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add some info about complex columns (access v2007+).

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James Ahlborn
2011-08-05 22:30:11 -04:00
parent bbb73a0a83
commit 126b0ddbb9
1 changed files with 5 additions and 1 deletions
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6
HACKING
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@@ -385,7 +385,10 @@ next_pg field.
| 0x00 | 4 bytes | autonumber | value for the next value of the | | 0x00 | 4 bytes | autonumber | value for the next value of the |
| | | | autonumber column, if any. 0 otherwise | | | | | autonumber column, if any. 0 otherwise |
| 0x01 | 1 byte | autonum_flag| 0x01 makes autonumbers work in access | | 0x01 | 1 byte | autonum_flag| 0x01 makes autonumbers work in access |
| ???? |15 bytes | unknown | unknown | | ???? | 3 bytes | unknown | unknown |
| 0x00 | 4 bytes | ct_autonum | autonumber value for complex type column(s) |
| | | | (shared across all columns in the table) |
| ???? | 8 bytes | unknown | unknown |
| 0x4e | 1 byte | table_type | 0x4e: user table, 0x53: system table | | 0x4e | 1 byte | table_type | 0x4e: user table, 0x53: system table |
| ???? | 2 bytes | max_cols | Max columns a row will have (deletions) | | ???? | 2 bytes | max_cols | Max columns a row will have (deletions) |
| ???? | 2 bytes | num_var_cols| Number of variable columns in table | | ???? | 2 bytes | num_var_cols| Number of variable columns in table |
@@ -412,6 +415,7 @@ next_pg field.
| ???? | 2 bytes | col_num | Column Number | | ???? | 2 bytes | col_num | Column Number |
| ???? | 2 bytes | misc | prec/scale (1 byte each), or sort order | | ???? | 2 bytes | misc | prec/scale (1 byte each), or sort order |
| | | | for textual columns(0x409=General) | | | | | for textual columns(0x409=General) |
| | | | or "complexid" for complex columns (4bytes)|
| ???? | 2 bytes | misc_ext | text sort order version num is 2nd byte | | ???? | 2 bytes | misc_ext | text sort order version num is 2nd byte |
| ???? | 1 byte | bitmask | See column flags below | | ???? | 1 byte | bitmask | See column flags below |
| ???? | 1 byte | misc_flags | 0x01 for compressed unicode | | ???? | 1 byte | misc_flags | 0x01 for compressed unicode |