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Further logic simplifications that flow out of the omission of the column cache.

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FossilOrigin-Name: 7d9072b027cc28dd8ecf5e2686d821017997445c15124eebe2839984622af4db
This commit is contained in:
drh
2018-08-04 15:53:55 +00:00
parent 38ee2d9197
commit 8c60719132
8 changed files with 22 additions and 39 deletions
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17
src/expr.c
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@@ -3238,12 +3238,7 @@ void sqlite3ExprCodeGetColumnOfTable(
/*
** Generate code that will extract the iColumn-th column from
** table pTab and store the column value in a register.
**
** An effort is made to store the column value in register iReg. This
** is not garanteeed for GetColumn() - the result can be stored in
** any register. But the result is guaranteed to land in register iReg
** for GetColumnToReg().
** table pTab and store the column value in register iReg.
**
** There must be an open cursor to pTab in iTable when this routine
** is called. If iColumn<0 then code is generated that extracts the rowid.
@@ -3264,16 +3259,6 @@ int sqlite3ExprCodeGetColumn(
}
return iReg;
}
void sqlite3ExprCodeGetColumnToReg(
Parse *pParse, /* Parsing and code generating context */
Table *pTab, /* Description of the table we are reading from */
int iColumn, /* Index of the table column */
int iTable, /* The cursor pointing to the table */
int iReg /* Store results here */
){
int r1 = sqlite3ExprCodeGetColumn(pParse, pTab, iColumn, iTable, iReg, 0);
if( r1!=iReg ) sqlite3VdbeAddOp2(pParse->pVdbe, OP_SCopy, r1, iReg);
}
/*
** Generate code to move content from registers iFrom...iFrom+nReg-1