SQLDA Record Usage
You can use the SQL Descriptor Area (SQLDA) to pass type and size information about an SQL statement, an Ingres form, or an Ingres table field, between Ingres and your program.
In order to use the SQLDA, issue the include sqlda statement in the COBOL program units that reference the SQLDA. The include sqlda statement generates a COBOL COPY directive of a file that defines an external reference to an SQLDA‑like COBOL record. The file declares a COBOL record called SQLDA.
You can also code this record directly, instead of using the include sqlda statement. You can choose any name for the structure and you can declare more than one in a single program.
The definition of the SQLDA (as specified in the COPY file) is shown below:
Windows:
*
* SQL Descriptor Area
*
78 IISQ-MAX-COLS VALUE 1024.
01 SQLDA.
05 SQLDAID PIC X(8).
05 SQLDABC PIC S9(9) USAGE COMP-5.
05 SQLN PIC S9(4) USAGE COMP-5
VALUE IISQ-MAX-COLS.
05 SQLDAID PIC X(8).
05 SQLDABC PIC S9(9) USAGE COMP-5.
05 SQLN PIC S9(4) USAGE COMP-5
VALUE IISQ-MAX-COLS.
05 SQLD PIC S9(4) USAGE COMP-5.
05 SQLVAR OCCURS IISQ-MAX-COLS TIMES.
07 SQLTYPE PIC S9(4) USAGE COMP-5.
07 SQLLEN PIC S9(4) USAGE COMP-5.
07 SQLDATA USAGE POINTER.
07 SQLIND USAGE POINTER.
07 SQLNAME.
49 SQLNAMEL PIC S9(4) USAGE COMP-5.
49 SQLNAMEC PIC X(34).
*
05 SQLVAR OCCURS IISQ-MAX-COLS TIMES.
07 SQLTYPE PIC S9(4) USAGE COMP-5.
07 SQLLEN PIC S9(4) USAGE COMP-5.
07 SQLDATA USAGE POINTER.
07 SQLIND USAGE POINTER.
07 SQLNAME.
49 SQLNAMEL PIC S9(4) USAGE COMP-5.
49 SQLNAMEC PIC X(34).
*
* SQLDA Type Codes
* Type Name Value Length
* --------- ----- ------
* DATE 3 25
* MONEY 5 8
* DECIMAL 10 SQLLEN = 256*P+S
* CHAR 20 SQLLEN
* VARCHAR 21 SQLLEN
* BYTE 23 SQLLEN
* BYTE VARYING 24 SQLLEN
* LONG BYTE 25 SQLLEN
* INTEGER 30 SQLLEN
* FLOAT 31 SQLLEN
* 4GL OBJECT 45 SQLLEN
* TABLE-FIELD 52 0
* Type Name Value Length
* --------- ----- ------
* DATE 3 25
* MONEY 5 8
* DECIMAL 10 SQLLEN = 256*P+S
* CHAR 20 SQLLEN
* VARCHAR 21 SQLLEN
* BYTE 23 SQLLEN
* BYTE VARYING 24 SQLLEN
* LONG BYTE 25 SQLLEN
* INTEGER 30 SQLLEN
* FLOAT 31 SQLLEN
* 4GL OBJECT 45 SQLLEN
* TABLE-FIELD 52 0
*
78 IISQ-DTE-TYPE VALUE 3.
78 IISQ-DTE-LEN VALUE 25.
78 IISQ-MNY-TYPE VALUE 5.
78 IISQ-DEC-TYPE VALUE 10.
78 IISQ-CHA-TYPE VALUE 20.
78 IISQ-VCH-TYPE VALUE 21.
78 IISQ-BYTE-TYPE VALUE 23.
78 IISQ-VBYTE-TYPE VALUE 24.
78 IISQ-LBYTE-TYPE VALUE 25.
78 IISQ-INT-TYPE VALUE 30.
78 IISQ-FLT-TYPE VALUE 31.
78 IISQ-OBJ-TYPE VALUE 45.
78 IISQ-TBL-TYPE VALUE 52.
78 IISQ-LVCH-TYPE VALUE 22.
78 IISQ-DTE-TYPE VALUE 3.
78 IISQ-DTE-LEN VALUE 25.
78 IISQ-MNY-TYPE VALUE 5.
78 IISQ-DEC-TYPE VALUE 10.
78 IISQ-CHA-TYPE VALUE 20.
78 IISQ-VCH-TYPE VALUE 21.
78 IISQ-BYTE-TYPE VALUE 23.
78 IISQ-VBYTE-TYPE VALUE 24.
78 IISQ-LBYTE-TYPE VALUE 25.
78 IISQ-INT-TYPE VALUE 30.
78 IISQ-FLT-TYPE VALUE 31.
78 IISQ-OBJ-TYPE VALUE 45.
78 IISQ-TBL-TYPE VALUE 52.
78 IISQ-LVCH-TYPE VALUE 22.
Linux:
*
* SQL Descriptor Area
*
78 IISQ-MAX-COLS VALUE 1024.
01 SQLDA.
05 SQLDAID PIC X(8).
05 SQLDABC PIC S9(9) USAGE COMP-5.
05 SQLN PIC S9(4) USAGE COMP-5
VALUE IISQ-MAX-COLS.
