ALTER TABLE CLIENTE ADD IDZERASALDCRED VARCHAR2(1) DEFAULT 'N' NOT NULL
  CONSTRAINT CKC_IDZERASALDCRED_CLIENTE CHECK (IDZERASALDCRED IN ('S','N'))
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ALTER TABLE CLIENTE ADD IDPERIZERASALD VARCHAR2(1) NULL
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ALTER TABLE CLIENTE ADD NRDIAEXECZERA VARCHAR2(2) NULL 
/
ALTER TABLE CLIENTE ADD HRZERASALDCRED VARCHAR2(4) NULL
/
ALTER TABLE CLIENTE ADD IDTPZERASALDCRED VARCHAR2(4) 
  CONSTRAINT CKC_IDTPZERASALDCRED_CLIENTE CHECK (IDTPZERASALDCRED IN ('P','N','T'))
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ALTER TABLE PARAMGERAL ADD DSDIRARQZERASALD VARCHAR2(255) NULL
/