The third method to generate an SQL Server describe table output is to query the information schema. We query information_schema.columns and filter on our table name. Here’s the query for the customer table: SELECT*FROMINFORMATION_SCHEMA.COLUMNSWHEREtable_name='customer'; The output is: The ...
DESCRIBETABLEhost-variableINTOdescriptor-nameUSINGNAMESLABELSANYBOTH 説明 TABLEhost-variable 表またはビューを指定します。 この名前に補助表を指定してはいけません。 DESCRIBE ステートメントの実行時には、ホスト変数に、現行サーバーに 存在する表またはビューを示す名前が含まれていなければいけ...
DESCRIBE FUNCTION DESCRIBE LOCATION DESCRIBE PROVIDER DESCRIBE QUERY DESCRIBE RECIPIENT DESCRIBE SCHEMA DESCRIBE SHARE DESCRIBE TABLE DESCRIBE VOLUME LIST SHOW ALL IN SHARE SHOW CATALOGS SHOW COLUMNS SHOW CONNECTIONS SHOW CREATE TABLE SHOW CREDENTIALS SHOW DATABASES SHOW FUNCTIONS SHOW GROUPS SHOW LOCATIONS SH...
mysql>ALTERTABLEscoreADDremarksVARCHAR(1000)NULLDEFAULT'无';QueryOK,0rowsaffected(0.04sec)Records:0Duplicates:0Warnings:0 上面的命令就完成了数据列的插入;下面查看新增列之后的表结构: 代码语言:javascript 复制 mysql>describe score;+---+---+---+---+---+---+|Field|Type|Null|Key|Default|Extra|...
describe是sql啥关键字 desc在sql中 SQL:结构化查询语言 C R U D: 增删改查 table : name age score desc+表名 ---> 查询表结构 或者用 describe 命令 (desc是describe的简写) 查询语言:SELECT [DISTINCT] {*,column[alias],...} FROM table;...
DESCRIBE TABLE 查看表结构 :)desc mt_table ┌─name─┬─type───┬─default_type─┬─default_expression─┐ │ date │ Date │ │ │ │ id │ UInt8 │ │ │ │ name │ String │ │ │ └──────┴────────┴──────────────┴──────────...
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drop table #table_name 与此相关的是“select into”选项,可以在数据库属性 对话框中,勾起来此项,或者在Query Analyzer中执行 execute sp_dboption 'db_name','select into','true' 开启。默认值是关闭的。 主题:专贴揭示SQL语句,贴出你的精妙SQL,欢迎来抢分!
400 UnsupportedClassCode The specified DB instance class stops selling. 实例规格停止售卖。 400 InvalidBackupSet The specified database does not exist in the backup set. 备份集中没有指定的数据库。 400 OrdTCommodityQueryError Failed to query for product. 查询产品失败。 400 ProductInstanceReleased The...
(orALTERTABLERECOVERPARTITIONS)--显示数据库/SCHEMAS,表,表属性,视图,分区,函数,索引,列,建表语句SHOWDATABASES/SCHEMAS,TABLES,TBLPROPERTIES,VIEWS,PARTITIONS,FUNCTIONS,INDEX[ES],COLUMNS,CREATETABLE--显示详细信息,数据库/SCHEMA,表,视图,物化视图DESCRIBEDATABASE/SCHEMA,table_name,view_name,materialized_view_...