query = QSqlQuery() print(query.exec(create_table_sql)) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 在数据库中创建表格时,需要先构造query语句,然后实例化一个QSqlQuery类,使然后调用这个实例化之后的类的exec()方法,来执行构造好的query语句。在执行前,需要打开数据库。 另外query.exec()执行如果成功则会...
CREATETABLE[dbo].[WorkOut]([WorkOutID][bigint]IDENTITY(1,1)NOTNULL,[TimeSheetDate][datetime]NOTNULL,[DateOut][datetime]NOTNULL,[EmployeeID][int]NOTNULL,[IsMainWorkPlace][bit]NOTNULL,[DepartmentUID][uniqueidentifier]NOTNULL,[WorkPlaceUID][uniqueidentifier]NULL,[TeamUID][uniqueidentifier]NULL,[W...
createSQLQuery 执行多条sql SELECT DISTINCT column, AGG_FUNC(column_or_expression), … FROM mytable JOIN another_table ON mytable.column = another_table.column WHERE constraint_expression GROUP BY column HAVING constraint_expression ORDER BY column ASC/DESC LIMIT count OFFSET COUNT; 1. 2. 3. 4...
CREATE TABLE - 用于创建新表，定义表的列和数据类型。ALTER TABLE - 用于修改现有表的结构，例如添加、删除或修改列。DROP TABLE - 用于删除表及其所有数据。3、数据操作语句 INSERT INTO - 用于向表中插入新记录。UPDATE - 用于修改表中的现有记录。DELETE - 用于删除表中的记录。4、函数与聚合操作 COUNT - ...
CREATE TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } ( { <column_definition> | [ <table_constraint> ] [ ,... n ] | [ <table_index> ] [ ,... n ] } [ PERIOD FOR SYSTEM_TIME ( system_start_time_column_name , system_end_time_column_...
Only horizontal partitioning is currently supported with the CREATE TABLE AS statement. For more detail on the partitioning schemes and options seeCREATE TABLE (U-SQL): Creating a Table with Schema. Query_Expression Provides the query expression that defines the schema of the data and provides ...
1. 标准创建表语句 CREATE TABLE `person`( `id` INT NOT NULL AUTO_INCREMENT PRIMARY KEY, `name` VARCHAR(20) NOT NULL, `age` INT NOT NULL DEFAULT 20, `sex` SMAL
Memory optimized CREATE TABLE syntax: syntaxsql Copy CREATE TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } ( { <column_definition> | [ <table_constraint> ] [ ,... n ] | [ <table_index> ] [ ,... n ] } [ PERIOD FOR SYSTEM_TIME ( syste...
此可选子句使用query中的数据来填充表。 指定query时,不能同时指定table_specification。 表架构派生自查询。 请注意,Azure Databricks 会用输入查询的数据覆盖基础数据源,确保创建的表包含与输入查询完全相同的数据。 例子 SQL -- Creates a Delta table>CREATETABLEstudent (idINT,nameSTRING, ageINT);-- ...
DBADM or DBCTRL authority for the database System DBADM SYSADM or SYSCTRL authority Syntax for CREATE TABLE CREATE TABLEtable-name(,column-definitionperiod-definitionunique-constraintreferential-constraintcheck-constraint)LIKEtable-nameview-namecopy-optionsas-result-tablecopy-optionsmaterialized-query-definiti...