RAD Studio VCL Reference
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This metadata collection represents table columns in a database.
const Columns: string = "Columns";
string Columns = "Columns";
This metadata collection represents table columns in a database. The columns are:
Column Name |
Data Type |
Description |
CatalogName |
String |
The catalog name. |
SchemaName |
String |
The schema name. |
TableName |
String |
The table name. |
ColumnName |
String |
The column name. |
TypeName |
String |
The database specific data type name. |
Precision |
Int32 |
The precision of this type. For a string data type, this is the maximum number of characters. For a decimal types, this is the maximum number digits including digits from the scale. |
Scale |
Int32 |
The scale of a decimal type. |
Ordinal |
Int32 |
The position in the rows of the table starting with 1. |
DefaultValue |
String |
The default value. |
IsNullable |
Boolean |
Can accept NULL values. |
IsAutoIncrement |
Boolean |
Is an autoincrement value. |
MaxInline |
Int32 |
The maximal number of bytes to write into row. The rest of the data is handled as a blob (Blackfish SQL only). |
DbxDataType |
Int32 |
The DBX data type. |
IsFixedLength |
Boolean |
Holds fixed length data. |
IsUnicode |
Boolean |
Can hold unicode characters. |
IsLong |
Boolean |
Is a blob data type. |
IsUnsigned |
Boolean |
Is an unsigned numeric type. |
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