Databricks SQL Databricks Runtime 返回表中的列的列表。 如果该表不存在,则会引发异常。 语法 复制 SHOW COLUMNS { IN | FROM } table_name [ { IN | FROM } schema_name ] 备注 关键字IN和FROM可互换。 参数 table_name 标识表。 名称不得包含时态规范或选项规范。
适用于: Databricks SQL Databricks Runtime返回表中的列的列表。 如果该表不存在,则会引发异常。语法复制 SHOW COLUMNS { IN | FROM } table_name [ { IN | FROM } schema_name ] 备注 关键字 IN 和FROM 可互换。参数table_name 标识表。 名称不得包含 时态规范或选项规范。 schema_name 使用架构名称...
securable_object The object whose privileges to show. Returns A result set with the following columns: principal STRING NOT NULL: The principal who has the permission. actionType STRING NOT NULL: Which action the principal has permission to perform. objectType STRING: The object which the per...
format=1] Partition Provider: Catalog Partition Columns: [`grade`] Schema: root -- name: string (nullable = true) -- grade: integer (nullable = true) -- show multiple table details with pattern matching > SHOW TABLE EXTENDED LIKE 'employe*'; database tableName isTemporary information ---...
If you are in an RDBMS platform that supports theQUALIFYclause (Teradata, Snowflake, Databricks) ...
SHOW ALL IN SHARE SHOW CATALOGS SHOW COLUMNS SHOW CONNECTIONS SHOW CREDENTIALS SHOW DATABASES SHOW FUNCTIONS SHOW GROUPS SHOW LOCATIONS SHOW PARTITIONS SHOW PROVIDERS SHOW RECIPIENTS SHOW SCHEMAS SHOW SHARES SHOW SHARES IN PROVIDER SHOW TABLE EXTENDED ...
If you are in an RDBMS platform that supports theQUALIFYclause (Teradata, Snowflake, Databricks) ...
You can explore SQL with expression helpers to do things like find columns and tables in a query: from sqlglot import parse_one, exp # print all column references (a and b) for column in parse_one("SELECT a, b + 1 AS c FROM d").find_all(exp.Column): print(column.alias_or_name...
因此,为了获取列名,你只需写 dot.columns,好的。当你在这里执行时,你将能够得到列名,比如姓名、年龄、经验。完美。这是完全正确的。现在,这是我的 D。现在。 假设如果我想提取一些头部元素。我将能够提取,因为在 pandas 中你也有 head。假设我想获取前三条记录。我将以这种特定格式获得,通常是在列表格式中,...
COLUMNS ( dst.id AS band_id ) ) GROUP BY band_id ORDER BY num_members DESC FETCH FIRST 10 ROWS ONLY; 截至2024 年 1 月,我知道的唯一支持 SQL/PGQ 的 DBMS 是 Oracle。DuckDB 的实验性分支虽然也支持 SQL/PGQ,但上面示例不能运行,因为两个数据库支持的语法略有不同。你可以从 CWI/DuckDB 研究...