我有2个数据库，一个在Sql Server上，一个在MySQL上，两者的定义略有不同。我需要做的是将MySQL中的定义合并到Sql Server中，而无需重新创建表。我正在使用Sql Server迁移助手，但它所做的第一件事是检查架构是否存在，如果存在，则将其删除。那不是我想要的。这是SSMA输出的示例。
IF EXISTS (SELECT * FROM sys.objects so JOIN sys.schemas sc ON so.schema_id = sc.schema_id WHERE so.name = N'opencall' AND sc.name = N'dbo' AND type in (N'U'))
BEGIN
DECLARE @drop_statement nvarchar(500)
DECLARE drop_cursor CURSOR FOR
SELECT 'alter table '+quotename(schema_name(ob.schema_id))+
'.'+quotename(object_name(ob.object_id))+ ' drop constraint ' + quotename(fk.name)
FROM sys.objects ob INNER JOIN sys.foreign_keys fk ON fk.parent_object_id = ob.object_id
WHERE fk.referenced_object_id =
(
SELECT so.object_id
FROM sys.objects so JOIN sys.schemas sc
ON so.schema_id = sc.schema_id
WHERE so.name = N'opencall' AND sc.name = N'dbo' AND type in (N'U')
)
OPEN drop_cursor
FETCH NEXT FROM drop_cursor
INTO @drop_statement
WHILE @@FETCH_STATUS = 0
BEGIN
EXEC (@drop_statement)
FETCH NEXT FROM drop_cursor
INTO @drop_statement
END
CLOSE drop_cursor
DEALLOCATE drop_cursor
DROP TABLE [dbo].[opencall]
END
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE
[dbo].[opencall]
(
[custom_l] real NULL,
[custom_k] real NULL,
[loggedbygroup] varchar(160) NULL,
[fk_authoriser] varchar(64) NULL,
[itsm_impact_level] varchar(50) NULL,
[itsm_urgency_level] varchar(50) NULL,
[flg_firsttimefix] int NULL,
[itsm_title] varchar(254) NULL,
[flg_requiresauth] int NULL,
[flg_authorised] int NULL,
[authanalyst] varchar(64) NULL,
[authdatex] int NULL,
[rfc_callref] int NULL,
[prb_callref] int NULL,
[c_ratingtxt] varchar(124) NULL,
[itsm_swtoday_on] int NULL,
[itsm_schedendx] int NULL,
[itsm_schedstartx] int NULL,
[custom_g] int NULL,
[custom_h] int NULL,
[custom_i] int NULL,
[custom_j] real NULL,
[custom_i1] varchar(512) NULL,
[custom_i2] varchar(512) NULL,
[custom_i3] varchar(512) NULL,
[custom_i4] varchar(512) NULL,
[custom_d1] varchar(512) NULL,
[custom_d2] varchar(512) NULL,
[custom_d3] varchar(512) NULL,
[custom_d4] varchar(512) NULL,
[companyname] varchar(128) NULL,
[fk_contract_id] varchar(124) NULL,
[fk_company_id] varchar(64) NULL,
[prb_state] varchar(32) NULL,
[itsm_wssm_on] int NULL,
[flg_resolve_incs] int NULL,
[flg_resolve_prbs] int NULL,
[fk_dept_code] varchar(254) NULL,
[flg_ke] int NULL,
[custom_f] varchar(164) NULL,
[custom_e] varchar(164) NULL,
[custom_d] varchar(164) NULL,
[custom_c] varchar(164) NULL,
[custom_b] varchar(164) NULL,
[custom_a] varchar(164) NULL,
[contact_id] varchar(64) NULL,
[workitemprogress] varchar(10) NULL,
[nextactdate] varchar(20) NULL,
[nextaction] int NULL,
[nextactdatex] int NULL,
[lastactdatex] int NULL,
[lastactdate] varchar(20) NULL,
[lastactby] varchar(20) NULL,
[commitdate] varchar(20) NULL,
[lastaction] int NULL,
[commitdatex] int NULL,
[assigncount] int NULL,
[origin] varchar(64) NULL,
[stateflags] int NULL,
[a_rating] int NULL,
[last_text] varchar(255) NULL,
[c_rating] int NULL,
[prob_text] varchar(255) NULL,
[callclass] varchar(64) NULL,
[extdetails] varchar(64) NULL,
[issueref] varchar(20) NULL,
[component] varchar(64) NULL,
[component_id] varchar(64) NULL,
[contact] varchar(64) NULL,
[compltdatx] int NULL,
[postcode] varchar(20) NULL,
[site] varchar(124) NULL,
[compltdate] varchar(20) NULL,
[respondbyx] int NULL,
[fixbyx] int NULL,
[completeby] varchar(20) NULL,
[closedatex] int NULL,
[assigndatx] int NULL,
[logdatex] int NOT NULL,
[withinfix] int NULL,
[totaltime] int NULL,
[withinresp] int NULL,
[fix_time] int NULL,
[resp_time] int NULL,
[fixby] varchar(20) NULL,
[respondby] varchar(20) NULL,
[fixcode] varchar(32) NULL,
[probcode] varchar(32) NULL,
[costcenter] varchar(64) NULL,
[rate] int NULL,
[slafix] int NULL,
[slaresp] int NULL,
[equipment] varchar(64) NULL,
