Question

下面是我在SQL developer中使用的命令，结果是像Col1，Col2，Col3，.. n

select listagg(COLUMN_NAME, ', ') within group (order by column_id asc) 
from all_tab_columns 
where table_name = 'NEIGHBORHOOD_ZIP_IQ';

Answer 1

Sybase（现在为SAP）IQ建立在Sybase（现在也为SAP）SQLAnywhere数据库引擎之上（或用作前端）。最终结果是，根据您要执行的操作，可以使用两种产品的SQL构造（例如，函数）。

注意：我前面没有IQ数据库，因此您可能需要调整以下内容...

SQLAnywhere具有一个list()函数，其功能类似于Oracle的listagg()。

下面是一些显示SYSTABLE表中的列（以逗号分隔的列表）的示例：

# all of the following examples use the comma (',') as the delimiter

# output determined by order in which column names are pulled from table (probably column_id)

select list(c.column_name,',')
from   SYSTABLE t 
join   SYSCOLUMN c
on     t.table_id = c.table_id
where  t.table_name = 'SYSTABLE'
go

table_id,file_id,count,first_page,last_page,primary_root,creator,first_ext_page,last_ext_page,table_page_count,ext_page_count,object_id,table_name,table_type,view_def,remarks,replicate,existing_obj,remote_location,remote_objtype,srvid,server_type,primary_hash_limit,page_map_start,source,encrypted,location_escape_char

# order the output by column_name

select list(c.column_name order by c.column_name,',') 
from   SYSTABLE t
join   SYSCOLUMN c
on     t.table_id = c.table_id
where  t.table_name = 'SYSTABLE'
go

count,creator,encrypted,existing_obj,ext_page_count,file_id,first_ext_page,first_page,last_ext_page,last_page,location_escape_char,object_id,page_map_start,primary_hash_limit,primary_root,remarks,remote_location,remote_objtype,replicate,server_type,source,srvid,table_id,table_name,table_page_count,table_type,view_def

# order the output by column_id

select list(c.column_name order by c.column_id,',')
from   SYSTABLE t
join   SYSCOLUMN c
on     t.table_id = c.table_id
where  t.table_name = 'SYSTABLE'
go

table_id,file_id,count,first_page,last_page,primary_root,creator,first_ext_page,last_ext_page,table_page_count,ext_page_count,object_id,table_name,table_type,view_def,remarks,replicate,existing_obj,remote_location,remote_objtype,srvid,server_type,primary_hash_limit,page_map_start,source,encrypted,location_escape_char

Sybase IQ从带分隔符的表中获取列列表的sql命令是什么。我们在oracle中使用以下命令

1 个答案: