-- 修改商品表 goods_id 字段ALTERTABLEgoods_1MODIFYCOLUMNgoods_idBIGINTUNSIGNEDNOTNULLCOMMENT'商品ID';-- 修改出售订单表 goods_id 字段ALTERTABLEsell_order_1MODIFYCOLUMNsell_order_idBIGINTUNSIGNEDNOTNULLCOMMENT'出售订单ID';-- 修改购买订单表 buy_order_id 字段ALTERTABLEbuy_order_1MODIFYCOLUMNbuy_order...
在Snowflake中,列注释的最大长度是16384个字符。列注释是对表中的列进行描述和解释的文本,可以提供有关列的额外信息,如数据类型、含义、用途等。通过列注释,用户可以更好地理解和使用表中的数据。在Snowflake中,可以使用ALTER TABLE语句来添加、修改或删除列注释。
MODIFYCOLUMNgoods_idBIGINTUNSIGNEDNOTNULLCOMMENT'商品ID';--修改出售订单表 goods_id 字段ALTERTABLEsell_order_1 MODIFYCOLUMNsell_order_idBIGINTUNSIGNEDNOTNULLCOMMENT'出售订单ID';--修改购买订单表 buy_order_id 字段ALTERTABLEbuy_order_1 MODIFYCOLUMNbuy_order_idBIGINTUNSIGNEDNOTNULLCOMMENT'出售订单ID与出...
ALTER TABLE order_goods_1 MODIFY COLUMN sell_order_id BIGINT UNSIGNED NOT NULL COMMENT '订单ID' ; ALTER TABLE order_goods_1 MODIFY COLUMN goods_id BIGINT UNSIGNED NOT NULL COMMENT '商品ID' ; 使用python重建ID 使用的python 模块: 这边只展示主程序:完整的程序在附件中都有 1 2 3...
snowflake_warehouse <string> yes alter refresh_mode <string> no AUTO refresh initialize <string> no ON_CREATE n/aProject file Property file Config block dbt_project.yml models: <resource-path>: +materialized: dynamic_table +on_configuration_change: apply | continue | fail +target_lag: downstr...
data manipulations which makes it easier to handle delta data load. The basic idea is to load incrementally extracted data into an intermediate or temporary table and modify records in the final table with data in the intermediate table. The three methods mentioned below are generally used for ...
Modify serie label without need to use col aliases in select Yes No Set chart, X-axis and Y-axis labels Yes No Pre defined color schemes Yes No Optional legend at top, bottom, left or right Yes No Zooming, Export, Print Yes No Export PNG, JPEG, GIF No Pr...
SELECT Specific Columns in a Table Commas in the Front or Back? Place your Commas in front for better Debugging Capabilities Sort the Data with the ORDER BY Keyword Use a Column Name or Number in an ORDER BY Statement Two Examples of ORDER BY using Different Techniques ...
-- create a tag on an existing table’s column alter table <table_name> modify column <column_name> set tag <tag_key> = '<tag_value>' [ , <tag_key> = ’<tag_value>’ , ... ]; alter table <table_name> modify column <column_name> unset <tag_key> [ , <tag_key> , .....
or table using the ID. Scenario 1: UNDROP the Table Using ID Step 1: Create DEMO_TABLE with the column COL1_TBL1. CREATE TABLE DEMO_DB1.DEMO_SCH1.DEMO_TABLE (COL1_TBL1 INT); -- TABLE CREATION SUCCESSFULL INSERT INTO DEMO_DB1.DEMO_SCH1.DEMO_TABLE (COL1_TBL1) VALUES (1); SEL...