Existing DB2 column reported as not being a column of the table
https://stackoverflow.com/questions/11104267
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In a Moodle 2 install running on DB2, deleting a user is unsuccessful, returning an error reading from database:
Debug info: [IBM][CLI Driver][DB2/LINUXX8664] SQL0206N "USERIDFROM" is not valid in the context where it is used. SQLSTATE=42703 SQLCODE=-206 SELECT * FROM mdl_message WHERE useridfrom = ? ORDER BY timecreated
[array ( 0 => '28521', )]
The error description for SQL0206N is clear, but useridfrom is a column of mdl_message:
$ db2 describe table mdl_message
Data type Column
Column name schema Data type name Length Scale Nulls
------------------------- --------- ------------------- ---------- ----- ------
ID SYSIBM BIGINT 8 0 No
USERIDFROM SYSIBM BIGINT 8 0 No
USERIDTO SYSIBM BIGINT 8 0 No
SUBJECT SYSIBM VARCHAR 200 0 Yes
FULLMESSAGE SYSIBM VARCHAR 200 0 Yes
FULLMESSAGEFORMAT SYSIBM SMALLINT 2 0 Yes
FULLMESSAGEHTML SYSIBM VARCHAR 100 0 Yes
SMALLMESSAGE SYSIBM VARCHAR 200 0 Yes
NOTIFICATION SYSIBM SMALLINT 2 0 Yes
CONTEXTURL SYSIBM VARCHAR 200 0 Yes
CONTEXTURLNAME SYSIBM VARCHAR 200 0 Yes
TIMECREATED SYSIBM BIGINT 8 0 No
12 record(s) selected.
What else could cause this error?
Solution
It's possible that the column name somehow got a space in it. You can use this query to find out if there's any trailing blank space:
db2 "select '<' || name || '>' from sysibm.syscolumns where tbname = 'MDL_MESSAGE'"
OTHER TIPS
Are you sure you are connecting as the same user from command line and CLI. There might be a case where in the same table is present in different schema and you are seeing description of different table but accessing the other one.