[closedate] varchar(20) NULL,
[closedby] varchar(64) NULL,
[assigndate] varchar(20) NULL,
[logdate] varchar(20) NULL,
[loggedby] varchar(64) NULL,
[cust_name] varchar(124) NULL,
[cust_id] varchar(64) NULL,
[owner] varchar(64) NULL,
[suppgroup] varchar(160) NULL,
[assignment] varchar(255) NULL,
[tpcontract] varchar(64) NULL,
[priority] varchar(64) NULL,
[condition] int NULL,
[escalation] int NULL,
[status] int NULL,
[callref] int NOT NULL,
[appcode] varchar(16) NULL,
[customer_ref] varchar(200) NULL,
[third_party_email] varchar(100) NULL,
[third_party_reference] varchar(100) NULL,
[action_status] varchar(254) NULL,
[support_unit_cost] int NULL,
[emp_sick_reason] varchar(254) NULL,
[emp_sick_enddate] varchar(128) NULL,
[emp_sick_startdate] varchar(128) NULL,
[emp_sick_enddatex] int NULL,
[emp_sick_startdatex] int NULL,
[emp_sick_name] varchar(64) NULL,
[itsm_sladef] varchar(124) NULL,
[request_qty] int NULL,
[breach_text] varchar(255) NULL,
[itsm_catreq_type] varchar(254) NULL,
[itsm_prefered_text] varchar(64) NULL,
[bpm_placedonhold] int NULL,
[request_comp_price] varchar(254) NULL,
[request_comp_cost] varchar(254) NULL,
[request_sla_price] varchar(254) NULL,
[request_sla_cost] varchar(254) NULL,
[request_price] varchar(254) NULL,
[request_cost] varchar(254) NULL,
[itsm_fk_service] int NULL,
[itsm_tempemail] varchar(196) NULL,
[itsm_temptel] varchar(64) NULL,
[itsm_tempnote] varchar(254) NULL,
[itsm_requiredbyx] int NULL,
[cfh_nirn] varchar(64) NULL,
[bpm_progress_title] varchar(64) NULL,
[bpm_progress_fail] int NULL,
[bpm_progress] int NULL,
[bpm_progress_perc] int NULL,
[close_text] varchar(255) NULL,
[resolve_text] varchar(255) NULL,
[itsm_rfc_type] varchar(64) NULL,
[logcall_source] varchar(16) NULL,
[itsm_priority_level] varchar(50) NULL,
[itsm_selfservice_on] int NULL,
[itsm_thirdparty] int NULL,
[itsm_buildx] int NULL,
[itsm_testx] int NULL,
[itsm_reviewx] int NULL,
[itsm_workx] int NULL,
[resolve_datex] int NULL,
[resolve_date] varchar(64) NULL,
[itsm_status] varchar(124) NULL,
[bpm_stage_id] int NULL,
[bpm_workflow_id] varchar(124) NULL,
[bpm_status_id] varchar(124) NULL,
[bpm_timer_id] int NULL,
[bpm_waitingauth] int NULL,
[bpm_waitingtasks] int NULL,
[bpm_stage_title] varchar(124) NULL,
[itsm_prefered_suppgroup] varchar(64) NULL,
[temp] varchar(100) NULL,
[bpm_task_title] varchar(124) NULL,
[bpm_parentcallref] int NULL,
[bpm_managerid] varchar(64) NULL,
[callback_callref] varchar(16) NULL,
[callback_telephone] varchar(32) NULL,
[bpm_laction] varchar(32) NULL,
[bpm_lactionbytype] varchar(32) NULL,
[bpm_lactionres] varchar(64) NULL,
[bpm_lactionbyid] varchar(64) NULL,
[bpm_execvpme] int NULL,
[newequiptype] varchar(254) NULL,
[flg_tempfix] int NULL,
[itsm_majorinc] varchar(16) NULL,
[bpm_task_id] int NULL,
[bpm_seq_task] int NULL,
[itsm_slaname] varchar(254) NULL,
[probcodedesc] varchar(254) NULL,
[sm_tw_resp_act] varchar(255) NULL,
[flg_ila_complete] int NULL,
[ila_weighting] int NULL,
[requested_start_datex] int NULL,
[requested_end_datex] int NULL,
[itsm_rfc_timing] varchar(32) NULL,
[esc_email_sent] int NULL,
[itsm_sched_datex] int NULL,
[resolvedby] varchar(64) NULL,
[resolvedbygroup] varchar(160) NULL,
[closedbygroup] varchar(160) NULL,
[WR_Target_Release] varchar(254) NULL,
[WR_Status] varchar(254) NULL,
[WR_LOE] varchar(254) NULL,
[WR_Priority] varchar(254) NULL
)
WITH (DATA_COMPRESSION = NONE)
GO
IF EXISTS (SELECT * FROM sys.objects so JOIN sys.schemas sc ON so.schema_id = sc.schema_id WHERE so.name = N'opencall_callref' AND sc.name = N'dbo' AND type in (N'PK'))
ALTER TABLE [dbo].[opencall] DROP CONSTRAINT [opencall_callref]
GO
ALTER TABLE [dbo].[opencall]
ADD CONSTRAINT [opencall_callref]
PRIMARY KEY
CLUSTERED ([callref] ASC)
GO