*/
#define BTREE_WRCSR 0x00000004 /* read-write cursor */
#define BTREE_FORDELETE 0x00000008 /* Cursor is for seek/delete only */
#define BTREE_WRCSR 0x00000004 /* read-write cursor */
#define BTREE_FORDELETE 0x00000008 /* Cursor is for seek/delete only */
int sqlite3BtreeCursor(
Btree*, /* BTree containing table to open */