SYSCS_UTIL.IMPORT_DATA_EX

An extended version of SYSCS_UTIL.IMPORT_DATA that enables you to import data into specific columns without locking the target table. Use this procedure during long import operations when you require continued access to the table.

Syntax

SYSCS_UTIL.IMPORT_DATA (IN SCHEMANAME VARCHAR(128),
IN TABLENAME VARCHAR(128), IN INSERTCOLUMNS VARCHAR(32672),
IN COLUMNINDEXES VARCHAR(32672), IN FILENAME VARCHAR(32672),
IN COLUMNDELIMITER CHAR(1), IN CHARACTERDELIMITER CHAR(1),
IN CODESET VARCHAR(128), IN REPLACE SMALLINT,
IN LOCKTABLE SMALLINT, IN NUMTHREADS INTEGER, IN CASESENSITIVENAMES SMALLINT,
IN IMPORTCLASSNAME VARCHAR(32672), IN ERRORFILE VARCHAR(32672))

No result is returned from the procedure.

SCHEMANAME
Input argument of type VARCHAR(128) that specifies the schema of the table. Passing a NULL value uses the default schema name.
TABLENAME
Input argument of type VARCHAR (128) that specifies the table name of the table into which the data is to be imported. This table cannot be a system table or a declared temporary table. Passing a null results in an error.
INSERTCOLUMNS
Input argument of type VARCHAR (32762) that specifies the column names (separated by commas) of the table into which the data is to be imported. Passing a NULL value imports the data into all columns of the table.
COLUMNINDEXES
Input argument of type VARCHAR (32762) that specifies the indexes (numbered from 1 and separated by commas) of the input data fields to be imported. Passing a NULL value uses all input data fields in the file.
FILENAME
Input argument of type VARCHAR(32672) that specifies the file that contains the data to be imported. If you do not specify a path, the current working directory is used. Passing a NULL value will result in an error.
COLUMNDELIMITER
Input argument of type CHAR(1) that specifies a column delimiter. The specified character is used in place of a comma to signal the end of a column. Passing a NULL value uses the default value; the default value is a comma (,).
CHARACTERDELIMITER
Input argument of type CHAR(1) that specifies a character delimiter. The specified character is used in place of double quotation marks to enclose a character string. Passing a NULL value uses the default value; the default value is a double quotation mark (").
CODESET
Input argument of type VARCHAR(128) that specifies the code set of the data in the input file. The name of the code set should be one of the Java-supported character encodings. Data is converted from the specified code set to the database code set (utf-8). Passing a NULL value interprets the data file in the same code set as the JVM in which it is being executed.
REPLACE
SQLFire does not implement this argument; specify any value of type SMALLINT. Imported data is always added (inserted) to the target table without changing the existing table data. Use TRUNCATE TABLE if you want to clear existing table data before importing data.
LOCKTABLE
Input argument of type SMALLINT. With a non-zero value, this procedure operates similarly to SYSCS_UTIL.IMPORT_TABLE, and it locks the table during the import operation. Specify a value of zero to prevent SQLFire from locking the table during the import operation.
NUMTHREADS
Specifies the number of threads to use for the import process. Each thread processes a different portion of the file in parallel, and performs a bulk insert to the SQLFire system.
CASESENSITIVENAMES
Input argument of type SMALLINT. With a non-zero value, SQLFire treats the SCHEMANAME and TABLENAME arguments as case-sensitive. With a zero value, SQLFire treats the schema and table names as case insensitive.
IMPORTCLASSNAME
The argument can specify a custom class that extends com.vmware.sqlfire.load.Import. The specified class overrides the default import process, and can perform on-the-fly data conversions from external formats to formats that SQLFire supports. If you specify NULL for this argument, then SQLFire uses the default Import class.
ERRORFILE
This argument is reserved for future use. Always specify NULL for the argument in this release

If you create a schema, table, or column name as a non-delimited identifier, you must pass the name to the import procedure using all uppercase characters. If you created a schema, table, or column name as a delimited identifier, you must pass the name to the import procedure using the same case that was used when it was created.

Usage

For additional information on using this procedure see the section "Using the bulk import and export procedures" in the Apache Derby Tools and Utilities Guide.

Example

The following example imports some of the data fields from a delimited data file called data.del into the STAFF table. The import procedure uses the default import implementation with 2 threads, and does not lock the target table:
CALL SYSCS_UTIL.IMPORT_DATA
    (NULL, 'STAFF', null, '1,3,4', 'data.del', null, null, null, 0, 0, 2, 0, null, null)