❯ python -c 'import sqlglot; e = sqlglot.parse_one("ALTER TABLE table1 MODIFY COLUMN name1 SET TAG foo='bar'", read="snowflake"); print(repr(e))' Traceback (most recent call last): File "<string>", line 1, in <module> File "/Users/tekumara/code3/sqlglot/sqlglot/__...
ALTERTABLE<name>{ALTER|MODIFY}[(][COLUMN]<col1_name>DROPDEFAULT,[COLUMN]<col1_name>SETDEFAULT<seq_name>.NEXTVAL,[COLUMN]<col1_name>{[SET]NOTNULL|DROPNOTNULL},[COLUMN]<col1_name>[[SETDATA]TYPE]<type>,[COLUMN]<col1_name>COMMENT'<string>',[COLUMN]<col1_name>UNSETCOMMENT[,[COLUMN]<c...
] | { ALTER | MODIFY } [ COLUMN ] <col1_name> UNSET TAG <tag_name> [ , <tag_name> ... ] , [ COLUMN ] <col2_name> UNSET TAG <tag_name> [ , <tag_name> ... ] extTableColumnAction ::= { ADD [ COLUMN ] [ IF NOT EXISTS ] <col_name> <col_type> AS ( <expr> ...
ALTER TABLE table_name ADD column_name datatype constraint, MODIFY column_name datatype constraint, DROP column_name; 其中,table_name是要修改的表的名称,ADD用于添加列,MODIFY用于修改列的数据类型或约束,DROP用于删除列。 UPDATE TABLE是一个错误的表达,正确的语法应该是UPDATE语句,用于更新表中的数据。UPDAT...
使用sqitch生成alter table脚本 Sqitch是一个开源的数据库版本控制工具,它可以帮助开发人员管理数据库的变更和追踪数据库模式的演化。使用Sqitch可以生成和管理数据库表的alter table脚本。 Sqitch的工作原理是基于数据库的变更脚本,每个变更脚本对应一个数据库对象的变更操作,例如创建表、修改表结构、添加索引等。开发人员...
Here's an example of renaming a column in PostgreSQL: altertableusers renamecolumnregistered_attocreated_at; Previous How to Add a Default Value Next How to Add a Column Real-time SQL collaboration is here Get started with PopSQL and PostgreSQL in minutes ...
CREATETABLE<name>(<col1_name><col1_type>[NOTNULL]{inlineUniquePK|inlineFK}[,<col2_name><col2_type>[NOTNULL]{inlineUniquePK|inlineFK}][,...])ALTERTABLE<name>ADDCOLUMN<col_name><col_type>[NOTNULL]{inlineUniquePK|inlineFK} Where: ...
ALTERTABLE<name>{ALTER|MODIFY}[(][COLUMN]<col1_name>DROPDEFAULT,[COLUMN]<col1_name>SETDEFAULT<seq_name>.NEXTVAL,[COLUMN]<col1_name>{[SET]NOTNULL|DROPNOTNULL},[COLUMN]<col1_name>[[SETDATA]TYPE]<type>,[COLUMN]<col1_name>COMMENT'<string>',[COLUMN]<col1_name>UNSETCOMMENT[,[COLUMN]<...
tableCommentAction ::= { ALTER | MODIFY [ ( ] [ COLUMN ] <col1_name> COMMENT '<string>' , [ COLUMN ] <col1_name> UNSET COMMENT [ , ... ] [ ) ] } dataGovnPolicyTagAction ::= { ADD ROW ACCESS POLICY <policy_name> ON ( <col_name> [ , ... ] ) | DROP ROW ACCESS ...
CREATETABLE<name>(<col1_name><col1_type>[NOTNULL]{inlineUniquePK|inlineFK}[,<col2_name><col2_type>[NOTNULL]{inlineUniquePK|inlineFK}][,...])ALTERTABLE<name>ADDCOLUMN<col_name><col_type>[NOTNULL]{inlineUniquePK|inlineFK} Where: ...