Difference between revisions of "System Capacities"
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Yvonne.milne (Talk | contribs) (→Tables and Indexes) |
Barrymavin (Talk | contribs) (→Tables and Indexes) |
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|valign="top"|Maximum table size||valign="top"|2^64 bytes | |valign="top"|Maximum table size||valign="top"|2^64 bytes | ||
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+ | |valign="top"|Maximum records per table||valign="top"|2,147,483,647 | ||
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|valign="top"|Maximum number of columns in a table||valign="top"|256 | |valign="top"|Maximum number of columns in a table||valign="top"|256 |
Latest revision as of 22:10, 2 January 2023
Contents
Fields and Variables
Feature | Capacity |
---|---|
Maximum character variable size | 64 KB |
Tables and Indexes
Feature | Capacity |
---|---|
Maximum table size | 2^64 bytes |
Maximum records per table | 2,147,483,647 |
Maximum number of columns in a table | 256 |
Maximum memo/object file size | 2^64 bytes |
Maximum single memo/object size | 100 MB |
Maximum index file size | 2^64 bytes |
Maximum index key length | 192 characters (index keys have an 8 character unique value postfixed, giving 200 characters in total). |
Maximum tag indexes in a multiple index file | 128 |
Maximum cursors/workareas | 255 (256 if no database is open, otherwise workarea 256 is reserved for the database). |
Identifiers
Feature | Capacity |
---|---|
Maximum procedure name length | 32 characters |
Maximum variable name length | 32 characters |
Maximum field name length | 32 characters |
Maximum index tag name length | 32 characters |
Programs, Procedures and Commands
Feature | Capacity |
---|---|
Maximum Lianja/VFP command length | 16 KB |
Maximum SQL SELECT statement length | 16 KB |
Others
Feature | Capacity |
---|---|
Sortable column in Grid Section | Sorted on first 192 characters |