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Add some support for using row value constructors in certain parts of SQL expressions. There are many bugs on this branch.

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FossilOrigin-Name: b2204215b231202aef7a218411cc2ddaecf28f35
This commit is contained in:
dan
2016-07-09 20:23:55 +00:00
parent e39cd91aea
commit 71c57db099
15 changed files with 975 additions and 118 deletions
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40
src/vdbe.c
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@@ -1958,6 +1958,7 @@ case OP_Cast: { /* in1 */
** the content of register P3 is greater than or equal to the content of
** register P1. See the Lt opcode for additional information.
*/
case OP_Cmp: /* in1, in3 */
case OP_Eq: /* same as TK_EQ, jump, in1, in3 */
case OP_Ne: /* same as TK_NE, jump, in1, in3 */
case OP_Lt: /* same as TK_LT, jump, in1, in3 */
@@ -2056,7 +2057,8 @@ case OP_Ge: { /* same as TK_GE, jump, in1, in3 */
case OP_Lt: res = res<0; break;
case OP_Le: res = res<=0; break;
case OP_Gt: res = res>0; break;
default: res = res>=0; break;
case OP_Ge: res = res>=0; break;
default: assert( pOp->opcode==OP_Cmp ); break;
}
/* Undo any changes made by applyAffinity() to the input registers. */
@@ -2072,6 +2074,7 @@ case OP_Ge: { /* same as TK_GE, jump, in1, in3 */
pOut->u.i = res;
REGISTER_TRACE(pOp->p2, pOut);
}else{
assert( pOp->opcode!=OP_Cmp );
VdbeBranchTaken(res!=0, (pOp->p5 & SQLITE_NULLEQ)?2:3);
if( res ){
goto jump_to_p2;
@@ -3867,7 +3870,42 @@ seek_not_found:
}
break;
}
/* Opcode: CmpTest P1 P2 P3 * *
**
** P2 is a jump destination. Register P1 is guaranteed to contain either
** an integer value or a NULL. The jump is taken if P1 contains any value
** other than 0 (i.e. NULL does cause a jump).
**
** If P1 is not NULL, its value is modified to integer value 0 or 1
** according to the value of the P3 operand:
**
** P3 modification
** --------------------------
** OP_Lt (P1 = (P1 < 0))
** OP_Le (P1 = (P1 <= 0))
** OP_Gt (P1 = (P1 > 0))
** OP_Ge (P1 = (P1 >= 0))
*/
case OP_CmpTest: { /* in1, jump */
int bJump;
pIn1 = &aMem[pOp->p1];
if( (pIn1->flags & MEM_Int) ){
bJump = (pIn1->u.i!=0);
switch( pOp->p3 ){
case OP_Lt: pIn1->u.i = (pIn1->u.i < 0); break;
case OP_Le: pIn1->u.i = (pIn1->u.i <= 0); break;
case OP_Gt: pIn1->u.i = (pIn1->u.i > 0); break;
default: assert( pOp->p3==OP_Ge ); pIn1->u.i = (pIn1->u.i >= 0); break;
}
}else{
bJump = 1;
}
if( bJump ) goto jump_to_p2;
break;
}
/* Opcode: Found P1 P2 P3 P4 *
** Synopsis: key=r[P3@P4]