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Full Discussion: Output to single line
Top Forums Shell Programming and Scripting Output to single line Post 302608145 by darling on Friday 16th of March 2012 10:06:31 AM
Old 03-16-2012
still i am not getting any output

---------- Post updated at 09:06 AM ---------- Previous update was at 08:52 AM ----------

when i am using sed 'N;s/\n/, /' i am getting below output

Quote:
1 : dis ql(* CLUSTER, CT.CL.ALLUHUB.FLST_TO_HUB_PROV.01
CT.CL.ALLUHUB , CT.CL.APGTCJT1.HUB.GTCJ_TO_HUB_APO.01
CT.CL.APGTCJT1 , CT.CL.APOLLOC1.FTTC.SBL_TO_HUB_APO.01
I am looking for the out put as

Quote:
CT.CL.ALLUHUB.FLST_TO_HUB_PROV.01, CT.CL.ALLUHUB
CT.CL.APGTCJT1.HUB.GTCJ_TO_HUB_APO.01, CT.CL.APGTCJT1
and in starting i am getting extra one as 1 : dis ql(* CLUSTER,
 

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CLUSTER(7)						  PostgreSQL 9.2.7 Documentation						CLUSTER(7)

NAME
CLUSTER - cluster a table according to an index SYNOPSIS
CLUSTER [VERBOSE] table_name [ USING index_name ] CLUSTER [VERBOSE] DESCRIPTION
CLUSTER instructs PostgreSQL to cluster the table specified by table_name based on the index specified by index_name. The index must already have been defined on table_name. When a table is clustered, it is physically reordered based on the index information. Clustering is a one-time operation: when the table is subsequently updated, the changes are not clustered. That is, no attempt is made to store new or updated rows according to their index order. (If one wishes, one can periodically recluster by issuing the command again. Also, setting the table's FILLFACTOR storage parameter to less than 100% can aid in preserving cluster ordering during updates, since updated rows are kept on the same page if enough space is available there.) When a table is clustered, PostgreSQL remembers which index it was clustered by. The form CLUSTER table_name reclusters the table using the same index as before. You can also use the CLUSTER or SET WITHOUT CLUSTER forms of ALTER TABLE (ALTER_TABLE(7)) to set the index to be used for future cluster operations, or to clear any previous setting. CLUSTER without any parameter reclusters all the previously-clustered tables in the current database that the calling user owns, or all such tables if called by a superuser. This form of CLUSTER cannot be executed inside a transaction block. When a table is being clustered, an ACCESS EXCLUSIVE lock is acquired on it. This prevents any other database operations (both reads and writes) from operating on the table until the CLUSTER is finished. PARAMETERS
table_name The name (possibly schema-qualified) of a table. index_name The name of an index. VERBOSE Prints a progress report as each table is clustered. NOTES
In cases where you are accessing single rows randomly within a table, the actual order of the data in the table is unimportant. However, if you tend to access some data more than others, and there is an index that groups them together, you will benefit from using CLUSTER. If you are requesting a range of indexed values from a table, or a single indexed value that has multiple rows that match, CLUSTER will help because once the index identifies the table page for the first row that matches, all other rows that match are probably already on the same table page, and so you save disk accesses and speed up the query. CLUSTER can re-sort the table using either an index scan on the specified index, or (if the index is a b-tree) a sequential scan followed by sorting. It will attempt to choose the method that will be faster, based on planner cost parameters and available statistical information. When an index scan is used, a temporary copy of the table is created that contains the table data in the index order. Temporary copies of each index on the table are created as well. Therefore, you need free space on disk at least equal to the sum of the table size and the index sizes. When a sequential scan and sort is used, a temporary sort file is also created, so that the peak temporary space requirement is as much as double the table size, plus the index sizes. This method is often faster than the index scan method, but if the disk space requirement is intolerable, you can disable this choice by temporarily setting enable_sort to off. It is advisable to set maintenance_work_mem to a reasonably large value (but not more than the amount of RAM you can dedicate to the CLUSTER operation) before clustering. Because the planner records statistics about the ordering of tables, it is advisable to run ANALYZE(7) on the newly clustered table. Otherwise, the planner might make poor choices of query plans. Because CLUSTER remembers which indexes are clustered, one can cluster the tables one wants clustered manually the first time, then set up a periodic maintenance script that executes CLUSTER without any parameters, so that the desired tables are periodically reclustered. EXAMPLES
Cluster the table employees on the basis of its index employees_ind: CLUSTER employees USING employees_ind; Cluster the employees table using the same index that was used before: CLUSTER employees; Cluster all tables in the database that have previously been clustered: CLUSTER; COMPATIBILITY
There is no CLUSTER statement in the SQL standard. The syntax CLUSTER index_name ON table_name is also supported for compatibility with pre-8.3 PostgreSQL versions. SEE ALSO
clusterdb(1) PostgreSQL 9.2.7 2014-02-17 CLUSTER(7)
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