你可以用JSON_TABLE来展开它们。 SELECT ids.Id, names.NameFROM test tCROSS JOIN JSON_TABLE(t.id, '$[*]' COLUMNS(ordinal FOR ORDINALITY, Id INT PATH '$')) AS idsLEFT JOIN JSON_TABLE(t.name, '$[*]' COLUMNS(ordinal FOR ORDINALITY, Name TEXT PATH '$')) AS names ON names.ordinal ...
INSERT INTO table_name(column1,column2,...)VALUES(value1,value2,...) table_name: 要插入数据的表。 column1, column2, ...: 要插入数据的列。 value1, value2, ...: 对应列的值。 UPDATE:用于更新数据库表中的现有数据。 UPDATE table_name SET column1=value1,column2=value2,...WHERE cond...
ADD COLUMN to variable table? Add prefix in data column Add Time in SQL HH:MM:SS to another HH:MM:SS Adding a column to a large (100 million rows) table with default constraint adding a extra column in a pivot table created uisng T-SQL Pivot Table query Adding a partition scheme ...
[Input] Length in characters of *TableName. ColumnName [Input] String search pattern for column names. Note If the SQL_ATTR_METADATA_ID statement attribute is set to SQL_TRUE,ColumnNameis treated as an identifier and its case is not significant. If it is SQL_FALSE,ColumnNameis a pattern...
(), table=<user_account>, nullable=False), 'name': 'name', 'type': String()}, {'expr': Column('fullname', String(), table=<user_account>), 'name': 'fullname', 'type': String()}, {'expr': Column('id', Integer(), table=<address>, primary_key=True, nullable=False), '...
[Input] Length in characters of *TableName. ColumnName [Input] String search pattern for column names. Note If the SQL_ATTR_METADATA_ID statement attribute is set to SQL_TRUE,ColumnNameis treated as an identifier and its case is not significant. If it is SQL_FALSE,ColumnNameis a pattern...
Query below lists table (and view) indexes. Query selectschema_name(t.schema_id) +'.'+ t.[name]astable_view,casewhent.[type] ='U'then'Table'whent.[type] ='V'then'View'endas[object_type], i.index_id,casewheni.is_primary_key =1then'Primary key'wheni.is_unique =1then'Unique'...
WHERE TABLE_NAME = 'Course' ORDER BY ORDINAL_POSITION; As a result, the query returns the column names: COLUMN_NAME id name textbook credits is_active department_id In the above example, we use ORDINAL_POSITION to order the columns by their position within the table. In general,this method...
print(p.first_name, # This will be retrieved by the original query ... p.last_name) # This will be retrieved on demand ... John Smith Jane Jones 表面上,看起来该查询同时检出了 first name 和 last name。然而,这个例子实际上执行了三次查询。只有 first names 是由 raw() 查询检出的 —...
IN INNER INTERVAL IS JOIN LEFT LIKE LIMIT MATCH MINUTE MINUTES MONTH NATURAL NOT NULL NULLS ON OR ORDER OUTER RIGHT RLIKE QUERY SECOND SECONDS SELECT SESSION TABLE TABLES THEN TO TRUE TYPE USING WHEN WHERE WITH YEAR DDL语句 DDL语句,即数据定义语句(Data Definition Languages)。其关键字包括:CREATE...