[TS-821]<fix>: fixed bug that 'like' worked imporperly in Windows

src/query/src/qFilterfunc.c

@@ -183,7 +183,17 @@ bool likeOperator(SColumnFilterElem *pFilter, const char *minval, const char *ma
     return patternMatch((char *)pFilter->filterInfo.pz, varDataVal(minval), varDataLen(minval), &info) == TSDB_PATTERN_MATCH;
   } else if (type == TSDB_DATA_TYPE_NCHAR) {
     SPatternCompareInfo info = PATTERN_COMPARE_INFO_INITIALIZER;
-    return WCSPatternMatch((wchar_t*)pFilter->filterInfo.pz, varDataVal(minval), varDataLen(minval)/TSDB_NCHAR_SIZE, &info) == TSDB_PATTERN_MATCH;
+	size_t size = (size_t)(pFilter->filterInfo.len / TSDB_NCHAR_SIZE);
+	void *pz = calloc(size + 1, TSDB_NCHAR_SIZE);
+	if (pz == NULL) {
+		return false;
+	}
+
+	memcpy(pz, (void *)pFilter->filterInfo.pz, size * TSDB_NCHAR_SIZE);
+	int32_t ret = WCSPatternMatch((wchar_t *)pz, size, varDataVal(minval), varDataLen(minval) / TSDB_NCHAR_SIZE, &info, true);
+	free(pz);
+
+	return ret == TSDB_PATTERN_MATCH;
   } else {
     return false;
   }

src/util/inc/tcompare.h

@@ -44,7 +44,7 @@ typedef struct SPatternCompareInfo {
 
 int patternMatch(const char *pattern, const char *str, size_t size, const SPatternCompareInfo *pInfo);
 
-int WCSPatternMatch(const wchar_t *pattern, const wchar_t *str, size_t size, const SPatternCompareInfo *pInfo);
+int WCSPatternMatch(wchar_t *pattern, size_t paSize, wchar_t *str, size_t size, const SPatternCompareInfo *pInfo, const bool preProc);
 
 int32_t doCompare(const char* a, const char* b, int32_t type, size_t size);
 

src/util/src/tcompare.c

@@ -321,7 +321,7 @@ int patternMatch(const char *patterStr, const char *str, size_t size, const SPat
   return (str[j] == 0 || j >= size) ? TSDB_PATTERN_MATCH : TSDB_PATTERN_NOMATCH;
 }
 
-int WCSPatternMatch(const wchar_t *patterStr, const wchar_t *str, size_t size, const SPatternCompareInfo *pInfo) {
+int WCSPatternMatch(wchar_t *patterStr, size_t paSize, wchar_t *str, size_t size, const SPatternCompareInfo *pInfo, const bool preProc) {
   wchar_t c, c1;
   wchar_t matchOne = L'_';  // "_"
   wchar_t matchAll = L'%';  // "%"
@@ -329,14 +329,61 @@ int WCSPatternMatch(const wchar_t *patterStr, const wchar_t *str, size_t size, c
   int32_t i = 0;
   int32_t j = 0;
 
+#ifdef WINDOWS
+  if (preProc) {
+    size_t  realPaSize = paSize * sizeof(wchar_t);
+    size_t  realSize = size * sizeof(wchar_t);
+    size_t  cur = 0;
+
+    while (i < realPaSize) {
+      if (patterStr[i] == 0) {
+        i++;
+        continue;
+      }
+
+      if (cur != i) {
+        patterStr[++cur] = patterStr[i];
+      }
+
+      i++;
+    }
+
+    if (cur < realPaSize) {
+      patterStr[++cur] = 0;
+    }
+
+    cur = 0;
+    i = 0;
+
+    while (i < realSize) {
+      if (str[i] == 0) {
+        i++;
+        continue;
+      }
+
+      if (cur != i) {
+        str[++cur] = str[i];
+      }
+
+      i++;
+    }
+
+    if (cur < realSize) {
+      str[++cur] = 0;
+    }
+
+    i = 0;
+  }
+#endif
+
   while ((c = patterStr[i++]) != 0) {
     if (c == matchAll) { /* Match "%" */
-
       while ((c = patterStr[i++]) == matchAll || c == matchOne) {
         if (c == matchOne && (j >= size || str[j++] == 0)) {
           return TSDB_PATTERN_NOWILDCARDMATCH;
         }
       }
+
       if (c == 0) {
         return TSDB_PATTERN_MATCH;
       }
@@ -350,7 +397,7 @@ int WCSPatternMatch(const wchar_t *patterStr, const wchar_t *str, size_t size, c
           break;
         }
 
-        int32_t ret = WCSPatternMatch(&patterStr[i], ++str, size - n - 1, pInfo);
+        int32_t ret = WCSPatternMatch(&patterStr[i], paSize - i - 1, ++str, size - n - 1, pInfo, false);
         if (ret != TSDB_PATTERN_NOMATCH) {
           return ret;
         }
@@ -465,7 +512,9 @@ int32_t compareWStrPatternComp(const void* pLeft, const void* pRight) {
   memcpy(pattern, varDataVal(pRight), varDataLen(pRight));
   memcpy(str, varDataVal(pLeft), size * sizeof(wchar_t));
 
-  int32_t ret = WCSPatternMatch(pattern, str, size, &pInfo);
+  size_t len = varDataLen(pRight)/TSDB_NCHAR_SIZE;
+
+  int32_t ret = WCSPatternMatch(pattern, len, str, size, &pInfo, true);
 
   free(pattern);
   free(str);

tests/pytest/query/queryLike.py

@@ -161,6 +161,17 @@ class TDTestCase:
         tdSql.query("select * from st where tagg like 'tag\_\__\_';")
         tdSql.checkData(0,0, "tag__a_")
 
+        tdSql.execute("create table stb(ts timestamp, c0 int) tags(t0 nchar(64))")
+        tdSql.execute("insert into tb1 using stb tags('测试ABCabc') values(now, 1)")
+        tdSql.query("select * from tb1 where t0 like '%试AB%'")
+        tdSql.checkRows(1)
+
+        tdSql.query("select * from tb1 where t0 like '测试AB%'")
+        tdSql.checkRows(1)
+
+        tdSql.query("select * from tb1 where t0 like '%ABCabc'")
+        tdSql.checkRows(1)
+
         os.system("rm -rf ./*.py.sql")
 
     def stop(self):