SQLColumns

関数

指定テーブルの列情報一覧を結果セットとして返す。

DLLODBC32.dll文字セットANSI (-A)呼出規約winapi

シグネチャ

// ODBC32.dll  (ANSI / -A)
#include <windows.h>

SHORT SQLColumns(
    void* StatementHandle,
    BYTE* CatalogName,   // optional
    SHORT NameLength1,
    BYTE* SchemaName,   // optional
    SHORT NameLength2,
    BYTE* TableName,   // optional
    SHORT NameLength3,
    BYTE* ColumnName,   // optional
    SHORT NameLength4
);

パラメーター

名前	型	方向
StatementHandle	void*	inout
CatalogName	BYTE*	inoptional
NameLength1	SHORT	in
SchemaName	BYTE*	inoptional
NameLength2	SHORT	in
TableName	BYTE*	inoptional
NameLength3	SHORT	in
ColumnName	BYTE*	inoptional
NameLength4	SHORT	in

戻り値の型: SHORT

各言語での呼び出し定義

// ODBC32.dll  (ANSI / -A)
#include <windows.h>

SHORT SQLColumns(
    void* StatementHandle,
    BYTE* CatalogName,   // optional
    SHORT NameLength1,
    BYTE* SchemaName,   // optional
    SHORT NameLength2,
    BYTE* TableName,   // optional
    SHORT NameLength3,
    BYTE* ColumnName,   // optional
    SHORT NameLength4
);

[DllImport("ODBC32.dll", CharSet = CharSet.Ansi, ExactSpelling = true)]
static extern short SQLColumns(
    IntPtr StatementHandle,   // void* in/out
    IntPtr CatalogName,   // BYTE* optional
    short NameLength1,   // SHORT
    IntPtr SchemaName,   // BYTE* optional
    short NameLength2,   // SHORT
    IntPtr TableName,   // BYTE* optional
    short NameLength3,   // SHORT
    IntPtr ColumnName,   // BYTE* optional
    short NameLength4   // SHORT
);

<DllImport("ODBC32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function SQLColumns(
    StatementHandle As IntPtr,   ' void* in/out
    CatalogName As IntPtr,   ' BYTE* optional
    NameLength1 As Short,   ' SHORT
    SchemaName As IntPtr,   ' BYTE* optional
    NameLength2 As Short,   ' SHORT
    TableName As IntPtr,   ' BYTE* optional
    NameLength3 As Short,   ' SHORT
    ColumnName As IntPtr,   ' BYTE* optional
    NameLength4 As Short   ' SHORT
) As Short
End Function

' StatementHandle : void* in/out
' CatalogName : BYTE* optional
' NameLength1 : SHORT
' SchemaName : BYTE* optional
' NameLength2 : SHORT
' TableName : BYTE* optional
' NameLength3 : SHORT
' ColumnName : BYTE* optional
' NameLength4 : SHORT
Declare PtrSafe Function SQLColumns Lib "odbc32" ( _
    ByVal StatementHandle As LongPtr, _
    ByVal CatalogName As LongPtr, _
    ByVal NameLength1 As Integer, _
    ByVal SchemaName As LongPtr, _
    ByVal NameLength2 As Integer, _
    ByVal TableName As LongPtr, _
    ByVal NameLength3 As Integer, _
    ByVal ColumnName As LongPtr, _
    ByVal NameLength4 As Integer) As Integer
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SQLColumns = ctypes.windll.odbc32.SQLColumns
SQLColumns.restype = ctypes.c_short
SQLColumns.argtypes = [
    ctypes.POINTER(None),  # StatementHandle : void* in/out
    ctypes.POINTER(ctypes.c_ubyte),  # CatalogName : BYTE* optional
    ctypes.c_short,  # NameLength1 : SHORT
    ctypes.POINTER(ctypes.c_ubyte),  # SchemaName : BYTE* optional
    ctypes.c_short,  # NameLength2 : SHORT
    ctypes.POINTER(ctypes.c_ubyte),  # TableName : BYTE* optional
    ctypes.c_short,  # NameLength3 : SHORT
    ctypes.POINTER(ctypes.c_ubyte),  # ColumnName : BYTE* optional
    ctypes.c_short,  # NameLength4 : SHORT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ODBC32.dll')
SQLColumns = Fiddle::Function.new(
  lib['SQLColumns'],
  [
    Fiddle::TYPE_VOIDP,  # StatementHandle : void* in/out
    Fiddle::TYPE_VOIDP,  # CatalogName : BYTE* optional
    Fiddle::TYPE_SHORT,  # NameLength1 : SHORT
    Fiddle::TYPE_VOIDP,  # SchemaName : BYTE* optional
    Fiddle::TYPE_SHORT,  # NameLength2 : SHORT
    Fiddle::TYPE_VOIDP,  # TableName : BYTE* optional
    Fiddle::TYPE_SHORT,  # NameLength3 : SHORT
    Fiddle::TYPE_VOIDP,  # ColumnName : BYTE* optional
    Fiddle::TYPE_SHORT,  # NameLength4 : SHORT
  ],
  Fiddle::TYPE_SHORT)

