File Management - IBM

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72 File Management V4R5 Table 9. Copy Operations (continued) From-Files To-Files : 1 2 3 4 5 If the from-file and the to-file are both diskette files, the to-file must be spooled. If the to-file does not exist before the copy operation, the copy operation will create a physical file as the to-file if you specified: v CRTFILE(*YES) on the CPYF command and the from-file is a physical or logical file. v CRTFILE(*YES) on the CPYFRMQRYF command. Open query files can only be copied by using the CPYFRMQRYF command. CPYFRMQRYF is not allowed for open query files that use DDM files. If TOFILE(*PRINT) is specified, the from-file records are copied to the IBM-supplied printer device file QSYSPRT and formatted according to the OUTFMT parameter. An inline data file (which is handled like a device file) is included as part of a batch job when the job is read by a reader program. While copying records, some of the copy commands can perform the following functions: v Copy from or to the first file member, a particular file member, a generic set of members, or all file members (FROMMBR and TOMBR parameters). v Add a member to a physical to-file if the member does not exist. v Add records to an existing file member, replace the contents of an existing member (MBROPT parameter), or update duplicate key records in a to-file member. v Select certain records to copy by one of the following methods: – Selecting records by record format name when a multi-format logical file is copied (RCDFMT parameter). – Specifying records by starting at a relative record number and ending at a relative record number (FROMRCD and TORCD parameters). – Specifying records by starting with a specific record key value and ending with another specific record key value (FROMKEY and TOKEY parameters). – Specifying the number of records that you want to copy (NBRRCDS parameter). – Selecting records by the contents of one or more character positions in the record or in a field in the record (INCCHAR parameter). – Selecting records according to the values that are contained in one or more fields in the record (INCREL parameter). – Disregard or include deleted records in the from-file during the copy if processing the from-file in arrival sequence (COMPRESS parameter). v Print copied records, excluded records, or error records (PRINT parameter) in a specified format (OUTFMT parameter). v Copy records whose from-file and to-file record formats are different (FMTOPT parameter). When formats are different, you can perform any of the following actions: – Map fields whose names are the same in the from-file and to-file record formats and whose field attributes are compatible (*MAP value). – Drop fields in the from-file record format that do not exist in the to-file record format (*DROP value).
– Copy data directly (left to right) disregarding any differences (*NOCHK value). v Copy from a source file to a data file or from a data file to a source file. If the from-file or to-file is a device file, this function is automatic. If both files are database files, you must specify FMTOPT(*CVTSRC). v Change sequence numbers and zero dates in the sequence number and date source fields when copying to a source physical file (SRCOPT parameter). When renumbering is to be done, the starting sequence number and the increment value can be specified (SRCSEQ parameter). v End the copy after a specified number of recoverable errors are encountered (ERRLVL parameter). v Create the to-file as part of the copy operation (CRTFILE parameter). See the CL Reference for the specific parameters supported by each copy command. Copying files: supported functions The following tables ( Table 10 and Table 11 on page 75) provide a summary of the specific copy functions (using the copy commands) you can use for copying records by the types of files being copied from and to. The functions with their associated parameters are listed down the left side, and the file types (and if each can be a from-file and a to-file) are shown across the top. An X indicates that the associated parameter is valid for the type and use of file under which it occurs. Chapter 4. Copying files 73
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AS/400e File Management Version 4
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© Copyright International Business
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| | | | | Special considerations fo
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vi File Management V4R5
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viii File Management V4R5
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2 File Management V4R5 v Distribute
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Table 1. File Types and Their Main
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Table 2. High-Level Languages and T
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| | Table 3. High-Level Languages a
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Add Add new records to the file. Up
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| Sharing files 12 File Management
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14 File Management V4R5 For example
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16 File Management V4R5 File resour
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Application 1 Application 2 Applica
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Preventing errors when copying file
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elationship. However, the copy oper
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Preventing allocation errors when c
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128 File Management V4R5 - A depend
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Year 2000 support: date, time, and
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FLD TYPE DATFMT SPECIFIED FIELD LEN
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Restrictions for Year 2000 support
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| | | | | | | | | | AS/400 supports
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Using the Copy From Import File (CP
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externally described database file
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144 File Management V4R5 v Two adja
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- Description: This Field Definitio
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Date Fields All date formats suppor
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150 File Management V4R5 Figure 14
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devices that process the same type
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Default system output queues 154 Fi
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Spooling writers 156 File Managemen
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value of *OWNER indicates that only
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160 File Management V4R5 You can us
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162 File Management V4R5 QFNC Finan
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164 File Management V4R5 If a job b
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Spooling subsystem 166 File Managem
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168 File Management V4R5 the DLTSPL
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Table 20. Open Feedback Area (conti
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Table 20. Open Feedback Area (conti
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Table 21. Device Definition List (c
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Table 23. Common I/O Feedback Area
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Table 24. I/O Feedback Area for ICF
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Table 24. I/O Feedback Area for ICF
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Table 26. I/O Feedback Area for Dat
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Table 27. Get Attributes (continued
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(SBCS) A B 1 2 1-Byte Code X’C1
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200 File Management V4R5 Table 28.
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Invalid double-byte code and undefi
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DBCS device file support 204 File M
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206 File Management V4R5 - Create D
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DBCS display support 208 File Manag
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210 File Management V4R5 When you c
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DBCS font tables 212 File Managemen
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214 File Management V4R5 CPYIGCTBLI
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DBCS font files DBCS sort tables 21
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Finding out if a DBCS sort table ex
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220 File Management V4R5 v When you
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User-created dictionary for DBCS 22
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Work with DBCS conversion dictionar
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another alphanumeric entry in the e
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Figure 22. Display Produced by the
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230 File Management V4R5 1. Positio
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Figure 23. Example Screen 1 Positio
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Figure 27. Example Screen 5 234 Fil
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236 File Management V4R5 - If you t
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contains information on data descri
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240 File Management V4R5
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CHGWTR (Change Writer) command 157
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command, CL 160, 212 (continued) Tr
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DBCS conversion dictionary (continu
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file object authority 8 file proces
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output queue (continued) changing 1
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estriction DBCS files 206 deleting
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WRKOUTQD (Work with Output Queue De
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