sql - Sybase IQ 从用分隔符分隔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

Question

下面是我使用的命令SQL developer，结果是 Like 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';

标签： sqloraclesybasesql-loadersap-iq

Answer 1

Sybase（现在是 SAP）IQ 构建在（或用作前端）Sybase（现在也是 SAP）SQLAnywhere 数据库引擎之上；最终结果是，根据您尝试执行的操作，您可以使用这两种产品的 SQL 构造（例如，函数）。

注意：我面前没有 IQ 数据库，因此您可能需要调整以下...

SQLAnywhere 有一个list()功能类似于 Oracle 的listagg().

以下是显示 SYSTABLE 表中的列（以逗号分隔的列表）的几个示例：

# 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