bug: DELETE OR UPDATE EMPTY TABLE in VFP

SERVER: MANDRIKE LINUX 8.1 + POSTGRESQL-7.4
CLIENT: WIN98+VFP8.0
ODBC: PSQLODBC 7.03.02 (2003/10/22)

PROBLEM: WHEN DELETE OR UPDATE A EMPTY TABLE VIA "SQLEXEC" IN VFP8, IT RETURN A ERROR.
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TABLE: MYTABLE, THERE IS A RECORD IN MYTABLE.
VFP> P_handle=SQLStringConnect("DRIVER={PostgreSQL};DATABASE=hotel;SERVER=192.168.1.1;PORT=5432;
UID=hotel;PWD=hotel;A6=;A7=100;A8=4096;B0=254;B1=8190;BI=2;C2=dd_;;CX=1b503ab")
VFP> ?SqlExec(p_handle,"DELETE FROM MYTABEL") -- mytable is not empty
1 -- SUCCESS
VFP> ?SqlExec(p_handle, "DELETE FROM MYTABLE") -- mytable is empty
-1 -- FAILURE
VFP> AERROR(A_E) -- GET ODBC ERROR
VFP> ?A_E(2) -- SHOW ODBC ERROR
Connectivity error: Unable to retrieve specific error information. Driver is probably out of resources

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I don't know why?

It's a ODBC TRACE LOG as below:
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.......
vfp8 fffb7033-fffa7bd3 ENTER SQLExecDirect
HSTMT 025D0998
UCHAR * 0x017BF174 [ -3] "delete from mytable\ 0"
SDWORD -3

vfp8 fffb7033-fffa7bd3 EXIT SQLExecDirect with return code 0 (SQL_SUCCESS)
HSTMT 025D0998
UCHAR * 0x017BF174 [ -3] "delete from mytable\ 0"
SDWORD -3

vfp8 fffb7033-fffa7bd3 ENTER SQLNumResultCols
HSTMT 025D0998
SWORD * 0x00B4F740

vfp8 fffb7033-fffa7bd3 EXIT SQLNumResultCols with return code 0 (SQL_SUCCESS)
HSTMT 025D0998
SWORD * 0x00B4F740 (0)

vfp8 fffb7033-fffa7bd3 ENTER SQLMoreResults
HSTMT 025D0998

vfp8 fffb7033-fffa7bd3 EXIT SQLMoreResults with return code 100 (SQL_NO_DATA_FOUND)
HSTMT 025D0998

vfp8 fffb7033-fffa7bd3 ENTER SQLFreeStmt
HSTMT 025D0998
UWORD 0 <SQL_CLOSE>

vfp8 fffb7033-fffa7bd3 EXIT SQLFreeStmt with return code 0 (SQL_SUCCESS)
HSTMT 025D0998
UWORD 0 <SQL_CLOSE>

vfp8 fffb7033-fffa7bd3 ENTER SQLFreeStmt
HSTMT 025D0998
UWORD 3 <SQL_RESET_PARAMS>

vfp8 fffb7033-fffa7bd3 EXIT SQLFreeStmt with return code 0 (SQL_SUCCESS)
HSTMT 025D0998
UWORD 3 <SQL_RESET_PARAMS>

vfp8 fffb7033-fffa7bd3 ENTER SQLExecDirect
HSTMT 025D0998
UCHAR * 0x017BF174 [ -3] "delete from mytable\ 0"
SDWORD -3

vfp8 fffb7033-fffa7bd3 EXIT SQLExecDirect with return code 100 (SQL_NO_DATA_FOUND)
HSTMT 025D0998
UCHAR * 0x017BF174 [ -3] "delete from mytable\ 0"
SDWORD -3

vfp8 fffb7033-fffa7bd3 ENTER SQLNumResultCols
HSTMT 025D0998
SWORD * 0x00B4F740

vfp8 fffb7033-fffa7bd3 EXIT SQLNumResultCols with return code -1 (SQL_ERROR)
HSTMT 025D0998
SWORD * 0x00B4F740

DIAG [S1010] [Microsoft][ODBC Driver Manager] Function sequence error (0)

vfp8 fffb7033-fffa7bd3 ENTER SQLCancel
HSTMT 025D0998

vfp8 fffb7033-fffa7bd3 EXIT SQLCancel with return code 0 (SQL_SUCCESS)
HSTMT 025D0998

vfp8 fffb7033-fffa7bd3 ENTER SQLErrorW
HENV 026CFF48
HDBC 025D0194
HSTMT 025D0998
WCHAR * 0x00B4E668 (NYI)
SDWORD * 0x00B4F718
WCHAR * 0x00B4E268
SWORD 512
SWORD * 0x00B4F71C

vfp8 fffb7033-fffa7bd3 EXIT SQLErrorW with return code 100 (SQL_NO_DATA_FOUND)
HENV 026CFF48
HDBC 025D0194
HSTMT 025D0998
WCHAR * 0x00B4E668 (NYI)
SDWORD * 0x00B4F718
WCHAR * 0x00B4E268
SWORD 512
SWORD * 0x00B4F71C

vfp8 fffb7033-fffa7bd3 ENTER SQLCancel
HSTMT 025D0998

vfp8 fffb7033-fffa7bd3 EXIT SQLCancel with return code 0 (SQL_SUCCESS)
HSTMT 025D0998

vfp8 fffb7033-fffa7bd3 ENTER SQLCancel
HSTMT 025D0998

vfp8 fffb7033-fffa7bd3 EXIT SQLCancel with return code 0 (SQL_SUCCESS)
HSTMT 025D0998

vfp8 fffb7033-fffa7bd3 ENTER SQLCancel
HSTMT 025D0998

vfp8 fffb7033-fffa7bd3 EXIT SQLCancel with return code 0 (SQL_SUCCESS)
HSTMT 025D0998

vfp8 fffb7033-fffa7bd3 ENTER SQLFreeStmt
HSTMT 025D0998
UWORD 1 <SQL_DROP>

vfp8 fffb7033-fffa7bd3 EXIT SQLFreeStmt with return code 0 (SQL_SUCCESS)
HSTMT 025D0998
UWORD 1 <SQL_DROP>

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致
礼！

freeman
flhotel(at)public(dot)xm(dot)fj(dot)cn