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Overview
| Comment: | Fix the header comment on the OP_Compare operator. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | ticket-71e333e7 |
| Files: | files | file ages | folders |
| SHA1: |
2722f4074fd8d189b7bd2b9107484b66 |
| User & Date: | drh 2012-12-08 13:26:23 |
Context
|
2012-12-08
| ||
| 14:16 | Make sure WHERE clause constraints A=B and B=A work the same even with COLLATE clauses. (check-in: b3f53668 user: drh tags: ticket-71e333e7) | |
| 13:26 | Fix the header comment on the OP_Compare operator. (check-in: 2722f407 user: drh tags: ticket-71e333e7) | |
| 04:10 | Duplicating check constraint expressions prior to code generation is no longer required, and so it is removed. (check-in: 1a9db8dc user: drh tags: ticket-71e333e7) | |
Changes
Changes to src/vdbe.c.
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}
/* Opcode: Compare P1 P2 P3 P4 P5
**
** Compare two vectors of registers in reg(P1)..reg(P1+P3-1) (call this
** vector "A") and in reg(P2)..reg(P2+P3-1) ("B"). Save the result of
** the comparison for use by the next OP_Jump instruct.
**
** P4 is a KeyInfo structure that defines collating sequences and sort
** orders for the comparison. The permutation applies to registers
** only. The KeyInfo elements are used sequentially.
**
** The comparison is a sort comparison, so NULLs compare equal,
** NULLs are less than numbers, numbers are less than strings,
|
> > > > > |
1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 |
}
/* Opcode: Compare P1 P2 P3 P4 P5
**
** Compare two vectors of registers in reg(P1)..reg(P1+P3-1) (call this
** vector "A") and in reg(P2)..reg(P2+P3-1) ("B"). Save the result of
** the comparison for use by the next OP_Jump instruct.
**
** If P5 has the OPFLAG_PERMUTE bit set, then the order of comparison is
** determined by the most recent OP_Permutation operator. If the
** OPFLAG_PERMUTE bit is clear, then register are compared in sequential
** order.
**
** P4 is a KeyInfo structure that defines collating sequences and sort
** orders for the comparison. The permutation applies to registers
** only. The KeyInfo elements are used sequentially.
**
** The comparison is a sort comparison, so NULLs compare equal,
** NULLs are less than numbers, numbers are less than strings,
|