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Add a test case for ORDER BY using the echo module. (CVS 3237)

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FossilOrigin-Name: f459f034f659a4c418aa1bc72135cc93d04565df
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danielk1977
2006-06-14 07:41:31 +00:00
parent 9da9d471f5
commit 47d0809401
4 changed files with 80 additions and 10 deletions
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22
src/test8.c
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@@ -13,7 +13,7 @@
** is not included in the SQLite library. It is used for automated
** testing of the SQLite library.
**
** $Id: test8.c,v 1.13 2006/06/14 06:58:16 danielk1977 Exp $
** $Id: test8.c,v 1.14 2006/06/14 07:41:32 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "tcl.h"
@@ -431,6 +431,26 @@ static int echoBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){
pUsage->omit = 1;
}
}
/* If there is only one term in the ORDER BY clause, and it is
** on a column that this virtual table has an index for, then consume
** the ORDER BY clause.
*/
if( pIdxInfo->nOrderBy==1 && pVtab->aIndex[pIdxInfo->aOrderBy->iColumn] ){
char *zCol = pVtab->aCol[pIdxInfo->aOrderBy->iColumn];
char *zDir = pIdxInfo->aOrderBy->desc?"DESC":"ASC";
zNew = sqlite3_mprintf("%s ORDER BY %s %s", zQuery, zCol, zDir);
sqlite3_free(zQuery);
zQuery = zNew;
pIdxInfo->orderByConsumed = 1;
}
const int nOrderBy; /* Number of terms in the ORDER BY clause */
const struct sqlite3_index_orderby {
int iColumn; /* Column number */
unsigned char desc; /* True for DESC. False for ASC. */
} *const aOrderBy; /* The ORDER BY clause */
appendToEchoModule(pVtab->interp, "xBestIndex");;
appendToEchoModule(pVtab->interp, zQuery);