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change the contraints type of fields in database

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# 1  
Old 07-26-2007
change the contraints type of fields in database
how to disable the contraint type of a field (which is present in diffrent tables ) in database using a single unix script file.
# 2  
Old 07-26-2007
Could you elaborate on your request with an example
# 3  
Old 07-26-2007
re:: disabling contraint type of field in table
suppose a field name is hrid_1 , and this field is present in 20 tables and the constraint type is NOTNULL, and we want to disable all the hrid_1 field contraint using unix script file.
# 4  
Old 07-26-2007
Quote:
Originally Posted by lorcan
Could you elaborate on your request with an example
suppose a field name is hrid_1 , and this field is present in 20 tables and the constraint type is NOTNULL, and we want to disable all the hrid_1 field contraint using unix script file.
# 5  
Old 07-26-2007
It depends on which data base you are connecting, what are the table names..........

a sample script to have an idead about how you can do that is.

create a file with the name tables in the below mentioned format.

table1
table2
table3

for tablename in $(cat tables)
do
database connecting statemets << EOF
alter table statements
EOF


done
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