Where clause dynamic postgresql with date

[Gabri11]

Hi all, I'm trying to get a date from a database select, save it in a global variable and reuse the same variable to put it in a where clause. All inputs are postgresql database.
This is the select in object:
SELECT
  "Postgres". "Public." "Importconfig." "Tables",
  "Postgres". "Public." "Importconfig." "Datavalue"
FROM "postgres". "Public". "Importconfig"
where "postgres". "public". "importconfig". "datavalue"> '"+ (Date) globalMap.get (" MaxDate ")) +"'
and under the scheme I use.
This is the error:
Exception in component tDBInput_2 (test)
org.postgresql.util.PSQLException: ERROR: input syntax not valid for date type: "" + (Date) globalMap.get ("MaxDate")) + ""
  Position: 203
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse (QueryExecutorImpl.java:2440)
at org.postgresql.core.v3.QueryExecutorImpl.processResults (QueryExecutorImpl.java:2183)
at org.postgresql.core.v3.QueryExecutorImpl.execute (QueryExecutorImpl.java308)
at org.postgresql.jdbc.PgStatement.executeInternal (PgStatement.java:441)
at org.postgresql.jdbc.PgStatement.execute (PgStatement.java:365)
at org.postgresql.jdbc.PgStatement.executeWithFlags (PgStatement.java307)
at org.postgresql.jdbc.PgStatement.executeCachedSql (PgStatement.java:293)
at org.postgresql.jdbc.PgStatement.executeWithFlags (PgStatement.java:270)
at org.postgresql.jdbc.PgStatement.executeQuery (PgStatement.java:224)
at local_project.test_0_1.test.tDBInput_2Process (test.java:1813)
at local_project.test_0_1.test.tDBInput_1Process (test.java:1201)
at local_project.test_0_1.test.runJobInTOS (test.java:2326)
at local_project.test_0_1.test.main (test.java:2171)

thank's

[Anonymous · Accepted solution]

Hi,

    You should use the PostgreSQL to_date function to convert the input string value instead of doing a java date conversion. The SQL query is first validated for correct syntax at java level and then at SQL level. Since you are adding a date directly to another string, its giving data type error.

eg:-   

SELECT to_date('20170103','YYYYMMDD');

In you case, the most easy way is to assign the maxdate to a context variable in string data type where value is in YYYYMMDD format.

"SELECT
  Tables,
  Datavalue
FROM postgres.Public.Importconfig
where datavalue> to_date('"+context.max_date+"','YYYYMMDD')"

Warm Regards,
Nikhil Thampi

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