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 Selecting Data Records 

When you load application data, you can select the data records according to their content.

The conditions defined here can be negated with NOT, linked with AND and OR, or encapsulated as required. The Loader evaluates the operators accordingly.

See also:

condition

if_condition

 

You want to load only those data records from the source data stream hotel.data into the target table hotelthat satisfy the following conditions:

The price in the data record is less than 400.00 (IF).
The name of the hotel is not City (NOT).
The hotel is located in BERLIN (AND).
The zip code is 13125 or 13126 (OR):

DATALOAD TABLE hotel
  IF POS 41-44 REAL < '400.00'
  AND
     POS 27-36 = 'BERLIN'
  AND
    (
POS 20-25 = '13125' OR POS 20-25 = '13126')
  AND NOT
     POS 09-18 = 'City'
      hno     01-04 INTEGER
      name    09-18
      zip     20-25 DECIMAL
      city    27-36
      price   41-44 REAL
INFILE 'hotel.data' FORMATTED

You want to load only those data records from the source file hotel.data into the target table hotel where the price is not more than 400.00:

DATALOAD TABLE hotel
  IF
NOT POS 41-44 REAL > '400.00'
      hno     01-04 INTEGER
      name    09-18
      zip     20-25 DECIMAL
      place     27-36
      price   41-44 REAL
INFILE 'hotel.data' FORMATTED

 

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