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TO_DATE in Oracle JDBC PreparedStatement giving invalid identifier

I am a bit baffled by this as I'm sure I have done it a hundred times but from this snippet of JDBC prepared statement:
"SELECT {0} FROM " +
"(select a.* " +
"from TABLE a " +
"inner join TABLE p ON " +
"and p.AS_OF_DT = TO_DATE(?, 'yyyyMMdd')";
...
pStmt.setString(1, dateAsString);
I am getting
java.sql.SQLSyntaxErrorException: ORA-00904: "YYYYMMDD": invalid identifier
I can reproduce the error in TOAD by removing the quotes around YYYYMMDD.
What do I need to do inside the prepared statement String to prevent this?
I have tried
playing with the upper/lowercase of YYYYMMDD
Ensuring the dateAsString is in the right format
Escaping the quotes like ''YYYYMMDD'' and '''YYYYMMDD'''

SQL MERGE to update or insert values into same table

"MERGE INTO NT_PROPERTY ntProp USING ( " +
"SELECT * FROM NT_PROPERTY ) " +
"VALUES " +
"('minDPTObjectId'," + minDPTObjectId + ", 'Starting DPT Object Id') " +
"('maxDPTObjectId', " + maxDPTObjectId + ", 'Ending DPT Object Id') " +
"vt (NAME, VALUE, NOTE) " +
"ON ( ntProp.NAME = vt.NAME ) " +
"WHEN MATCHED THEN " +
"UPDATE SET VALUE = vt.VALUE "+
"WHEN NOT MATCHED THEN " +
"INSERT (NAME, VALUE, NOTE) VALUES (vt.NAME, vt.VALUE, vt.NOTE)";
Well I'm getting a missing ON keyword error and with no clue what so ever, also is there any other way to make it less clumsy
Help is very much appreciated.

The problem is that your MERGE syntax is incorrect. Your statement takes the form of:
MERGE INTO nt_property ntprop
USING (SELECT * FROM nt_property)
VALUES (...)
vt (...)
ON (ntprop.name = vt.name)
WHEN MATCHED THEN
UPDATE ...
WHEN NOT MATCHED THEN
INSERT ...;
but it should be of the form:
MERGE INTO target_table tgt_alias
USING source_table_or_subquery src_alias
ON (<JOIN conditions>)
WHEN MATCHED THEN
UPDATE ...
WHEN NOT MATCHED THEN
INSERT ...;
Why do you have the VALUES and vt clauses between your using and your on clauses? That's the incorrect syntax. Also, whilst you can use select * from tablename in the using clause, you could just use the tablename directly, since you're selecting all columns and all rows.

MERGE INTO NT_PROPERTY D
USING (SELECT * FROM DUAL ) S
ON (D.NAME = 'minDPTObjectId')
WHEN MATCHED THEN UPDATE SET D.VALUE = '1234'
WHEN NOT MATCHED THEN INSERT (NAME, VALUE, NOTE)
VALUES ('maxDPTObjectId', '1111', 'Ending DPT Object Id') ;

