From c74cb49c50ee9609e51df72164337e72f72271f3 Mon Sep 17 00:00:00 2001
From: Lukas Eder <lukas.eder@gmail.com>
Date: Tue, 15 Jun 2021 13:31:52 +0200
Subject: [PATCH] [jOOQ/jOOQ#12013] Support parsing HSQLDB post-fix IF EXISTS
 in DROP statements

---
 .../main/java/org/jooq/impl/ParserImpl.java   | 21 ++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java b/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
index 72e0509390..55d57b8bf1 100644
--- a/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
+++ b/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
@@ -3598,8 +3598,9 @@ final class DefaultParseContext extends AbstractScope implements ParseContext {
     }
 
     private final DDLQuery parseDropExtension() {
-        parseKeywordIf("IF EXISTS");
+        boolean ifExists = parseKeywordIf("IF EXISTS");
         parseIdentifiers();
+        ifExists = ifExists || parseKeywordIf("IF EXISTS");
         if (!parseKeywordIf("CASCADE"))
             parseKeywordIf("RESTRICT");
         return IGNORE;
@@ -3639,6 +3640,7 @@ final class DefaultParseContext extends AbstractScope implements ParseContext {
     private final DDLQuery parseDropView() {
         boolean ifExists = parseKeywordIf("IF EXISTS");
         Table<?> tableName = parseTableName();
+        ifExists = ifExists || parseKeywordIf("IF EXISTS");
 
         DropViewFinalStep s1;
 
@@ -3828,6 +3830,7 @@ final class DefaultParseContext extends AbstractScope implements ParseContext {
     private final DDLQuery parseDropSequence() {
         boolean ifExists = parseKeywordIf("IF EXISTS");
         Sequence<?> sequenceName = parseSequenceName();
+        ifExists = ifExists || parseKeywordIf("IF EXISTS");
         parseKeywordIf("RESTRICT");
 
         return ifExists
@@ -4985,6 +4988,7 @@ final class DefaultParseContext extends AbstractScope implements ParseContext {
     private final DDLQuery parseDropTable(boolean temporary) {
         boolean ifExists = parseKeywordIf("IF EXISTS");
         Table<?> tableName = parseTableName();
+        ifExists = ifExists || parseKeywordIf("IF EXISTS");
         boolean cascade = parseKeywordIf("CASCADE");
         boolean restrict = !cascade && parseKeywordIf("RESTRICT");
 
@@ -5325,6 +5329,16 @@ final class DefaultParseContext extends AbstractScope implements ParseContext {
 
 
 
+
+
+
+
+
+
+
+
+
+
 
 
 
@@ -5339,6 +5353,7 @@ final class DefaultParseContext extends AbstractScope implements ParseContext {
     private final DDLQuery parseDropType() {
         boolean ifExists = parseKeywordIf("IF EXISTS");
         List<Name> typeNames = parseIdentifiers();
+        ifExists = ifExists || parseKeywordIf("IF EXISTS");
         boolean cascade = parseKeywordIf("CASCADE");
         boolean restrict = !cascade && parseKeywordIf("RESTRICT");
 
@@ -5463,6 +5478,7 @@ final class DefaultParseContext extends AbstractScope implements ParseContext {
     private final DDLQuery parseDropDomain() {
         boolean ifExists = parseKeywordIf("IF EXISTS");
         Domain<?> domainName = parseDomainName();
+        ifExists = ifExists || parseKeywordIf("IF EXISTS");
         boolean cascade = parseKeywordIf("CASCADE");
         boolean restrict = !cascade && parseKeywordIf("RESTRICT");
 
@@ -5530,6 +5546,7 @@ final class DefaultParseContext extends AbstractScope implements ParseContext {
     private final DDLQuery parseDropDatabase() {
         boolean ifExists = parseKeywordIf("IF EXISTS");
         Catalog catalogName = parseCatalogName();
+        ifExists = ifExists || parseKeywordIf("IF EXISTS");
 
         return ifExists
             ? dsl.dropDatabaseIfExists(catalogName)
@@ -5571,6 +5588,7 @@ final class DefaultParseContext extends AbstractScope implements ParseContext {
     private final DDLQuery parseDropSchema() {
         boolean ifExists = parseKeywordIf("IF EXISTS");
         Schema schemaName = parseSchemaName();
+        ifExists = ifExists || parseKeywordIf("IF EXISTS");
         boolean cascade = parseKeywordIf("CASCADE");
         boolean restrict = !cascade && parseKeywordIf("RESTRICT");
 
@@ -5670,6 +5688,7 @@ final class DefaultParseContext extends AbstractScope implements ParseContext {
     private final DDLQuery parseDropIndex() {
         boolean ifExists = parseKeywordIf("IF EXISTS");
         Name indexName = parseIndexName();
+        ifExists = ifExists || parseKeywordIf("IF EXISTS");
         boolean on = parseKeywordIf("ON");
         Table<?> onTable = on ? parseTableName() : null;