multiple where clause

Excuse the basic level of the question, but I have a large SQL query with multiple where clauses, one of which is where I need to filter for:

select * from mytable
where field1= 'value1' OR 'value2' OR 'value3' OR 'value4'

Is there anyway to do the where clause for where the field1 contains multiple options, the way I thought of doing it above doesnt work. Can you do this in a single where clause, or do you need a where clause per possible value. Just somewhat concerned that OR could ignore all the initial logic and treat that as an option for the data in itself.
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pma111Asked:
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pma111Author Commented:
select * from mytable
where myfield= 'abc' OR
where myfield= 'def' OR
where myfield= 'ghi' OR
where myfield= 'jkl'

The above doesnt work either, produces the error ORA-00936: missing expression
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Shaun KlineLead Software EngineerCommented:
You can use an IN clause:
where field1 IN ('value1','value2','value3','value4')

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slightwv (䄆 Netminder) Commented:
Use IN:
where field1 in ( 'value1','value2','value3' ,'value4')

Otherwise just repeat field1=:
where field1= 'value1' OR field1= 'value2' OR field1='value3' OR field1= 'value4'
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slightwv (䄆 Netminder) Commented:
>> The above doesnt work either, produces the error ORA-00936: missing expression

WHERE is just once...
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pma111Author Commented:
Thanks
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awking00Commented:
>> Can you do this in a single where clause<<
You can only have a single where clause, although that clause can contain many filters using combinations of AND and OR. Just be careful when combining ANDs and ORs -
select ...
where condition1 or condition2 and condition3 returns records where condition1 exists or both condition2 and condition3 exist
select ...
where (condition1 or condition2) and condition3 returns records where condition1 or condition2 exists and condition3 exists
No points please, just trying to provide some understanding.
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