ERROR syntax error at or near NOT LINE 2 APPROVAL_ITEMID VARCHAR 50 COLLATE NOT NULL COMMENT 报错

The syntax error is caused by the use of the keyword "COLLATE" without specifying a collation sequence. The correct syntax for defining a column with a collation sequence is:

APPROVAL_ITEMID VARCHAR(50) NOT NULL COLLATE <collation_sequence> COMMENT ''

Replace "<collation_sequence>" with the desired collation sequence for the column and "" with the desired comment for the column.