05 SQLD PIC S9(4) USAGE COMP-5.
05 SQLVAR OCCURS IISQ-MAX-COLS TIMES.
07 SQLTYPE PIC S9(4) USAGE COMP-5.
07 SQLLEN PIC S9(4) USAGE COMP-5.
07 SQLDATA USAGE POINTER.
07 SQLIND USAGE POINTER.
07 SQLNAME.
49 SQLNAMEL PIC S9(4) USAGE COMP-5.
49 SQLNAMEC PIC X(34).
*
05 SQLDAID PIC X(8).
05 SQLDABC PIC S9(9) USAGE COMP-5.
05 SQLN PIC S9(4) USAGE COMP-5
VALUE IISQ-MAX-COLS.
05 SQLD PIC S9(4) USAGE COMP-5.
05 SQLVAR OCCURS IISQ-MAX-COLS TIMES.
07 SQLTYPE PIC S9(4) USAGE COMP-5.
07 SQLLEN PIC S9(4) USAGE COMP-5.
07 SQLDATA USAGE POINTER.
07 SQLIND USAGE POINTER.
07 SQLNAME.
49 SQLNAMEL PIC S9(4) USAGE COMP-5.
49 SQLNAMEC PIC X(34).
*
* SQLDA Type Codes
* Type Name Value Length
* --------- ----- ------
* DATE 3 25
* MONEY 5 8
* DECIMAL 10 SQLLEN = 256*P+S
* CHAR 20 SQLLEN
* VARCHAR 21 SQLLEN
* BYTE 23 SQLLEN
* BYTE VARYING 24 SQLLEN
* LONG BYTE 25 SQLLEN
* INTEGER 30 SQLLEN
* FLOAT 31 SQLLEN
* 4GL OBJECT 45 SQLLEN
* TABLE-FIELD 52 0
* Type Name Value Length
* --------- ----- ------
* DATE 3 25
* MONEY 5 8
* DECIMAL 10 SQLLEN = 256*P+S
* CHAR 20 SQLLEN
* VARCHAR 21 SQLLEN
* BYTE 23 SQLLEN
* BYTE VARYING 24 SQLLEN
* LONG BYTE 25 SQLLEN
* INTEGER 30 SQLLEN
* FLOAT 31 SQLLEN
* 4GL OBJECT 45 SQLLEN
* TABLE-FIELD 52 0
*
78 IISQ-DTE-TYPE VALUE 3.
78 IISQ-DTE-LEN VALUE 25.
78 IISQ-MNY-TYPE VALUE 5.
78 IISQ-DEC-TYPE VALUE 10.
78 IISQ-CHA-TYPE VALUE 20.
78 IISQ-VCH-TYPE VALUE 21.
78 IISQ-BYTE-TYPE VALUE 23.
78 IISQ-VBYTE-TYPE VALUE 24.
78 IISQ-LBYTE-TYPE VALUE 25.
78 IISQ-INT-TYPE VALUE 30.
78 IISQ-FLT-TYPE VALUE 31.
78 IISQ-OBJ-TYPE VALUE 45.
78 IISQ-TBL-TYPE VALUE 52.
78 IISQ-LVCH-TYPE VALUE 22.
78 IISQ-DTE-TYPE VALUE 3.
78 IISQ-DTE-LEN VALUE 25.
78 IISQ-MNY-TYPE VALUE 5.
78 IISQ-DEC-TYPE VALUE 10.
78 IISQ-CHA-TYPE VALUE 20.
78 IISQ-VCH-TYPE VALUE 21.
78 IISQ-BYTE-TYPE VALUE 23.
78 IISQ-VBYTE-TYPE VALUE 24.
78 IISQ-LBYTE-TYPE VALUE 25.
78 IISQ-INT-TYPE VALUE 30.
78 IISQ-FLT-TYPE VALUE 31.
78 IISQ-OBJ-TYPE VALUE 45.
78 IISQ-TBL-TYPE VALUE 52.
78 IISQ-LVCH-TYPE VALUE 22.
Structure Definition and Usage Notes:
• The sqlvar array (COBOL table) has 1024 elements. If you code your own SQLDA, you can supply a different number of elements.
• The sqlvar array begins at subscript 1.
• The sqldata and sqlind fields are declared with USAGE POINTER. These must be set to point at the addresses of other data items using the COBOL SET statement with the ADDRESS OF clause (Linux).
• If your program declares its own SQLDA record, you must confirm that the record layout is identical to that of the Ingres‑defined SQLDA record, although you can declare a different number of sqlvar elements.
• The nested group sqlname is a varying length character string consisting of a length and data area. The sqlnamec field contains the name of a result field or column after the describe (or prepare into) statement. The length of the name is specified by sqlnamel. The characters in the sqlnamec field are blank padded. The sqlname group may also be set by a program using Dynamic FRS. The program is not required to pad sqlnamec with blanks. see How to Set SQLNAME for Dynamic FRS in this chapter.
• The comment listing the type codes represents the types that are returned by the describe statement and the types used by the program when using an SQLDA to retrieve or set data. The type code 52 indicates a table field and is set by the FRS when describing a form that contains a table field.
• If you code your own SQLDA, you can declare it EXTERNAL and share it with other programs.
• Because the SQLDA is passed directly to Ingres without preprocessor intervention (and generated MOVE statements), all numeric fields of the SQLDA are declared as COMP‑5. If, on your machine, the internal storage format of a USAGE COMP data item is identical to the storage format of USAGE COMP‑5 then you may use either USAGE COMP or USAGE COMP‑5 for the corresponding SQLDA fields when you code your own. If you use USAGE COMP and the internal storage format is not the same then Ingres issues runtime errors about unknown data type codes and invalid data type lengths.
Last modified date: 08/14/2024