Column name
|
Data type
|
Description
|
TABLE_SYSID
|
INTEGER
|
System identifier for the table or view. |
COLUMN_NAME
|
VARCHAR(128)
|
The name of the table or view column. |
ORDINAL_POSITION
|
INTEGER
|
The ordinal position of the column in the table. The first column in the table is number 1. |
DOMAIN_SYSID
|
INTEGER
|
System identifier for the domain used by the column. |
COLLATION_SYSID
|
INTEGER
|
System identifier for the collation used by the column. |
DATA_TYPE
|
CHAR(30)
|
Identifies the data type of the column.
Can be one of the following:
"BIGINT"
"BINARY"
"BINARY VARYING"
"CHARACTER"
"CHARACTER VARYING"
"DATE"
"DECIMAL"
"DOUBLE PRECISION"
"FLOAT"
"INTEGER"
"INTERVAL"
"NUMERIC"
"REAL"
"SMALLINT"
"TIME"
"TIMESTAMP". |
INTERVAL_TYPE
|
CHAR(30)
|
For interval data types, this is a character string specifying the interval qualifier for the named interval data type, see the Mimer SQL Reference Manual. For other data types it is the NULL value. |
CHAR_MAX_LENGTH
|
INTEGER
|
For a character data type, this shows the maximum length in characters. For all other data types it is the NULL value. |
CHAR_OCTET_LENGTH
|
INTEGER
|
For a character data type, this shows the maximum length in octets. For all other data types it is the NULL value. (For single octet character sets, this is the same as CHAR_MAX_LENGTH). |
NUMERIC_PRECISION
|
INTEGER
|
For numeric data types, this shows the total number of decimal digits allowed in the column. For all other data types it is the NULL value. NUMERIC_PREC_RADIX indicates the units of measurement. |
NUMERIC_SCALE
|
INTEGER
|
This defines the total number of significant digits to the right of the decimal point. For INTEGER and SMALLINT, this is 0. For CHARACTER, CHARACTER VARYING, DATETIME, FLOAT, INTERVAL, REAL and DOUBLE PRECISION data types, it is the NULL value. |
NUMERIC_PREC_RADIX
|
INTEGER
|
For numeric data types, the value 10 is shown because NUMERIC_PRECISION specifies a number of decimal digits. For all other data types it is the NULL value. NUMERIC_PRECISION and NUMERIC_PREC_RADIX can be combined to calculate the maximum number that the column can hold. |
DATETIME_PRECISION
|
INTEGER
|
For DATE, TIME, TIMESTAMP and interval data types, this column contains the number of digits of precision for the fractional seconds component. For other data types it is the NULL value. |
INTERVAL_PRECISION
|
INTEGER
|
For interval data types, this is the number of significant digits for the interval leading precision, see the Mimer SQL Reference Manual. For other data types it is the NULL value. |
IS_NULLABLE
|
CHAR(3)
|
One of:
"NO" = the column is not nullable, according to the rules in the international standard
"YES" = the NULL value is allowed in the column. |
IS_UPDATABLE
|
CHAR(3)
|
One of:
"NO" = the column is not updatable
"YES" = the column is updatable. |
IS_INSTEAD_OF
|
CHAR(3)
|
One of:
"NO"
"YES". |
INTERNAL_LENGTH
|
INTEGER
|
Length in bytes of value. |
INTERNAL_OFFSET
|
INTEGER
|
Offset for value in record. |
INTERNAL_VC_OFFSET
|
INTEGER
|
Offset for field containing actual length for a varying length item. |
COLUMN_CARD
|
BIGINT
|
Number of unique values in column. |
COLUMN_CARD_NONULL
|
BIGINT
|
Number of values in column that are not null. |
COLUMN_LOW_VALUE
|
CHAR(16)
|
Lowest value in column. |
COLUMN_HIGH_VALUE
|
CHAR(16)
|
Highest value in column. |
COLUMN_DEFAULT
|
VARCHAR(2000)
|
This shows the default value for the column. If the default value is a character string, the value shown is the string enclosed in single quotes. If the default value is a numeric literal, the value is shown in its original character representation without enclosing quotes. If the default value is a DATE, TIME or TIMESTAMP, the value shown is the appropriate keyword (e.g. DATE) followed by the literal representation of the value enclosed in single quotes, see the Mimer SQL Reference Manual for a description of DATE, TIME and TIMESTAMP literals). If the default value is a pseudo-literal, the value shown is the appropriate keyword (e.g. CURRENT_DATE) without enclosing quotes. If the default value is the NULL value, the value shown is the keyword NULL without enclosing quotes. If the default value cannot be represented without truncation, then TRUNCATED is shown without enclosing quotes and the text will be stored in the SOURCE_DEFINITION table. If no default value was specified then its value is the NULL value. The value of COLUMN_DEF is syntactically suitable for use in specifying default-value in a CREATE TABLE or ALTER TABLE statement. |
REMARKS
|
VARCHAR(254)
|
A comment on the column. If no comment has been defined a zero length string is stored. |
