7.修改表名 ALTERTABLEStudent RENAMETOTeacher; 8.增加/删除列 ALTERTABLEStudentADDCOLUMNStatusTEXTNOTNULLdefault'';ALTERTABLEStudentDROPCOLUMNStatus; 9.导出数据表 .dump Student PRAGMA foreign_keys=OFF;BEGINTRANSACTION;CREATETABLEStudent( IDINTEGERPRIMARYKEYAUTOINCREMENT, NameTEXTNOTNULL, ClassTEXTNOTNULL, A...
sql-command::=CREATE[TEMP|TEMPORARY]TABLE[database-name.]table-nameASselect-statement column-def::=name[type][[CONSTRAINTname]column-constraint]* type::=typename| typename(number)| typename(number,number) column-constraint::=NOT NULL[conflict-clause]| PRIMARY KEY[sort-order][conflict-clause][AUT...
CREATETABLEtable_name( column1 datatype, column1 datatype ); 删除表 DROPTABLEtable_name; 修改表 ALTERTABLEtable_name RENAMETOtable_name2; 添加列 ALTERTABLEtable_nameADDCOLUMNAgeINT; 可以使用 “.schema”查看字段, “.tables” 查看表。 INSERT INSERTINTOTablename(colname1, colname2, ….)VALUES...
comment on column tb_user.username is '用户名'; comment on column tb_user.userpwd is '密码'; comment on column tb_user.age is '年龄'; comment on column tb_user.gender is '性别'; comment on column tb_user.email is '邮箱'; comment on column tb_user.regtime is '注册日期'; 表名tb...
ADD [COLUMN] 新列名 数据类型 完整性约束条件; ALTER TABLE 表名 /* 添表级约束条件*/ ADD 表级完整性约束条件; ALTER TABLE 表名 /* 删除列*/ DROP [COLUMN] 列名 [CASECADE/RESTRICT]; ALTER TABLE 表名 /* 删除约束条件*/ DROP CONSTRAINT 完整性约束条件 [CASECADE/RESTRICT]; ...
_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@+id/et_name" /> <Button android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="16dp" android:layout_marginTop="16dp" android:onClick="add" ...
使用sqlite3_column_text等函数提取字段数据 使用sqlite3_finalize释放SQL语句对象(sqlite3_stmt) 使用sqlite3_close函数关闭数据库 sqlite3 *db; sqlite3_stmt *statement; sqlite3_open(存储路径,&db); sqlite3_prepare_v2(db, sql语句, &statement, NULL); sqlite3_bind_text(statement, 1, 要绑定的数据,...
sqlite> alter table employee add column tele varchar(50) not null;#alter table <表名> add column <字段名> [<类型>] sqlite> .schema employee CREATE TABLE employee( emp_id integer primary key, emp_name varchar(20) not null, sex char(2) default('男'), title varchar(20), wage float,...
} @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(String constraintName...
AddColumn ✔ AddForeignKey ✔ (rebuild) AddPrimaryKey ✔ (rebuild) AddUniqueConstraint ✔ (rebuild) AlterColumn ✔ (rebuild) CreateIndex ✔ CreateTable ✔ DropCheckConstraint ✔ (rebuild) DropColumn ✔ (rebuild) DropForeignKey ✔ (rebuild) DropIndex ✔ DropPrimaryKey ✔ (rebuil...