setop/sqlite-parquet-vtable
1
0
Fork 0
mirror of https://github.com/cldellow/sqlite-parquet-vtable.git synced 2025-09-14 22:39:59 +00:00
Code Releases Activity

Code to pretty print constraints

Browse Source
This commit is contained in:
Colin Dellow
2018-03-10 10:59:53 -05:00
parent 2bc054a2cf
commit 210f322a1c
5 changed files with 64 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

71
parquet/parquet.cc
View File

@@ -277,6 +277,61 @@ static int parquetEof(sqlite3_vtab_cursor *cur){
return 0;
}
void debugConstraints(sqlite3_index_info *pIdxInfo, ParquetTable *table, sqlite3_value** argv) {
for(int i = 0; i < pIdxInfo->nConstraint; i++) {
std::string valueStr = "?";
if(argv != NULL) {
int type = sqlite3_value_type(argv[i]);
switch(type) {
case SQLITE_INTEGER:
{
sqlite3_int64 rv = sqlite3_value_int64(argv[i]);
std::ostringstream ss;
ss << rv;
valueStr = ss.str();
break;
}
case SQLITE_FLOAT:
{
double rv = sqlite3_value_double(argv[i]);
std::ostringstream ss;
ss << rv;
valueStr = ss.str();
break;
}
case SQLITE_TEXT:
{
const unsigned char* rv = sqlite3_value_text(argv[i]);
std::ostringstream ss;
ss << "'" << rv << "'";
valueStr = ss.str();
break;
}
case SQLITE_BLOB:
{
int sizeBytes = sqlite3_value_bytes(argv[i]);
std::ostringstream ss;
ss << "'..." << sizeBytes << "-byte blob...'";
valueStr = ss.str();
break;
}
case SQLITE_NULL:
{
valueStr = "NULL";
break;
}
}
}
printf(" constraint %d: col %s %s %s, usable %d\n",
i,
table->columnName(pIdxInfo->aConstraint[i].iColumn).data(),
opName(pIdxInfo->aConstraint[i].op),
valueStr.data(),
pIdxInfo->aConstraint[i].usable);
}
}
/*
** Only a full table scan is supported. So xFilter simply rewinds to
** the beginning.
@@ -288,10 +343,9 @@ static int parquetFilter(
int argc,
sqlite3_value **argv
){
printf("xFilter: idxNum=%d, idxStr=%lu, argc=%d\n", idxNum, (long unsigned int)idxStr, argc);
const unsigned char* needle = sqlite3_value_text(argv[0]);
printf(" ...%s\n", needle);
ParquetCursor* cursor = ((sqlite3_vtab_cursor_parquet*)cur)->cursor;
printf("xFilter: idxNum=%d, idxStr=%lu, argc=%d\n", idxNum, (long unsigned int)idxStr, argc);
debugConstraints((sqlite3_index_info*)idxStr, cursor->getTable(), argv);
cursor->reset();
return parquetNext(cur);
}
@@ -307,16 +361,7 @@ static int parquetBestIndex(
ParquetTable* table = ((sqlite3_vtab_parquet*)tab)->table;
printf("xBestIndex: nConstraint=%d, nOrderBy=%d\n", pIdxInfo->nConstraint, pIdxInfo->nOrderBy);
// Duplicate pIdxInfo and stash it in pIdxInfo->idxStr.
for(int i = 0; i < pIdxInfo->nConstraint; i++) {
printf(" constraint %d: col %d[%s], op %d[%s], usable %d\n",
i,
pIdxInfo->aConstraint[i].iColumn,
table->columnName(pIdxInfo->aConstraint[i].iColumn).data(),
pIdxInfo->aConstraint[i].op,
opName(pIdxInfo->aConstraint[i].op),
pIdxInfo->aConstraint[i].usable);
}
debugConstraints(pIdxInfo, table, NULL);
if((pIdxInfo->nConstraint == 0 && pIdxInfo->nOrderBy == 0)) {
pIdxInfo->estimatedCost = 1000000000000;