Can java String.format handle replacing ? instead of %s

I'm using
db.execSQL("INSERT INTO table SELECT NULL WHERE '1'=?;",new String[]{"1"});
db.execSQL("INSERT INTO robot_active_variables\n" +
"SELECT NULL, ravs._id,str,val\n" +
"FROM ( SELECT 'is_answer' AS str, ? AS val\n" +
"UNION ALL SELECT 'is_setting', ?\n" +
"UNION ALL SELECT 'is_val', ?\n" +
"UNION ALL SELECT 'is_group_actions', ?\n" +
"UNION ALL SELECT 'is_lone_action', ?\n" +
"UNION ALL SELECT '_id', ?\n" +
"UNION ALL SELECT 'val', ? ) v\n" +
"join robot_active_variables_super ravs on ravs._id not in (select _id_parent from robot_active_variables);",new String[]{"1", "0", "0", "0", "0", String.valueOf(idAnswer), "0"})
And I want to use log.v to output the sql inserts.
1 What's it called to replace %s with String array, and what's the name for replacing '?' with String array? I noticed this strategy very often in c but never knew what's it called or how to google it.
2 Can formatter or any other method do the above replacements directly?
What i tried:
v1: Log.v("custom log.v call " , sql + bindArgs));
but i had to copy paste every var into the "?"
v2: Log.v("custom log.v call " , String.format(sql.replaceAll("\\?","%s"),bindArgs));
but then some queries didn't work, it seems that numbers are converted to text, ie: 'select 1=?' with new String[]{"1"} will give false because it becomes 'select 1="1"'
v3: Log.v("custom log.v call " , String.format(sql.replaceAll("\\?","\"%s\""),bindArgs));
works quite well

v2: Log.v("custom log.v call " , String.format(sql.replaceAll("\\?","%s"),bindArgs));
but then some queries didn't work, it seems that numbers are converted to text, ie: 'select 1=?' with new String[]{"1"} will give false because it becomes 'select 1="1"'
v3: Log.v("custom log.v call " , String.format(sql.replaceAll("\\?","\"%s\""),bindArgs));
works quite well
Either of these solutions is fine. Note that in the first version, you should still use the original string when executing the query, not the formatted one. As you noted, the formatted version of your query will convert all types to a String. This will allow the SQL engine to use the correct types and correct quoting to avoid SQL injection.

Mysql query with In clause regex

I have a SQL query like this:
"select f.filterid as filtename, f.id as filtertext " +
"from filter f " +
"where group_Id = '" + id +"' " +
"OR groupIds like '%." + id + ".%' ";
And I want to pass a list of ids to this query to make performance better. I don't know whether REGEX works with in an IN clause. And I tried the below one which is not working and not sure what to use in case of REGEX.
"select f.filterid as filtename, f.id as filtertext from filter f " +
"where group_Id in ("+StringUtils.join(ids, "','")+")" +
"OR groupIds in ("+StringUtils.join(ids, "','")+")"";
Thanks.

I would recommend to use the Query#setParameter to achieve this, if you are using JPA you can easily supply your ids list in the setParameter.
But for your current resolution you may try the below changes.
Not sure if your group_Id column expects integer or string datatype, well I will propose changes for either of the cases.
If it expects String - You are missing the starting " ' " change your code as below
If it expects integer type - You should not wrap your comma separator with " ' ", remove them as below
"select f.filterid as filtename, f.id as filtertext from filter f " + "where group_Id in ("+StringUtils.join(ids, ",")+")" + "OR groupIds in ("+"'"+StringUtils.join(ids, "','")+"'"+")";
Trying running this query and see if you get the desired resultset

Perhaps the problem lies in the use of method StringUtils.join.
you can edit your sql like the following code.
select f.filterid as filtename, f.id as filtertext from filter f where group_Id in ('groupA_id', 'groupB_id', 'groupC_id')
if your ids is {"groupA_id", "groupB_id", "groupC_id"}, then
"select f.filterid as filtename, f.id as filtertext from filter f where group_Id in (" + "'" + StringUtils.join(ids, "','") + "'" +")"

Try Something like this:
Query query = session.Query("select f.filterid as filtename, f.id as filtertext from filter f where group_Id in :list");
query.SetParameterList(":list", ListOfIds);

MySQL query error from Java

I've got the following query in my Java code. But when I run it, it says a syntax error in the query.
What am I doing wrong here?
"Inset into department ( dept_name, dept_desc ) values ('" + deptName + "','" + deptDesc + "')"

Its INSERT not Inset . This is a simple typo. Replace the word.
"Inset into department ( dept_name, dept_desc ) values ('" + deptName + "','" + deptDesc + "')"
^^^^^^

For future reference, as a beginner, using an SQL formatter might help point out the error for nagging issues like these.