我们将Oracle数据同步到sqlserver时，是先得在sqlserver端建表的。
复杂的字段我们不同步，就只考虑下面四种数据类型。
Oracle到SQLServer做的映射： int -> int number -> decimal(18,6) number(p,s) -> decimal(p,s) date -> datetime varchar2(n) -> nvarchar(n)
下面是从Oracle端执行的plsql脚本。
/*
简介：从oracle拉出在mssql建表的脚本。这是用PLSQL语言写成的，在Oracle中执行的脚本。如下是取出BOM属主下的非临时表。
作者：DBA_白老大
最后更新日期：20140515
*/
/*
Oracle到SQLServer做的映射：
int -> int
number -> decimal(18,6)
number(p,s) -> decimal(p,s)
date -> datetime
varchar2(n) -> nvarchar(n)
*/
declare
v_column_name VARCHAR2(30);
v_data_type VARCHAR2(106);
v_data_length number;
v_DATA_PRECISION number;
v_DATA_SCALE number;
v_cnt int;
begin
for i in (
SELECT 'GGMGR' AS OWNER, 'T6' AS table_name FROM DUAL UNION
SELECT 'GGMGR' AS OWNER, 'T2' AS table_name FROM DUAL UNION
SELECT 'GGMGR' AS OWNER, 'T6' AS table_name FROM DUAL
)
loop
dbms_output.put_line('create table '||'erp'||'.'||'dbo.'||i.table_name||'(');
select count(*)
into v_cnt
from dba_tab_columns
where table_name = i.table_name
and owner = i.owner;
for b in 1 .. v_cnt loop
select COLUMN_NAME,
data_type,
data_length,
data_precision,
data_scale
into v_column_name,
v_data_type,
v_data_length,
v_DATA_PRECISION,
v_DATA_SCALE
from dba_tab_columns t
where table_name = i.table_name
and owner = i.owner
and column_id = b;
--INT
IF v_data_type = 'NUMBER' and v_DATA_PRECISION is null and b != v_cnt THEN
dbms_output.put_line(v_column_name||' decimal'||',');
END IF;
IF v_data_type = 'NUMBER' and v_DATA_PRECISION is null and b = v_cnt THEN
dbms_output.put_line(v_column_name||' decimal');
END IF;
--NUMBER
IF (v_data_type = 'NUMBER') and (v_DATA_PRECISION is not null) and (b != v_cnt) THEN
dbms_output.put_line(v_column_name||' decimal'||'('||v_data_precision||','||v_data_scale||'),');
END IF;
IF (v_data_type = 'NUMBER') and (v_DATA_PRECISION is not null) and (b = v_cnt) THEN
dbms_output.put_line(v_column_name||' decimal'||'('||v_data_precision||','||v_data_scale||')');
END IF;
--varchar2
IF (v_data_type = 'VARCHAR2') and (v_DATA_length is not null) and (b != v_cnt) THEN
dbms_output.put_line(v_column_name||' nvarchar'||'('||v_data_length||'),');
END IF;
IF (v_data_type = 'VARCHAR2') and (v_DATA_length is not null) and (b = v_cnt) THEN
dbms_output.put_line(v_column_name||' nvarchar'||'('||v_data_length||')');
END IF;
--date
IF (v_data_type = 'DATE') and (b != v_cnt) THEN
dbms_output.put_line(v_column_name||' DATETIME,');
END IF;
IF (v_data_type = 'DATE') and (b = v_cnt) THEN
dbms_output.put_line(v_column_name||' DATETIME');
END IF;
--不属于INT,NUMBER,DATE,VARCHAR2
IF (v_column_name != 'NUMBER') and (v_column_name != 'DATE') and (v_column_name != 'VARCHAR2') THEN
null;
END IF;
end loop;
dbms_output.put_line(');'||chr(10));
end loop;
end;