Sometimes it’s necessary to find the maximum or minimum value from different columns in a table of the same data type. For example we have a table and three of its columns are of DATETIME type: UpdateByApp1Date, UpdateByApp2Date, UpdateByApp3Date. We want to retrieve data from the t...
报错:Update row with Key (id)=(xxxx) multiple times或者duplicate key value violates unique constraint 问题原因:违反唯一性约束,执行UPDATE、INSERT ON CONFLICT或INSERT操作时,主键存在重复数据。 解决方法: 若INSERT语法报错:可以改为INSERT INTO xx ON CONFLICT的语法,实现主键去重,详情请参见INSERT ON CONFLIC...
SQLGetInfo 返回与连接关联的驱动程序和数据源的常规信息。 语法 C++ 复制 SQLRETURN SQLGetInfo( SQLHDBC ConnectionHandle, SQLUSMALLINT InfoType, SQLPOINTER InfoValuePtr, SQLSMALLINT BufferLength, SQLSMALLINT * StringLengthPtr); 参数 ConnectionHandle [输入] 连接句柄。 InfoType [输入]信息类型。 In...
@Autowired("anyline.service") AnylineService service; //查询默认数据源的SSO_USER表结构 Table table = serivce.metadata().table("SSO_USER"); LinkedHashMap<String, Column> columns = table.getColumns(); //表中的列 LinkedHashMap<String, Constraint> constraints = table.getConstraints(); //表中上...
AI_FUNCTION_INVALID_MAX_WORDS、AI_INVALID_ARGUMENT_VALUE_ERROR、INVALID_JSON_ROOT_FIELD、INVALID_JSON_SCHEMA_MAP_TYPE、REMOTE_FUNCTION_HTTP_RESULT_PARSE_ERROR 2203G sql json 項目無法轉換成目標類型 AI_FUNCTION_HTTP_PARSE_CAST_ERROR、AI_FUNCTION_HTTP_PARSE_COLUMNS_ERROR、AI_FUNCTION_MODEL_SCHEMA_PARS...
different platforms. #ifndef _WIN32_WINNT // Specifies that the minimum required platform is Windows Vista. #define _WIN32_WINNT 0x0600 // Change this to the appropriate value to target other versions of Windows. #endif #include <stdio.h> #include <tchar.h> #include <std...
get(WritableIntObjectInspector.java:36) 这是因为在其为false时候,是使用hive-metastore使用的元数据进行读取数据,而如果此表是使用spark sql DataSource创建的parquet表,其数据类型可能出现不一致的情况,例如通过metaStore读取到的是IntWritable类型,其创建了一个WritableIntObjectInspector用来解析数据,而实际上value是...
Re: How do I get multiple columns with MAX SQL function? I Believe I misunderstood the intended function of MAX. I believe now it's intended to return a scalar value. If I have that wrong please let me know. Reply With Quote Feb...
Use MAX statement with other SQL aggregate functions Simple use case As I stated above, this function will return the maximum value from the specific column. Here, I will show you how to use this function to get the highest or maximum value. I will use the table “OrderDetails” to list...
The lengths of VARCHAR columns are not shown in the table; the actual lengths depend on the data source. To determine the actual lengths of the TABLE_CAT, TABLE_SCHEM, TABLE_NAME, and COLUMN_NAME columns, an application can call SQLGetInfo with the SQL_MAX_CATALOG_NAME_LEN, SQL_MAX_SCH...