I am using CONCAT(CUSTOMER_ADDRESS_LINE1||,' ',CUSTOMER_ADDRESS_LINE2||,' ',CUSTOMER_ADDRESS_LINE3||,' ',CUSTOMER_CITY)
but I am getting error message as Missing expressions.
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OldProgrammer
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[Concatenation Operator](https://docs.oracle.com/en/database/oracle/oracle-database/19/sqlrf/Concatenation-Operator.html#GUID-08C10738-706B-4290-B7CD-C279EBC90F7E) – astentx Jul 12 '22 at 13:52
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You are mixing operators. Just use || to do all the concatenation:
CUSTOMER_ADDRESS_LINE1||' '||
CUSTOMER_ADDRESS_LINE2||' ' ||
CUSTOMER_ADDRESS_LINE3||' '||
CUSTOMER_CITY

OldProgrammer
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SELECT
CUSTOMER_ADDRESS_LINE1 || ' '
|| CUSTOMER_ADDRESS_LINE2 || ' '
|| CUSTOMER_ADDRESS_LINE3 || ' '
|| CUSTOMER_CITY
from table ..

Ashish Patil
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