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 |
