//nodeName 就是 select 、update 、insert 、 deleteString nodeName =context.getNode().getNodeName();//包装成 SqlCommandType 类型,这是个枚举SqlCommandType sqlCommandType =SqlCommandType.valueOf(nodeName.toUpperCase(Locale.ENGLISH));//判断当前是不是 selectbooleanisSelect = sqlCommandType ==SqlCommandT...
注意:不需要 .Includes 就能使用导航函数//Count可以用到Where或者Select中 //x.导航对象.Count()//返回导航数量 //x.导航对象.Count(z=>z.id==1) //可以加条件 Where(x=>x.books.Count()>1) Select(it=>new { count =>x.books.Count()})//5.0.9.8-preview01支持了在Select中用Count //Any ...
build()) .build(); // "jacky 'select ids, name from test where id < 5'"; String sql = "jacky job 'select ids, name from test where id < 5'"; SqlParser parser = SqlParser.create(sql, config.getParserConfig()); try { SqlNode sqlNode = parser.parseStmt(); System.out.println...
SQL_CA1_POSITIONED_DELETE = 當數據指標是動態數據指標時,支援 DELETE WHERE CURRENT OF SQL 語句。 (SQL-92 符合入門層級的驅動程式一律會傳回此選項,如支援。SQL_CA1_SELECT_FOR_UPDATE = 當數據指標是動態數據指標時,支援 SELECT FOR UPDATE SQL 語句。 (SQL-92 符合入門層級的驅動程式一律會傳回此選項,...
SELECT [Main].[Root] AS [Root_Number]CAST([Main].[Root] AS INT] AS [Root_String] FROM [Main] The result of this query shows the original Root field and the Root field cast as a string. For more information about joins and cross-database joins, see Join Your Data. Reduce the size...
SQL_CA1_POSITIONED_DELETE = 當數據指標是動態數據指標時,支援 DELETE WHERE CURRENT OF SQL 語句。 (SQL-92 符合入門層級的驅動程式一律會傳回此選項,如支援。SQL_CA1_SELECT_FOR_UPDATE = 當數據指標是動態數據指標時,支援 SELECT FOR UPDATE SQL 語句。 (SQL-92 符合入門層級的驅動程式一律會傳回此選項,...
举个例子,如下图,一条简单的select c,d from source where a = '6'sql,经过 calcite 的解析之后,就可以得到 AST model(SqlNode)。可以看到有SqlSelect、SqlIdentifier、SqlIdentifier、SqlCharStringLiteral。 sql validator(extends SqlValidatorImpl):根据语法、表达式、表信息进行 SqlNode 正确性校验。
对于以上SQL,String类型pt列,INT类型常量,都会转为DOUBLE进行比较。即使Project设置了odps.sql.udf.strict.mode=true,旧版MaxCompute不会报错,所有pt都会过滤掉,而MaxCompute 2.0会直接报错。示例如下: 错误写法: select key from srcpt where pt in (1, 2); 报错信息: FAILED: ODPS-0130071:[0,0] Semantic an...
Dynamic Pivot with a where clause Dynamic Query and print @sql test dynamic query in view Dynamic query: EXEC - Need to get a return value from query Dynamic SELECT column names Dynamic SQL - creating a temp table with a name that includes a random number Dynamic SQL for Primary Key Decla...
String & binary Spatial geography & instances (geography Data Type) Spatial geometry & instances (geometry Data Type) Data types XML DBCC Functions Language elements Queries Queries General SELECT FROM plus JOIN, APPLY, PIVOT WHERE Hints Predicates ...