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Overview
| Comment: | Remove an unused #define from whereInt.h. Add comments describing the new sqlite3BtreeCursor() flags. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | btree-fordelete-flag |
| Files: | files | file ages | folders |
| SHA1: |
4c0ba8be43bb7c7100456bd8cd6921c1 |
| User & Date: | dan 2015-10-23 11:50:23 |
Context
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2015-10-26
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| 17:50 | Provide the BTREE_FORDELETE flag to sqlite3BtreeCursor() if the cursor will be used only for deletions and seeking. check-in: 871b1c78 user: drh tags: trunk | |
| 16:31 | Test that the binary record "0x01 0x00" is interpreted by OP_Column as a vector of NULL (or default) values. check-in: 5bdc3c82 user: dan tags: btree-fordelete-flag | |
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2015-10-23
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| 11:50 | Remove an unused #define from whereInt.h. Add comments describing the new sqlite3BtreeCursor() flags. check-in: 4c0ba8be user: dan tags: btree-fordelete-flag | |
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2015-10-22
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| 20:54 | Modifications to pass a flag to internal routine sqlite3BtreeCursor() when a cursor that is used solely for deleting b-tree entries, or for obtaining the components of keys to delete from other b-trees, is opened. check-in: cdc92919 user: dan tags: btree-fordelete-flag | |
Changes
Changes to src/btree.h.
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** */ #define BTREE_BULKLOAD 0x00000001 /* Used to full index in sorted order */ #define BTREE_SEEK_EQ 0x00000002 /* EQ seeks only - no range seeks */ /* ** Flags passed as the third argument to sqlite3BtreeCursor(). */ #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 */ int iTable, /* Index of root page */ int wrFlag, /* 1 for writing. 0 for read-only */ struct KeyInfo*, /* First argument to compare function */ BtCursor *pCursor /* Space to write cursor structure */ |
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** */ #define BTREE_BULKLOAD 0x00000001 /* Used to full index in sorted order */ #define BTREE_SEEK_EQ 0x00000002 /* EQ seeks only - no range seeks */ /* ** 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 */ int sqlite3BtreeCursor( Btree*, /* BTree containing table to open */ int iTable, /* Index of root page */ int wrFlag, /* 1 for writing. 0 for read-only */ struct KeyInfo*, /* First argument to compare function */ BtCursor *pCursor /* Space to write cursor structure */ |
Changes to src/whereInt.h.
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#define WHERE_IN_ABLE 0x00000800 /* Able to support an IN operator */
#define WHERE_ONEROW 0x00001000 /* Selects no more than one row */
#define WHERE_MULTI_OR 0x00002000 /* OR using multiple indices */
#define WHERE_AUTO_INDEX 0x00004000 /* Uses an ephemeral index */
#define WHERE_SKIPSCAN 0x00008000 /* Uses the skip-scan algorithm */
#define WHERE_UNQ_WANTED 0x00010000 /* WHERE_ONEROW would have been helpful*/
#define WHERE_PARTIALIDX 0x00020000 /* The automatic index is partial */
#define WHERE_FORDELETE 0x00040000 /* Table cursor is "for-delete" */
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#define WHERE_IN_ABLE 0x00000800 /* Able to support an IN operator */ #define WHERE_ONEROW 0x00001000 /* Selects no more than one row */ #define WHERE_MULTI_OR 0x00002000 /* OR using multiple indices */ #define WHERE_AUTO_INDEX 0x00004000 /* Uses an ephemeral index */ #define WHERE_SKIPSCAN 0x00008000 /* Uses the skip-scan algorithm */ #define WHERE_UNQ_WANTED 0x00010000 /* WHERE_ONEROW would have been helpful*/ #define WHERE_PARTIALIDX 0x00020000 /* The automatic index is partial */ |