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Full Discussion: Optimizing query
Special Forums UNIX and Linux Applications Optimizing query Post 302130173 by jim mcnamara on Friday 3rd of August 2007 11:34:53 AM
Old 08-03-2007
rowid is not an indexed column - it is a "pseudocolumn'. the in () subselect will read thru the entire select statement's result set each time. When I get back in a while I'll write something that is faster. You may need to add an index.
 

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DB2_FIELD_DISPLAY_SIZE(3)						 1						 DB2_FIELD_DISPLAY_SIZE(3)

db2_field_display_size - Returns the maximum number of bytes required to display a column

SYNOPSIS
int db2_field_display_size (resource $stmt, mixed $column) DESCRIPTION
Returns the maximum number of bytes required to display a column in a result set. PARAMETERS
o $stmt - Specifies a statement resource containing a result set. o $column - Specifies the column in the result set. This can either be an integer representing the 0-indexed position of the column, or a string containing the name of the column. RETURN VALUES
Returns an integer value with the maximum number of bytes required to display the specified column. If the column does not exist in the result set, db2_field_display_size(3) returns FALSE. SEE ALSO
db2_field_name(3), db2_field_num(3), db2_field_precision(3), db2_field_scale(3), db2_field_type(3), db2_field_width(3). PHP Documentation Group DB2_FIELD_DISPLAY_SIZE(3)
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