ALTER TABLE marc_tag_structure
ADD COLUMN ind2_defaultvalue VARCHAR(1) NOT NULL DEFAULT '' AFTER authorized_value,
ADD COLUMN ind2_defaultvalue VARCHAR(1) NOT NULL DEFAULT '' AFTER authorised_value,
ADD COLUMN ind1_defaultvalue VARCHAR(1) NOT NULL DEFAULT '' AFTER authorized_value;
ADD COLUMN ind1_defaultvalue VARCHAR(1) NOT NULL DEFAULT '' AFTER authorised_value;
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