// { [SequelizeDatabaseError: SQLITE_ERROR: Cannot add a REFERENCES column with non-NULL default value] // name: 'SequelizeDatabaseError', // message: 'SQLITE_ERROR: Cannot add a REFERENCES column with non-NULL default value', // parent: // { [Error: SQLITE_ERROR: Cannot add a REFER...
ALTER TABLE 客户信息 ADD COLUMN 备注 DATE 与ADD [COLUMN]子句不同,ALTER [COLUMN]子句只能实现设置默认或删除默认值两种功能。例如,如果没有上述在表”客户信息“添加列”备注“中定义默认值,则通过下述语句为其添加默认值: ALTER TABLE 客户信息 ALTER COLUMN 备注 SET DEFAULT 'Unknown' 如果想删除某一列的默...
return fn(self, operation) File "/usr/lib/python2.7/dist-packages/alembic/operations/toimpl.py", line 123, in add_column schema=schema File "/usr/lib/python2.7/dist-packages/alembic/ddl/impl.py", line 172, in add_column self._exec(base.AddColumn(table_name, column, schema=schema)) Fi...
return fn(self, operation) File "/usr/lib/python2.7/dist-packages/alembic/operations/toimpl.py", line 123, in add_column schema=schema File "/usr/lib/python2.7/dist-packages/alembic/ddl/impl.py", line 172, in add_column self._exec(base.AddColumn(table_name, column, schema=schema)) Fi...
原型: alter table 表名 add column 列名 列名类型; 例子: alter table kk add column online int; 2.针对数据,在已有表的基础上 增 原型:insert into 表名 values(每一列的值); 例子:insert into kk values("xiaohua",4,1,); insert into kk values("GGB",5,0,); ...
Unhandled exception. Microsoft.Data.Sqlite.SqliteException (0x80004005): SQLite Error 1: 'default value of column [Name] is not constant'. at Microsoft.Data.Sqlite.SqliteException.ThrowExceptionForRC(Int32 rc, sqlite3 db) at Microsoft.Data.Sqlite.SqliteCommand.PrepareAndEnumerateStatements(Stopwatch ...
sqlite> .mode column 列对齐 1. 2. 删除一行信息 delete from student where sname='一口'; 1. 由上图可见,名字为“一口”的那条记录被删除了。 修改一条记录的某个内容 UPDATE student SET sage=29 WHERE sname='张立'; 1. 修改数据表结构。
mode column输出帮助信息：sqlite>.help设置每一列的显示宽度：sqlite>.width width_valueExample:设置...
TEXT, NULL, REAL, BLOB default_val = 'Hello World' # a default value for the new column rows c.execute("ALTER TABLE {tn} ADD COLUMN '{cn}' {ct} DEFAULT '{df}'"\ .format(tn=table_name, cn=new_column1, ct=column_type, df=default_val)) #插入新列时, 值可以是空值也可以是默认...
{ return false; } @Override public String getAddColumnString() { return "add column"; } @Override public String getDropForeignKeyString() { throw new UnsupportedOperationException("No drop foreign key syntax supported by SQLiteDialect"); } @Override public String getAddForeignKeyConstraintString(...