Regarding the count(*) while using with table alias

Hi,
I have question in Count(*). Will it work with table allias.
It works when I use like below
"select count(*) po_header_id from po_headers_all" -- its working perfectly
but , when i queried like below its not working,
"select count(*) poh.po_header_id from po_headers_all poh"
I like you guys to clarify my query.
Thanks in advance.
Regards,
Uvaraja

the words you write just after a column or an expression or a function will become an ALIAS and aliases don't have any table or scheme.
select count(*) RRRR from mytable;RRRR is an alias in this example. maybe you have a column called RRRR in the table but this is not it. so you can not put your table name as prefix to it. mytable.RRRR will indicate the column not alias. if it doesn't include a dot, it could be used as alias but dot is violating naming rules.
you could do that:
select count(*) "mytable.RRRR" from mytable;now, "mytable.RRRR" becomes your alias.

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Description: Multiple Paths error while using Bridge Table
1. I have a urgent customer encounterd a design issue and customer was trying to add 3 logical joins between SDI_GPOUP_MEMBERSHIP and these 3 tables (FACT_HOSPITAL_FINANCE_DTLS, FACT_HOSPITAL_BEDS_UTILZN and FACT_HOSPITAL_ATRIBUTES)
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The strange thing compared to your output is that I get an error when I have table prefix in the query block:
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With the Partitioning, OLAP, Data Mining and Real Application Testing options
Master table "SYSTEM"."SYS_IMPORT_FULL_01" successfully loaded/unloaded
Starting "SYSTEM"."SYS_IMPORT_FULL_01": system/******** DUMPFILE=TMP1.dmp LOGFILE=imp.log PARALLEL=8 QUERY=SYSADM.TMP1:"WHERE TMP1.A = 2" REMAP_TABLE=SYSADM.TMP1:TMP3 CONTENT=DATA_ONLY
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ORA-38500: Unsupported operation: Oracle XML DB not present
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Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Master table "SYSTEM"."SYS_IMPORT_FULL_01" successfully loaded/unloaded
Starting "SYSTEM"."SYS_IMPORT_FULL_01": system/******** DUMPFILE=TMP1.dmp LOGFILE=imp.log PARALLEL=8 QUERY=SYSADM.TMP1:"WHERE A = 2" REMAP_TABLE=SYSADM.TMP1:TMP3 CONTENT=DATA_ONLY
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. . imported "SYSADM"."TMP3" 5.406 KB 1 out of 2 rows
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Regarding the count(*) while using with table alias

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