Merge pull request #13522 from taosdata/fix/TS-1586-V26

fix: inserting data from multi files is not supported

docs-cn/12-taos-sql/05-insert.md

@@ -111,13 +111,6 @@ INSERT INTO d1001 FILE '/tmp/csvfile.csv';
 INSERT INTO d21001 USING meters TAGS ('California.SanFrancisco', 2) FILE '/tmp/csvfile.csv';
 ```
 
-也可以在一条语句中向多个表以自动建表的方式插入记录。例如：
-
-```
-INSERT INTO d21001 USING meters TAGS ('California.SanFrancisco', 2) FILE '/tmp/csvfile_21001.csv'
-            d21002 USING meters (groupId) TAGS (2) FILE '/tmp/csvfile_21002.csv';
-```
-
 ## 历史记录写入
 
 可使用 IMPORT 或者 INSERT 命令，IMPORT 的语法，功能与 INSERT 完全一样。

docs-en/12-taos-sql/05-insert.md

@@ -113,13 +113,6 @@ From version 2.1.5.0, tables can be automatically created using a super table as
 INSERT INTO d21001 USING meters TAGS ('California.SanFrancisco', 2) FILE '/tmp/csvfile.csv';
 ```
 
-Multiple tables can be automatically created and inserted in a single SQL statement, like below:
-
-```sql
-INSERT INTO d21001 USING meters TAGS ('California.SanFrancisco', 2) FILE '/tmp/csvfile_21001.csv'
-            d21002 USING meters (groupId) TAGS (2) FILE '/tmp/csvfile_21002.csv';
-```
-
 ## More About Insert
 
 For SQL statement like `insert`, a stream parsing strategy is applied. That means before an error is found and the execution is aborted, the part prior to the error point has already been executed. Below is an experiment to help understand the behavior.

documentation20/cn/12.taos-sql/docs.md

@@ -456,11 +456,6 @@ INSERT INTO
     ```mysql
     INSERT INTO d21001 USING meters TAGS ('Beijing.Chaoyang', 2) FILE '/tmp/csvfile.csv';
     ```
-    也可以在一条语句中向多个表以自动建表的方式插入记录。例如：  
-    ```mysql
-    INSERT INTO d21001 USING meters TAGS ('Beijing.Chaoyang', 2) FILE '/tmp/csvfile_21001.csv'
-                d21002 USING meters (groupId) TAGS (2) FILE '/tmp/csvfile_21002.csv';
-    ```
 
 **历史记录写入**：可使用IMPORT或者INSERT命令，IMPORT的语法，功能与INSERT完全一样。
 

src/client/inc/tsclient.h

@@ -257,6 +257,8 @@ typedef struct SInsertStatementParam {
   int32_t      batchSize;               // for parameter ('?') binding and batch processing
   int32_t      numOfParams;
 
+  int32_t      numOfFiles;
+
   char         msg[512];                // error message
   uint32_t     insertType;              // insert data from [file|sql statement| bound statement]
   uint64_t     objectId;                // sql object id

src/client/src/tscParseInsert.c

@@ -1501,6 +1501,11 @@ int tsParseInsertSql(SSqlObj *pSql) {
         tscInvalidOperationMsg(pInsertParam->msg, "invalid filename", sToken.z);
         goto _clean;
       }
+
+      if (++pInsertParam->numOfFiles > 1) {
+        code = tscInvalidOperationMsg(pInsertParam->msg, "data from multi files is not supported", NULL);
+        goto _clean;
+      }
     } else {
       if (bindedColumns == NULL) {
         STableMeta *pTableMeta = pTableMetaInfo->pTableMeta;

tests/pytest/insert/insertFromCSV.py

@@ -30,7 +30,7 @@ class TDTestCase:
 
         self.ts = 1500074556514
         self.csvfile = "/tmp/csvfile.csv"
-        self.rows = 100000
+        self.rows = 10000
     
     def writeCSV(self):
         with open(self.csvfile, 'w', encoding='utf-8', newline='') as csvFile:
@@ -64,6 +64,8 @@ class TDTestCase:
         tdSql.query("select * from stb")
         tdSql.checkRows(self.rows * 2)
 
+        tdSql.error("insert into t4 using stb tags(2, 'test2') file '%s' t5 using stb(t1) tags(5) file '%s'" % (self.csvfile, self.csvfile))        
+
     def stop(self):
         tdSql.close()
         tdLog.success("%s successfully executed" % __file__)