JetCreateTable Function

Article
08/26/2021

Applies to: Windows | Windows Server

JetCreateTable Function

The JetCreateTable function creates an empty table in an ESE database.

    JET_ERR JET_API JetCreateTable(
      __in          JET_SESID sesid,
      __in          JET_DBID dbid,
      __in          const tchar* szTableName,
      __in          unsigned long lPages,
      __in          unsigned long lDensity,
      __out         JET_TABLEID* ptableid
    );

Parameters

sesid

The database session context to use.

dbid

The database identifier to use.

szTableName

The name of the index to create.

The name must be formatted according to the following rules:

Be less than JET_cbNameMost, not including the terminating NULL.
Be made of the following set of characters: 0 through 9, A through Z, a through z, and all other punctuation except for "!" (exclamation point), "," (comma), "[" (opening bracket), and "]" (closing bracket) — that is, ASCII characters 0x20, 0x22 through 0x2d, 0x2f through 0x5a, 0x5c, 0x5d through 0x7f.
Not begin with a space.
Be made of at least one non-space character.

lPages

The initial number of database pages to allocate for the table. Specifying a number larger than one can reduce fragmentation if many rows are inserted into this table.

lDensity

The table density, in percentage points. The number must be either 0 or in the range of 20 through 100. Passing 0 means that the default value should be used. The default is 80.

ptableid

On success, the table identifier is returned in this field. The value is undefined if the API does not return JET_errSuccess.

Return Value

This function returns the JET_ERR datatype with one of the following return codes. For more information about the possible ESE errors, see Extensible Storage Engine Errors and Error Handling Parameters.