#[link(name = "odbc32")]
extern "system" {
    fn SQLColumns(
        StatementHandle: *mut (),  // void* in/out
        CatalogName: *mut u8,  // BYTE* optional
        NameLength1: i16,  // SHORT
        SchemaName: *mut u8,  // BYTE* optional
        NameLength2: i16,  // SHORT
        TableName: *mut u8,  // BYTE* optional
        NameLength3: i16,  // SHORT
        ColumnName: *mut u8,  // BYTE* optional
        NameLength4: i16  // SHORT
    ) -> i16;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ODBC32.dll", CharSet = CharSet.Ansi)]
public static extern short SQLColumns(IntPtr StatementHandle, IntPtr CatalogName, short NameLength1, IntPtr SchemaName, short NameLength2, IntPtr TableName, short NameLength3, IntPtr ColumnName, short NameLength4);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ODBC32_SQLColumns' -Namespace Win32 -PassThru
# $api::SQLColumns(StatementHandle, CatalogName, NameLength1, SchemaName, NameLength2, TableName, NameLength3, ColumnName, NameLength4)

#uselib "ODBC32.dll"
#func global SQLColumns "SQLColumns" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; SQLColumns StatementHandle, varptr(CatalogName), NameLength1, varptr(SchemaName), NameLength2, varptr(TableName), NameLength3, varptr(ColumnName), NameLength4   ; 戻り値は stat
; StatementHandle : void* in/out -> "sptr"
; CatalogName : BYTE* optional -> "sptr"
; NameLength1 : SHORT -> "sptr"
; SchemaName : BYTE* optional -> "sptr"
; NameLength2 : SHORT -> "sptr"
; TableName : BYTE* optional -> "sptr"
; NameLength3 : SHORT -> "sptr"
; ColumnName : BYTE* optional -> "sptr"
; NameLength4 : SHORT -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

出力引数:

#uselib "ODBC32.dll"
#cfunc global SQLColumns "SQLColumns" sptr, var, int, var, int, var, int, var, int
; res = SQLColumns(StatementHandle, CatalogName, NameLength1, SchemaName, NameLength2, TableName, NameLength3, ColumnName, NameLength4)
; StatementHandle : void* in/out -> "sptr"
; CatalogName : BYTE* optional -> "var"
; NameLength1 : SHORT -> "int"
; SchemaName : BYTE* optional -> "var"
; NameLength2 : SHORT -> "int"
; TableName : BYTE* optional -> "var"
; NameLength3 : SHORT -> "int"
; ColumnName : BYTE* optional -> "var"
; NameLength4 : SHORT -> "int"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。#uselib "ODBC32.dll"
#cfunc global SQLColumns "SQLColumns" sptr, sptr, int, sptr, int, sptr, int, sptr, int
; res = SQLColumns(StatementHandle, varptr(CatalogName), NameLength1, varptr(SchemaName), NameLength2, varptr(TableName), NameLength3, varptr(ColumnName), NameLength4)
; StatementHandle : void* in/out -> "sptr"
; CatalogName : BYTE* optional -> "sptr"
; NameLength1 : SHORT -> "int"
; SchemaName : BYTE* optional -> "sptr"
; NameLength2 : SHORT -> "int"
; TableName : BYTE* optional -> "sptr"
; NameLength3 : SHORT -> "int"
; ColumnName : BYTE* optional -> "sptr"
; NameLength4 : SHORT -> "int"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; SHORT SQLColumns(void* StatementHandle, BYTE* CatalogName, SHORT NameLength1, BYTE* SchemaName, SHORT NameLength2, BYTE* TableName, SHORT NameLength3, BYTE* ColumnName, SHORT NameLength4)
#uselib "ODBC32.dll"
#cfunc global SQLColumns "SQLColumns" intptr, var, int, var, int, var, int, var, int
; res = SQLColumns(StatementHandle, CatalogName, NameLength1, SchemaName, NameLength2, TableName, NameLength3, ColumnName, NameLength4)
; StatementHandle : void* in/out -> "intptr"
; CatalogName : BYTE* optional -> "var"
; NameLength1 : SHORT -> "int"
; SchemaName : BYTE* optional -> "var"
; NameLength2 : SHORT -> "int"
; TableName : BYTE* optional -> "var"
; NameLength3 : SHORT -> "int"
; ColumnName : BYTE* optional -> "var"
; NameLength4 : SHORT -> "int"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。; SHORT SQLColumns(void* StatementHandle, BYTE* CatalogName, SHORT NameLength1, BYTE* SchemaName, SHORT NameLength2, BYTE* TableName, SHORT NameLength3, BYTE* ColumnName, SHORT NameLength4)
#uselib "ODBC32.dll"
#cfunc global SQLColumns "SQLColumns" intptr, intptr, int, intptr, int, intptr, int, intptr, int
; res = SQLColumns(StatementHandle, varptr(CatalogName), NameLength1, varptr(SchemaName), NameLength2, varptr(TableName), NameLength3, varptr(ColumnName), NameLength4)
; StatementHandle : void* in/out -> "intptr"
; CatalogName : BYTE* optional -> "intptr"
; NameLength1 : SHORT -> "int"
; SchemaName : BYTE* optional -> "intptr"
; NameLength2 : SHORT -> "int"
; TableName : BYTE* optional -> "intptr"
; NameLength3 : SHORT -> "int"
; ColumnName : BYTE* optional -> "intptr"
; NameLength4 : SHORT -> "int"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	odbc32 = windows.NewLazySystemDLL("ODBC32.dll")
	procSQLColumns = odbc32.NewProc("SQLColumns")
)

