A numeric error is returned when using isql.

Hi

Here is a Numeric problem in case of using an isql.

[Problem]

A numeric error is returned when executing a select query via isql.

Error :-

========

1> select * from gjang

     CT-LIBRARY error: ct_results(): protocol specific layer: external error: There is a tds protocol error.

      An invalid numeric precision was received.

[Reproduction]

1. create table with default value of numeric on column.

    isql -Udba -Psql -Shpita_iqdemo

    1> create table gjang(c1 numeric)

    2> go

2. execute a select query via isql.

    1> select * from gjang

    2> go

[Cause]

An OpenClient (OC) CT-Lib(isql) is oriented for ASE, which has numeric/decimal datatype limited to scale/precision of 38/38.

Below error is returned when two numeric/decimal values exceeded the scale/precision limits of OpenClient(77/77).

[Error]

   An invalid numeric precision was received.

Please refer to below Numeric Data Types.

NumericDataTypes

(SyBooks Online)

Adaptive Server, SQL Anywhere, and SAP Sybase IQ have different default precision and scale.

• In Adaptive Server, the default is precision 18 scale 0.
• In SQL Anywhere, the default is precision 30 scale 6.
• In SAP Sybase IQ, the default is precision 126 scale 38. Because these defaults are too large for TDS and for some client tools, always specify a precision and scale for SAP Sybase IQ exact numeric types.

[Solution]

  1. When creating table, NUMERIC and DECIMAL datatypes with precision less than or equal to 77.

      Ex) create table gjang(c1 numeric(77));

  2. Use an IQ's default client such as dbisql /dbisqlc instead of isql.

  3. Set the below two options regarding precision with less than or equal to 77.

     - MAX_CLIENT_NUMERIC_SCALE

     - MAX_CLIENT_NUMERIC_PRECISION

      Ex) 1> set temporary option MAX_CLIENT_NUMERIC_PRECISION=76

            2> go

HTH

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Gi-Sung Jang