Return code	Description
JET_errSuccess	The operation completed successfully.
JET_errCallbackNotResolved	The callback function could not be resolved. The DLL might not have been found, or the function in the DLL might not have been found. With sufficient logging enabled, the event log will provide more details.
JET_errCannotIndex	An attempt was made to index over an escrow-update or SLV column (note that SLV columns are deprecated).
JET_errCannotNestDDL	If ptablecreate->grbit specifies JET_bitTableCreateTemplateTable, but ptablecreate->szTemplateTableName is set to NULL.
JET_errColumnDuplicate	A column already exists.
JET_errColumnNotFound	An attempt was made to index over a non-existent column. Attempting to conditionally index over a non-existent column can also produce this error.
JET_errColumnRedundant	An attempt was made to add a redundant column. There should be no more than one autoincrement column, and no more than one version column per table.
JET_errDensityInvalid	An invalid density was passed in the ulDensity member in the JET_TABLECREATE or JET_TABLECREATE2 structure.
JET_errDDLNotInheritable	Signifies that the table named in the szTemplateTableName member of the JET_TABLECREATE structure was not a marked as a template table (that is, that table did not have JET_bitTableCreateTemplateTable set).
JET_errIndexDuplicate	An attempt was made to define two identical indexes.
JET_errIndexHasPrimary	An attempt was made to specify more than one primary index for a table. A table must have exactly one primary index. If no primary index is specified, the database engine will transparently create one.
JET_errIndexInvalidDef	An invalid index definition was specified. Some of the possible reasons for receiving this error are: A primary index is conditional (that is, the grbit member of the JET_INDEXCREATE structure has JET_bitIndexPrimary set, and cConditionalColumn member of the JET_INDEXCREATE structure is greater than zero). Windows Server 2003 and later. Attempting to create a tuple index with tuple limits, but without passing the ptuplelimits member in the JET_INDEXCREATE structure (that is, the grbit member of the JET_INDEXCREATE structure has JET_bitIndexTupleLimits set, but the ptuplelimits pointer is NULL). Passing in an invalid key definition in the szKey member of the JET_INDEXCREATE structure. See JET_INDEXCREATE for a discussion of valid definitions. Setting the cbVarSegMac member in JET_INDEXCREATE to be greater than JET_cbPrimaryKeyMost (for a primary index) or greater than JET_cbSecondaryKeyMost (for a secondary index). Passing an invalid combination for a user-defined Unicode index (one which has the JET_bitIndexUnicode bit set in the grbit member of JET_INDEXCREATE). Some common causes include the pidxunicode member of the JET_INDEXCREATE structure is NULL, or the LCID specified in the pidxunicode structure is invalid. Specifying a multi-valued column for a primary index. Trying to index too many conditional columns. The cConditionalColumn member of the JET_INDEXCREATE structure must not be greater than JET_ccolKeyMost.
JET_errIndexTuplesInvalidLimits	Windows XP and later. A JET_TUPLELIMITS structure was specified, and its limits are not supported. See the remarks section of the JET_TUPLELIMITS structure.
JET_errIndexTuplesNonUniqueOnly	Windows XP and later. A tuple index cannot be unique (that is, the grbit member of the JET_INDEXCREATE structure must not have both JET_bitIndexPrimary and JET_bitIndexUnique set).
JET_errIndexTuplesOneColumnOnly	Windows XP and later. A tuple index can only be over a single column (that is, if the grbit member of the JET_INDEXCREATE structure has JET_bitIndexTuples set, and the szKey member of the JET_INDEXCREATE structure specifies more than one column).
JET_errIndexTuplesSecondaryIndexOnly	Windows XP and later. A tuple index cannot be a primary index (that is, the grbit member of the JET_INDEXCREATE structure must not have both JET_bitIndexPrimary and JET_bitIndexTuples set).
JET_errIndexTuplesVarSegMacNotAllowed	Windows XP and later. A tuple index does not allow the cbVarSegMac member of the JET_INDEXCREATE structure to be set.
JET_errIndexTuplesTextColumnsOnly	Windows XP and later. A tuple index can only be on a text or Unicode column. An attempt to index other columns (such as binary columns) will result in JET_errIndexTuplesTextColumnsOnly.
JET_errInTransaction	An attempt was made to create an index without version information while in a transaction.
JET_errInvalidCodePage	The cp member of the JET_COLUMNCREATE structure was not set to a valid code page. The only valid values for text columns are English (1252) and Unicode (1200). A value of 0 means the default will be used (English, 1252).
JET_errInvalidColumnType	The coltyp member of the JET_COLUMNCREATE structure was not set to a valid column type.
JET_errInvalidCreateIndex	Some of the reasons this error may occur: The rgindexcreate member of the JET_TABLECREATE2 structure was set to NULL. The rgcolumncreate member of the JET_TABLECREATE2 structure was set to NULL. The cbStruct member of a JET_INDEXCREATE structure was not set to a valid value.
JET_errInvalidgrbit	An invalid combination of grbit members was specified in JET_TABLECREATE or JET_TABLECREATE2. The index definition is invalid because the grbit member contains inconsistent values. Some possible reasons are: A primary index had an ignore bit specified (that is, JET_bitIndexPrimary was passed with JET_bitIndexIgnoreNull, JET_bitIndexIgnoreAnyNull, or JET_bitIndexIgnoreFirstNull). An empty index does not ignore any NULL members (that is, the grbit member of the JET_INDEXCREATE structure has JET_bitIndexEmpty set, but does not have JET_bitIndexIgnoreAnyNull set). Passing in a JET_CONDITIONALCOLUMN structure with an invalid grbit member.
JET_errInvalidLanguageId	An invalid Locale ID (LCID) was passed in (either through the lcid member of the JET_UNICODEINDEX structure which is pointed to by the pidxunicode member in the JET_INDEXCREATE structure, or through the lcid field of the JET_INDEXCREATE structure).
JET_errInvalidParameter	An invalid parameter was given. Some possible reasons are: The rgcolumncreate member of the JET_TABLECREATE2 structure is NULL. The cbStruct member of one of the JET_COLUMNCREATE structures given in the rgcolumncreate member of the JET_TABLECREATE2 structure was not set to sizeof( JET_COLUMNCREATE ). The cbKey member of a JET_INDEXCREATE structure is set to zero. The cbStruct member of a JET_INDEXCREATE structure is not set to sizeof( JET_INDEXCREATE ).
JET_errRecordTooBig	The record is too big. The sum of the cbMax member of the JET_COLUMNCREATE structure for all fixed columns must not exceed a certain value.
JET_errTableDuplicate	The table already exists.
JET_errTooManyColumns	An attempt was made to add too many columns to the table. A table can have no more than JET_ccolFixedMost fixed columns, no more than JET_ccolVarMost variable-length columns, and no more than JET_ccolTaggedMost tagged columns.
JET_errUnicodeTranslationFail	An error occurred attempting to normalize a Unicode column. This can be caused by running out of system resources.

Remarks

JetCreateTable creates a table which does not contain any columns. To add columns, see JetAddColumn.

Internally, JetCreateTable calls JetCreateTableColumnIndex2, filling in a JET_TABLECREATE2 structure with:

JET_TABLECREATE2.cbStruct = sizeof( JET_TABLECREATE2 )
JET_TABLECREATE2.szTableName = szTableName
JET_TABLECREATE2.ulPages = lPage
JET_TABLECREATE2.ulDensity = lDensity
JET_TABLECREATE2.tableid = JET_tableidNil

All the other fields of the internal JET_TABLECREATE2 structure are set to zero or NULL. On output, ptableid will be set to JET_TABLECREATE2.tableid.

See JetCreateTableColumnIndex2 for more details.

Like JetOpenTable, when the application is done using the returned tableid member from the JET_TABLECREATE2 structure, it should usually be closed with JetCloseTable.

Requirements

Requirement	Value
Client	Requires Windows Vista, Windows XP, or Windows 2000 Professional.
Server	Requires Windows Server 2008, Windows Server 2003, or Windows 2000 Server.
Header	Declared in Esent.h.
Library	Use ESENT.lib.
DLL	Requires ESENT.dll.
Unicode	Implemented as JetCreateTableW (Unicode) and JetCreateTableA (ANSI).

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JetCreateTable Function