Describes the columns of the tables defined in the catalog.
This view is part of the ANSI SQL-2 standard Information Schema.
Column |
Data Type |
N |
Description |
---|---|---|---|
RECORD_NUMBER |
integer |
n |
unique identifier for this record of metadata |
TABLE_CATALOG |
identifier |
n |
table catalog |
TABLE_SCHEMA |
identifier |
n |
table schema |
TABLE_NAME |
identifier |
n |
table name |
COLUMN_NAME |
identifier |
n |
column name |
ORDINAL_POSITION |
integer |
n |
ordinal position inside the containing table. |
COLUMN_DEFAULT |
long_alpha |
y |
default option in character representation. |
IS_NULLABLE |
yes_no |
n |
Y if Null is possible, N if not possible. |
DATA_TYPE_NUMBER |
short |
n |
data type (in integer form) |
DATA_TYPE |
enumeration |
n |
data type (in text form) |
CHARACTER_MAXIMUM_LENGTH |
long |
n |
physical length of data in characters. |
CHARACTER_OCTET_LENGTH |
long |
n |
physical length of data in bytes. |
NUMERIC_PRECISION |
long |
n |
precision of the data. |
NUMERIC_PRECISION_RADIX |
short |
n |
Radix
of the precision. Radix is 2 for floating point data |
NUMERIC_SCALE |
short |
n |
scale of the data. |
DATETIME_PRECISION |
short |
n |
precision of the timestamp |
SHORT_NAME |
char(2) |
y |
Adabas short name |
MU_POS |
short |
y |
Position of the column within an Adabas MU field. |
COLUMN_LEVEL |
short |
n |
0 = non MU/PE column, 1 = top level MU or PE, 2 = MU within PE |
COLUMN_TYPE |
enumeration |
n |
always returns "Ordinary" |
CHARACTER_SET_CATALOG |
identifier |
n |
character set of the catalog (currently not used) |
CHARACTER_SET_SCHEMA |
identifier |
n |
character set of the schema (currently not used) |
CHARACTER_SET_NAME |
identifier |
n |
character set of the name (currently not used) |
COLLATION_CATALOG |
identifier |
n |
collation of the catalog (currently not used) |
COLLATION_SCHEMA |
identifier |
n |
collation of the schema (currently not used) |
COLLATION_NAME |
identifier |
n |
collation of the name (currently not used) |
DOMAIN_CATALOG |
identifier |
n |
domain name of the catalog (currently not used) |
DOMAIN_SCHEMA |
identifier |
n |
domain name of the schema (currently not used) |
DOMAIN_NAME |
identifier |
n |
domain name (currently not used) |