05-17-2016
Not clear, your requirements are contradictory: you want "to remove all lines" (= rows in DB speak?), but in your expected result, the lines are still there but substrings of the link column have been have been eliminated.
And, the statement "it is not functioning" doesn't help either to determine what you're after.
For the second interpretation (based on your exp. result), you'll neet to UPDATE the table, not DELETE FROM it.
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LEARN ABOUT PHP
db2_special_columns
DB2_SPECIAL_COLUMNS(3) 1 DB2_SPECIAL_COLUMNS(3)
db2_special_columns - Returns a result set listing the unique row identifier columns for a table
SYNOPSIS
resource db2_special_columns (resource $connection, string $qualifier, string $schema, string $table_name, int $scope)
DESCRIPTION
Returns a result set listing the unique row identifier columns for a table.
PARAMETERS
o $connection
- A valid connection to an IBM DB2, Cloudscape, or Apache Derby database.
o $qualifier
- A qualifier for DB2 databases running on OS/390 or z/OS servers. For other databases, pass NULL or an empty string.
o $schema
- The schema which contains the tables.
o $table_name
- The name of the table.
o $scope
- Integer value representing the minimum duration for which the unique row identifier is valid. This can be one of the following
values:
+--------------+--------------------------------------+---+
|Integer value | | |
| | | |
| | SQL constant | |
| | | |
| | Description | |
| | | |
+--------------+--------------------------------------+---+
| 0 | | |
| | | |
| | SQL_SCOPE_CURROW | |
| | | |
| | Row identifier is valid only while | |
| | the cursor is positioned on the row. | |
| | | |
| 1 | | |
| | | |
| | SQL_SCOPE_TRANSACTION | |
| | | |
| | Row identifier is valid for the | |
| | duration of the transaction. | |
| | | |
| 2 | | |
| | | |
| | SQL_SCOPE_SESSION | |
| | | |
| | Row identifier is valid for the | |
| | duration of the connection. | |
| | | |
+--------------+--------------------------------------+---+
RETURN VALUES
Returns a statement resource with a result set containing rows with unique row identifier information for a table. The rows are composed
of the following columns:
+------------+---------------------------------------------------+
|Column name | |
| | |
| | Description |
| | |
+------------+---------------------------------------------------+
| SCOPE | |
| | |
| | |
| | |
| | box, tab (|); c | c | c | . T{ Integer |
| | value |
| | |
| | SQL constant |
| | |
| | Description |
| | |
+------------+---------------------------------------------------+
| 0 | |
| | |
| | SQL_SCOPE_CURROW |
| | |
| | Row identifier is valid only while the cursor is |
| | positioned on the row. |
| | |
| 1 | |
| | |
| | SQL_SCOPE_TRANSACTION |
| | |
| | Row identifier is valid for the duration of the |
| | transaction. |
| | |
| 2 | |
| | |
| | SQL_SCOPE_SESSION |
| | |
| | Row identifier is valid for the duration of the |
| | connection. |
| | |
+------------+---------------------------------------------------+
T} T{ COLUMN_NAME
T} |T{ Name of the unique column.
T} T{ DATA_TYPE
T} |T{ SQL data type for the column.
T} T{ TYPE_NAME
T} |T{ Character string representation of the SQL data type for the column.
T} T{ COLUMN_SIZE
T} |T{ An integer value representing the size of the column.
T} T{ BUFFER_LENGTH
T} |T{
Maximum number of bytes necessary to store data from this column.
T} T{ DECIMAL_DIGITS
T} |T{
The scale of the column, or NULL where scale is not applicable.
T} T{ NUM_PREC_RADIX
T} |T{
An integer value of either 10 (representing an exact numeric data type), 2 (representing an approximate numeric data type), or NULL (rep-
resenting a data type for which radix is not applicable).
T} T{ PSEUDO_COLUMN
T} |T{ Always returns 1.
T}
SEE ALSO
db2_column_privileges(3), db2_columns(3), db2_foreign_keys(3), db2_primary_keys(3), db2_procedure_columns(3), db2_procedures(3), db2_sta-
tistics(3), db2_table_privileges(3), db2_tables(3).
PHP Documentation Group DB2_SPECIAL_COLUMNS(3)