Cloudscape System Tables,
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SYSCONGLOMERATES
Describes the conglomerates within the current database. A conglomerate is a unit of storage and is either a table or an index.
Column Name
|
Type
|
Length
|
Nullable
|
Contents
|
SCHEMAID
|
CHAR
|
36
|
false
|
schema id for the conglomerate
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TABLEID
|
CHAR
|
36
|
false
|
identifier for table (join with SYSTABLES.TABLEID)
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CONGLOMERATENUMBER
|
LONGINT
|
8
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false
|
conglomerate id for the conglomerate (heap or index)
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CONGLOMERATENAME
|
VARCHAR
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128
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true
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index name, if conglomerate is an index, otherwise the table ID
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ISINDEX
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BOOLEAN
|
1
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false
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whether or not conglomerate is an index
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DESCRIPTOR
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SERIALIZE (COM.cloudscape. types. IndexDescriptor)
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true
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system type describing the index
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ISCONSTRAINT
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BOOLEAN
|
1
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false
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whether or not conglomerate is a -system-generated index enforcing a constraint
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CONGLOMERATEID
|
CHAR
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36
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false
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unique identifier for the conglomerate
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Indexes
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SYSCONGLOMERATES_INDEX1 unique BTREE index on (CONGLOMERATEID)
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SYSCONGLOMERATES_INDEX2 unique BTREE index on (CONGLOMERATENAME, SCHEMAID)
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SYSCONGLOMERATES_INDEX3 BTREE index on (TABLEID)
Example Queries
The following query shows the key columns, their ordinal positions, and whether they are ascending or descending for an index named new_index in the table Flights, in the schema APP, in order:
SELECT
CONGLOMS.DESCRIPTOR.getKeyColumnPosition(COLS.COLUMNNUMBER)
AS ORDINAL_POSITION,
COLS.COLUMNNAME AS COLUMN_NAME,
(CONGLOMS.DESCRIPTOR.isAscending(
CONGLOMS.DESCRIPTOR.getKeyColumnPosition(
COLS.COLUMNNUMBER)) ? 'A' : 'D') AS ASC_OR_DESC
FROM SYS.SYSTABLES AS T,
SYS.SYSCONGLOMERATES AS CONGLOMS,
SYS.SYSCOLUMNS AS COLS,
SYS.SYSSCHEMAS AS S
WHERE T.TABLEID = CONGLOMS.TABLEID
AND T.TABLEID = COLS.REFERENCEID
AND CONGLOMS.CONGLOMERATENAME = 'NEW_INDEX'
AND CONGLOMS.ISINDEX
AND S.SCHEMAID = T.SCHEMAID
AND S.SCHEMANAME = 'APP'
AND (CONGLOMS.DESCRIPTOR IS NOT NULL ?
CONGLOMS.DESCRIPTOR.getKeyColumnPosition(COLS.COLUMNNUMBER)
: 0) <> 0
ORDER BY ORDINAL_POSITION
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