// StatementHandle (void* in/out), CatalogName (BYTE* optional), NameLength1 (SHORT), SchemaName (BYTE* optional), NameLength2 (SHORT), TableName (BYTE* optional), NameLength3 (SHORT), ColumnName (BYTE* optional), NameLength4 (SHORT)
r1, _, err := procSQLColumns.Call(
	uintptr(StatementHandle),
	uintptr(CatalogName),
	uintptr(NameLength1),
	uintptr(SchemaName),
	uintptr(NameLength2),
	uintptr(TableName),
	uintptr(NameLength3),
	uintptr(ColumnName),
	uintptr(NameLength4),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // SHORT

function SQLColumns(
  StatementHandle: Pointer;   // void* in/out
  CatalogName: Pointer;   // BYTE* optional
  NameLength1: Smallint;   // SHORT
  SchemaName: Pointer;   // BYTE* optional
  NameLength2: Smallint;   // SHORT
  TableName: Pointer;   // BYTE* optional
  NameLength3: Smallint;   // SHORT
  ColumnName: Pointer;   // BYTE* optional
  NameLength4: Smallint   // SHORT
): Smallint; stdcall;
  external 'ODBC32.dll' name 'SQLColumns';

result := DllCall("ODBC32\SQLColumns"
    , "Ptr", StatementHandle   ; void* in/out
    , "Ptr", CatalogName   ; BYTE* optional
    , "Short", NameLength1   ; SHORT
    , "Ptr", SchemaName   ; BYTE* optional
    , "Short", NameLength2   ; SHORT
    , "Ptr", TableName   ; BYTE* optional
    , "Short", NameLength3   ; SHORT
    , "Ptr", ColumnName   ; BYTE* optional
    , "Short", NameLength4   ; SHORT
    , "Short")   ; return: SHORT

●SQLColumns(StatementHandle, CatalogName, NameLength1, SchemaName, NameLength2, TableName, NameLength3, ColumnName, NameLength4) = DLL("ODBC32.dll", "int SQLColumns(void*, void*, int, void*, int, void*, int, void*, int)")
# 呼び出し: SQLColumns(StatementHandle, CatalogName, NameLength1, SchemaName, NameLength2, TableName, NameLength3, ColumnName, NameLength4)
# StatementHandle : void* in/out -> "void*"
# CatalogName : BYTE* optional -> "void*"
# NameLength1 : SHORT -> "int"
# SchemaName : BYTE* optional -> "void*"
# NameLength2 : SHORT -> "int"
# TableName : BYTE* optional -> "void*"
# NameLength3 : SHORT -> "int"
# ColumnName : BYTE* optional -> "void*"
# NameLength4 : SHORT -> "int"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。