field_names--field names settingforfirst recordofdata filesforexpress mode load dnfs_enable--optionforenabling or disabling DirectNFS(dNFS)forinput datafiles(DefaultFALSE)dnfs_readbuffers--the numberofDirectNFS(
（2）查看数据库的默认字符集：show variables like ‘character_set_server’;查询当前数据库的字符集：show variables like ‘character_set_database’;3.1.3 数据迁移避免乱码客户端字符集很重要，输入数据时，包括文本输入和屏幕输入等，客户端会以这个字符集来解析输入的文本，如果实际输入的字符集与客户端字符...
如果expression1和expression2均为空,则结果为NULL 2、 decode(field_name, value1, new_value1, value2, new_value2, default_value) 函数作用:类似if...else...语句块,针对某个字段,如果它的值为value1,则转换为newValue1,如果值为value2,则转换为newValue2,其他情况显示默认值 注意: decode(field_name...
obclient[SYS]>desc bmsql_customer;+---+---+---+---+---+---+|FIELD|TYPE|NULL|KEY|DEFAULT|EXTRA|+---+---+---+---+---+---+|C_W_ID|NUMBER(38)|NO|PRI|NULL|NULL||C_D_ID|NUMBER(38)|NO|PRI|NULL|NULL||C_ID|NUMBER(38)|NO|PRI|NULL|NULL||C_DISCOUNT|NUMBER(4,4)...
grantrole1totest;//授予角色role1(role1为已存在的角色) ---账户撤销权限 基本语法同grant,关键字为revoke ---删除用户:drop user 用户名称 cascade; 例: dropuserzhangsan cascade; ---查询所有用户(DBA账号执行): select*fromall_users; ---查看当前用户连接: select*...
项目设置(转换)(OracleToSQL) “项目设置”对话框的“转换”页面包含一些设置,用来自定义 SSMA 如何将 Oracle 语法转换为 SQL Server 语法。 “项目设置”和“默认项目设置”对话框中提供了“转换”窗格: 要指定用于所有 SSMA 项目的设置,请在“工具”菜单上单击“默认项目设置”,从“迁移目标版本”下拉列表中...
gsql:Oracle_Functions.sql:1035: NOTICE: | function | sys_guid() | 1.0 | sql | Skip due to version | gsql:Oracle_Functions.sql:1035: NOTICE: | aggregate | wm_concat(text) | 1.0 | internal | Skip due to version | gsql:Oracle_Functions.sql:1035: NOTICE: | function | nvl2(anyelem...
cmd.CommandType=CommandType.StoredProcedure;//指定单次需要处理的条数cmd.ArrayBindCount =recordCount;varcolumnId = dt.AsEnumerable().Select(row => row.Field("id")).ToArray();varcolumnName = dt.AsEnumerable().Select(row => row.Field("name")).ToArray(); cmd.Parameters.Add...
charset = character set name of the target database. ncharset= national character set name of the target database. parfile = read command option from parameter file for field and record, you can use '0x' to specify hex character code, ...
class locations(models.Model): location_id = models.IntegerField(primary_key = True) street_address = models.CharField(max_length = 40) postal_code = models.CharField(max_length = 12) city = models.CharField(max_length = 30) state_province = models.CharField(max_length = 25) country_id ...