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feat: improve fetch speed if no set result file #734

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Mar 22, 2024
Merged

feat: improve fetch speed if no set result file #734

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51 changes: 30 additions & 21 deletions src/benchUtil.c
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Original file line number Diff line number Diff line change
Expand Up @@ -796,38 +796,47 @@ int postProceSql(char *sqlstr, char* dbName, int precision, int iface,
return code;
}

// fetch result fo file or nothing
void fetchResult(TAOS_RES *res, threadInfo *pThreadInfo) {
TAOS_ROW row = NULL;
int num_rows = 0;
int num_fields = taos_field_count(res);
TAOS_FIELD *fields = taos_fetch_fields(res);

char *databuf = (char *)benchCalloc(1, FETCH_BUFFER_SIZE, true);

int64_t totalLen = 0;
TAOS_ROW row = NULL;
int num_fields = 0;
int64_t totalLen = 0;
TAOS_FIELD *fields = 0;
char *databuf = NULL;
bool toFile = strlen(pThreadInfo->filePath) > 0;

if(toFile) {
num_fields = taos_field_count(res);
fields = taos_fetch_fields(res);
databuf = (char *)benchCalloc(1, FETCH_BUFFER_SIZE, true);
}

// fetch the records row by row
while ((row = taos_fetch_row(res))) {
if (totalLen >= (FETCH_BUFFER_SIZE - HEAD_BUFF_LEN * 2)) {
if (strlen(pThreadInfo->filePath) > 0) {
if (toFile) {
if (totalLen >= (FETCH_BUFFER_SIZE - HEAD_BUFF_LEN * 2)) {
// buff is full
appendResultBufToFile(databuf, pThreadInfo->filePath);
totalLen = 0;
memset(databuf, 0, FETCH_BUFFER_SIZE);
}
totalLen = 0;
memset(databuf, 0, FETCH_BUFFER_SIZE);

// format row
char temp[HEAD_BUFF_LEN] = {0};
int len = taos_print_row(temp, row, fields, num_fields);
len += snprintf(temp + len, HEAD_BUFF_LEN - len, "\n");
debugPrint("query result:%s\n", temp);
memcpy(databuf + totalLen, temp, len);
totalLen += len;
}
num_rows++;
char temp[HEAD_BUFF_LEN] = {0};
int len = taos_print_row(temp, row, fields, num_fields);
len += snprintf(temp + len, HEAD_BUFF_LEN - len, "\n");
debugPrint("query result:%s\n", temp);
memcpy(databuf + totalLen, temp, len);
totalLen += len;
//if not toFile , only loop call taos_fetch_row
}

if (strlen(pThreadInfo->filePath) > 0) {
// end
if (toFile) {
appendResultBufToFile(databuf, pThreadInfo->filePath);
free(databuf);
}
free(databuf);
}

char *convertDatatypeToString(int type) {
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