To rename a column, MySQL provides syntax: ALTER TABLE CHANGE ... which requires re-specification of all the attributes of the column. Disadvantages of the above syntax : - All the column information might not be available to the application trying to do the rename. - There is a risk of...
ALTER TABLE - RENAME COLUMN To rename a column in a table, use the following syntax: ALTERTABLEtable_name RENAMECOLUMNold_nametonew_name; To rename a column in a table in SQL Server, use the following syntax: SQL Server: EXECsp_rename'table_name.old_name','new_name','COLUMN'; ...
ALTER TABLE customer_info RENAME COLUMN age TO age_info; 1. 2. ALTER OR CHANGE COLUMN - 修改字段 ALTER TABLE ALTER COLUMN 或 ALTER TABLE CHANGE COLUMN 语句更改列的定义 注意,仅HIVE ON SPARK支持此语句 语法介绍 ALTER TABLE table_identifier { ALTER | CHANGE } [ COLUMN ] col_name alterColum...
To use an object type in a column definition when modifying a table, either that object must belong to the same schema as the table being altered, or you must have either theEXECUTEANYTYPEsystem privilege or theEXECUTEschema object privilege for the object type. See Also: CREATE INDEXfor inf...
ALTER TABLE table_name RENAME TO new_table_name; For Example: ALTER TABLE suppliers RENAME TO vendors; This will rename thesupplierstable tovendors. Adding column(s) to a table Syntax #1 To add a column to an existing table, the ALTER TABLE syntax is: ...
This will rename thesupplierstable tovendors. Adding column(s) to a table Syntax #1 To add a column to an existing table, the ALTER TABLE syntax is: ALTER TABLE table_name ADD column_name column-definition; For Example: ALTER TABLE supplier ...
ALTERTABLE`user` RENAMECOLUMNcreate_timeTOorder_id>1064-You have an errorinyour SQL syntax;checkthe manual that correspondstoyour MySQL server versionfortherightsyntaxtousenear'COLUMN create_time TO order_id'at line11>时间: 0s 但是在MySQL8.X是可以的(我在Docker上创建一个8.X的容器) ...
Syntax für datenträgerbasierte Tabellen syntaxsql Kopieren ALTER TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } { ALTER COLUMN column_name { [ type_schema_name. ] type_name [ ( { precision [ , scale ] | max | xml_schema_collection } ) ] ...
(columnname); ALTERTABLE(currenttablename)RENAMETO(newtablename); Suchas: Alter,Table,Employ,Add(weight,Number(38,0)); Alter,Table,Employ,Modify(weight,Number(13,2)); Alter,Table,Emp,Rename,Cloumn,weight,To,weight_new; ALTER,TABLE,EMP,DROP,COLUMN,weight_new; ALTER,TABLE,bouns,RENAME,TO...
Syntax for ALTER TABLE ALTER TABLE table-name 1ADDCOLUMNcolumn-definitionALTERCOLUMNcolumn-alterationRENAME COLUMNsource-column-nameTOtarget-column-nameDROPCOLUMNcolumn-nameRESTRICTADD PERIODFORperiod-definitionADDunique-constraintreferential-constraintcheck-constraint4DROPRPRIMARY KEYUNIQUEFOREIGN KEYCHECKCONSTRAINT...